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Model TB750G Right Angle Scattered Light Turbidimeter

1. CONVERTER a a 0 JL 3 4 3 t L 3 Item Part No Qty Description 1 1 Converter K9657AA for TB750G NTU ST N1 K9657AB for TB750G NTU ST N2 2 L9811FV 1 Cable Gland 3 1 Mounting Hardware K9657WA Option Code in case of R K9171SS Option Code in case of U K9658TA Option Code in case of PM 4 1 Cable K9657EA 1 m for TB750G NTU 1 K9657EB 2 m for TB750G NTU 2 K9657EC 3 m for TB750G NTU 3 All Rights Reserved Copyright O 2005 Yokogawa Electric Corporation CMPL 12E01A06 01E YOKOGAWA Subject to change without notice 2nd Edition Mar 2006 YK Yokogawa Electric Corporation DETECTOR CMPL 12E01A06 01E Item Wh ak Part No K9657NA K9657NB K9657PW K9657RJ K9657NS K9657NW Qty 1 4 s ED I 1 U Hu Description Detector Option Code in case of US Lamp Assembly Desiccant Gasket Cover 2nd Edition Mar 2006 YK K9411UA ZERO TURBIDITY FILTER ASSEMBLY 1 micron filter K9726EF ZERO TURBIDITY FILTER ASSEMBLY 0 2 micron filter Item Part No
2. SUM Communication status except 0 Example 3 When output range 1 is switched to range A Request command receive data CWO0002A CR Return data transmit data AW00001000EB n e Transmission distance RS 422 1000 max RS 232C 10 m max Cable RS 422 Twisted pair cable with shield AWG 20 to 16 RS 232C Cable with shield Contact output Type Relay contact output Number of contacts 3 Action On Off Function 1 S2 High low alarm or in maintenance selectable FAIL Failure Rating 250 VAC 2A 125 VA max resistance load or 30 VDC 3A 60 W max resistance load Form C NC NO COM 3 terminals IM 12E01A06 01E 2 SPECIFICATIONS gt Contact status Contact S1 S2 Contact FAIL Status LED NO NC LED In action ON Closed Open ON Open Closed Not in action OFF Open Closed OFF Closed Open Power OFF OFF Open Closed OFF Open Closed Contact input Type Voltage free contact input Number of contacts 2 Function Remote range switching On resistance Input resistance 2000 or less Off resistance Input resistance 100 kO or greater Contact status Remote 2 range switching Contac When Range Switching is Selected Range IN1 COM Open Closed Remote 3 range switching Contact When Range Switching is Selected
3. 7 22 7 10 1 Checking the Operation of the Analog Output 7 22 7 10 2 Checking the Operation of the Contact Output 7 23 7 10 3 Checking the Operation of the Contact Input 7 24 7 11 Replacing the Zero Turbidity Filter Element eese 7 25 7 12 Fuse Replacement eren tena enun ERRARE XR CENE ARR 7 26 7 13 Xen 7 27 7 14 Cleaning the Front Covers of the Detector and the Converter 7 28 7 15 LLLI cm 7 28 8 TROUBLESHOOTING ssssssesssssessesessssessesesssesscssesessessssussessessesevseenes 8 1 8 1 When a Failure Occurs and the FAIL Lamp Turns On 8 1 8 2 When Failure Occurs but the FAIL Lamp Does Not Turn On 8 5 8 3 Error Code List 5 rete entretien eateries 8 6 Worksheet for Operation Parameter Setting App 1 IM 12E01A06 01E 4 lt CONTENTS gt Customer Maintenance Parts List Revision Information i IM 12E01A06 01E 1 OVERVIEW 1 1 1 OVERVIEW There a
4. 1 5 2 SPECIFICATIONS 2 1 2 1 Standard 2 1 2 2 Ch racteristiCs MAR RD ERR ER EAER AR RS ER aAA ren Snabatusteinss 2 6 2 3 Optional Specifications erinnern rk nex kanapka kankan NR ERR RAS 2 6 2 4 Model and Codes erret nin 2 7 2 4 1 TB750G Right Angle Scattered Light Turbidimeter 2 7 24 2 Zero Turbidity Filter Assembly 4 4400 1 2 7 2 4 3 IACCeSSOLFIOS 5 dose dte eta iei Can Renan 2 8 2 44 Consumibles naan nei eere 2 8 2 4 5 Head Tank nni rene e a eas 2 8 2 5 External DIMENS ON S eaaa ANAA EAA E AARAA NAERAA ENESE 2 9 2 5 1 TB750G Right Angle Scattered Light Turbidimeter 2 9 2 5 2 Zero Turbidity Filter Assembly sene 2 10 2 6 aleae 2 11 2 7 Connection Diagram sssrinin eR SAEPE MER ean ER ERR RE RR AR ARERKRRREERR 2 11 3 INSTALLATION PIPING AND 3 1 3 1 circule 3 1 3 1 1 Unpack Gh et e
5. 1 When hold function is set to 1 Enabled in CODE 35 2 When contact output function is set to 1 Alarm in CODE 40 or 41 and alarm setting function is set to 1 Enabled in CODE 51 3 If an error occurs during self adjustment in calibration mode the display will move to CAL END E101 Flash memory failure E102 EEPROM failure E103 RAM failure and E104 AD converter failure Check Possible Cause and Action Turn power off and then back on If error occurs again failure of memory or other function may have occurred gt Request repair service E201 Input voltage failure Check Possible Cause and Action Check if detection element input voltage is outside the Failure of detection element preamplifier amplifier range of 0 15 to 1 2 V AD converter etc may have occurred Check input voltage IN1 IN2 in CODE 02 gt Request repair service E202 Detection element failure Possible Cause and Action Failure of detection element preamplifier amplifier AD converter etc may have occurred gt Request repair service E203 Lamp life expired Check Possible Cause and Action Lamp life has almost expired disconnected gt Replacement is recommended Remove front cover of detector and measure lamp If lamp voltage is outside the range board failure may voltage at terminal The voltage must be 3 5 0
6. Table 3 5 Contact Rating AC DC Contact maximum permissible voltage 250V 30V Contact maximum permissible current 2A 3A Contact maximum permissible power resistance load 125VA 60W Table 3 6 Contact Operation When Fixed When Range Switching is Selected Contact Range is Park RangeA RangeB RangeC RANGE A COM Open Closed Open Open RANGE B COM Open Open Closed Open RANGE C COM Open Open Open Closed Cable Required Use a 2 conductor cable with a finished outside diameter of 6 to 12 mm Procedure 1 Terminating the cable Strip off approximately 40 mm of the insulation from the end of the cable Terminate the ends of each conductor with crimp terminals corresponding to the M3 screws 2 Connecting the cable to the converter Connect the conductors of the cable to the specified terminals on the converter Range contact output RANGE Terminals A B C and COM To run the cable through the cable gland remove the assembled parts from the cable gland body at cable inlet port F and then slide these parts over the cable in order 3 Fixing the cable Adjust the cable length housed in the converter and fix the cable by mounting the parts to the cable gland body A CAUTION Before opening the front cover of the converter or the detector turn off power to the TB750G turbidimeter Make sure that the turbidimeter is not powered before wiring work Do not touch terminals while the turbidimeter
7. Range A Range B Range C IN1 COM Open Closed Open IN2 COM Open Open Closed Range contact output Type Relay contact output Number of contacts 3 Action On Off Rating 250 V AC 2A 125 VA max resistance load or 30 V DC 3A 60 W max resistance load Contact status Contact When Fixed Range When Range Switching is Selected is Selected Range A Range B Range C RANGE A COM Open Closed Open Open RANGE B COM Open Open Closed Open RANGE C COM Open Open Open Closed Calibration Zero calibration Zero water filtered water with zero turbidity Span calibration Sensitivity calibration using check block or turbidity standard solutions 2 point calibration Turbidity standard solutions Grab sample calibration Zero point and sensitivity correction using grab sample Self diagnostics Light source failure input element failure calibration failure AD circuit failure memory failure etc Installation location Indoor Weather protection is required for outdoor installation Ambient temperature 5 to 50 C Sample and tap water may need protection against freezing Ambient humidity 5 to 95 RH non condensing Storage temperature 30 to 70 C Sample water conditions Flow rate 0 05 to 20 l min Temperature 0 to 50 C Pressure 500 kPa max Mounting Pipe wall rack or panel mounting Piping connection detector Sample water inlet 1 2 or 1 2NPT optional IM 12E01A06 01E 2 6 2 SPECIFICATIONS gt Sample water ou
8. dub RNGX Y witchable output range state selection display X 1 2 Analog output 1 2 NO Y A B C Range A B C v mode 1 Skipped if analog output range switching selection RNGPR is set to 0 Fixed in CODE 30 at service level F6 3E ai Figure 6 3 DISPLAY Mode Flow Chart 3 SETPOINTS Mode SETP In this mode a preset high low alarm values can be changed This function is available only when it is set to Enabled in CODE 51 at the service level If the function is set to Disabled this mode will be skipped Operation in this mode is the same as that in the alarm setting mode at the setting level See Subsection 6 2 1 on page 6 7 Note The pointer is not shown on the display when this mode is in process IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 5 4 HOLD Mode HOLD In this mode whether the analog output is held or not in measurement mode can be selected This function is available when the hold function is set to 1 Enabled in SET HOLD mode at the setting level If the function is set to 0 Disabled this mode will be skipped YES Flashing NO YES Hold disabled in Hold enabled in measurement mode measurement mode HOLD status indicator turns on mode F6 4E ai Figure 6 4 HOLD Mode Flow Chart If the hold function has been set to 1 Enabled in SET HOLD mode at the setting level the instrument automatically goes into this HOLD mode when
9. gt 4 7 5 Measure the drainage volume at the sample water outlet of the detector using a beaker or relevant measure The rate of flow to the detector must be in the range of 0 05 to 20 l min System Using a Simple Head Tank See Piping Diagram in Figure 3 22 1 2 3 With the drain valve after the detector open completely open the valve at the inlet of the simple head tank gradually and completely By gradually close the valve at the sample water out of the detector adjust the flow rate so the water sample is thoroughly drained from the drain of the simple head tank Close the sample water supply valve while checking the turbidity reading until the influence of air bubbles disappears Check that the water sample is overflowing from the drain of the simple head tank System Using a Pressurized Head Tank See Piping Diagram in Figure 3 24 1 S Completely open the bypass valve at the top of the head tank the sample water supply valve and the needle valve at the sample water outlet of the detector Open the sample water valve to supply a water sample to the head tank Gradually close the bypass valve at the top of the head tank until the rate of flow from the sample water outlet of the detector is in the range of 0 05 to 10 I min The rate of drainage from the bypass valve should be secured to the extent that air bubbles are removed Pressure changes in the line between the sampling point and the det
10. pag F3 10E ai IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 7 3 Panel Mounting In the mounting position of the TB750G converter make a panel cutout as shown in Figure 3 3 The thickness of a panel should not exceed 15 mm 138 Unit mm eo e H 185 F3 11E ai Figure 3 3 Cutout for Converter s Panel Mounting As with 2 Wall Mounting the TB750G detector is mounted on a panel with four M5 bolts supplied by customer Drill the holes in the panel as shown in Figure 3 2 IM 12E01A06 01E 3 8 3 INSTALLATION PIPING AND WIRING 3 1 5 Mounting the Converter and Detector 1 Pipe Mounting Figures 3 4 and 3 5 show the pipe mounting brackets and the mounting procedures Converter Bracket Pipe Bracket Nuts 2 U bolt Washers 2 Stanchion pipe 50A F3 12E ai Figure 3 4 Pipe Mounting Converter Stanchion pipe 50A E U bolt 2 Nuts 4 Pipe Bracket 2 F3 13E ai Figure 3 5 Pipe Mounting Detector IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 9 2 Wall Mounting Figures 3 6 and 3 7 show the wall mounting procedures Converter Pd Mounting Holes 3 8 Bolts 3 supplied by customer Should be long enough to be secured through mounting hole Bracket F3 14E ai Figure 3 6 Wall Mounting Converter Wall Detector M5 Bolts 4 supplie
11. nication 3 4 Grounding 7 RS 422 1000 or less Dig oL ON TUS oG Contact output S2 Power supply cable S Ultrasonic transducer 7 iconnecting cable i maximum length 15m f customer wiring Contact output FAIL Contact input Range contact output Analog output 1 4 20mA DC Analog output 2 4 20mA DC or 0 20mA DC 3 Grounding 1000 or less Grounding 1000 or less Note Dotted wiring is external wiring Use cable with 6 to 12 mm OD for wiring 1 Power terminal G on detector detector case and converter case must be grounded ground resistance 1000 or less 2 External grounding terminal of ultrasonic oscillator must be grounded ground resistance 1000 or less 3 Use 2 conductor shielded cable for analog output wiring and serial communication wiring 4 The wiring configuration is described below in case that RS 232C serial communication is selected Serial com i munication eRXD ns 222c RS 232C 086 Spe i 5 When option code US isspecified TUS400G should be purchased separately When TUS400G is used in system the power supply to TB750G should be the same as the supply voltage specified in the MS Code of TUS400G 6 When TB750G US TUS400G NN RC or TUS400G NN KC is specified refer to IM 19C1B4 01E for wir
12. 6 Thoroughly wash the inside of the measurement cell using a sponge or soft cloth soaked in mild detergent Next carefully wash the 3 glass windows using a brush or a sponge or soft cloth with cream cleanser Rinse the inside with zero water or tap water as needed Glass Windows 3 F7 3E ai Figure 7 3 Inside the Detector Measurement Cell 7 Replace the top cover on the top of the detector and tighten the 6 setscrews 8 Supply zero water to the detector When the measurement cell is filled with the water drain it Repeat this at least three times to thoroughly rinse off detergent in the measurement cell See step 3 for valve operation 9 Replace the rubber cover on the detector top cover 10 Putting the converter in measurement mode 1 Press the MODE key on the converter Check that the message display shows CALB 2 Press the NO key repeatedly until HOLD appears on the message display Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the NO key to exit from the maintenance state analog hold is held and return to measurement mode The HOLD indicator turns off 11 Washing is now complete IM 12E01A06 01E 7 MAINTENANCE 7 5 7 4 Washing the Head Tank This section describes the procedure for washing the head tank 1 Putting the converter in the maintenance state 1 Press the MODE key on the converter Check the
13. Serial Communication Connector for Connecting Cable Terminals Front Cover Converter Detector Cable Front Cover Serial Communication Terminals Terminal Cover Contact Output Range Contact Output Terminals Terminal G For Converter Detector Connecting Cable 7 LJ Analog Output Contact Input Terminals Analog Output Contact Input Terminals F3 18E ai Figure 3 9 Internal View of the Converter IM 12E01A06 01E 3 12 3 INSTALLATION PIPING AND WIRING Terminals Power to Lamp Power Supply Terminals Terminal G For Converter Detector Connecting Cable Power Supply Terminals for Connector for Converter Detector Cable Ultrasonic Oscillator F3 19E ai Figure 3 10 Internal View of the Detector Procedure for Wiring Procedure for Wiring to the Converter Before wiring work make sure that the power supply is disconnected from the TB750G converter Remove the front cover by loosening the 4 setscrews holding the cover to the converter Remove the terminal cover and also remove the gr
14. 1 K9008ZD K9726EH 2 K9411UB 3 K9008ZE 4 K9411UD 2nd Edition Mar 2006 YK Description Filter Element 1 micron 0 2 micron Case Plate O Ring CMPL 12E01A06 01E Revision Information Title Model TB750G Right Angle Scattered Light Turbidimeter Manual No IM 12E01A06 01E Edition Date 3rd Mar 2015 p 2 4 p 2 6 p 2 7 p 2 8 p 2 11 S p 3 p 3 23 p 7 21 p 7 28 p 8 2 p 8 3 p 8 6 2nd Mar 2006 1st Aug 2005 Remark s Some revision of Section 2 1 Standard Specifications 3 Output range switching The unit of the number of the contact is eliminated Some revision of Section 2 1 Standard Specifications Finish of converter housing will be changed from polyester resin power coating to baked polyurethane resin coating Addition of RCM C Tick marking and KC marking Some revision of Section 2 4 Model and Codes Baked epoxy resin coating is also available optional code X1 Some revision of Consumables note added Some revision of 2 7 Connection Diagram Some revision of Section 3 1 3 Installation Dimensions Spell miss correction for Converter of Panel Mounting Option Code PM Some revision of 3 2 12 Wiring to the Ultrasonic Transducer When Option Code US is specified Some revision of Section 7 9 Checking and Replacing Desiccants Some revision of Spare Parts note added Some revision
15. 6 PROCEDURES FOR SETTING PARAMETERS 6 9 3 SET HOLD Mode HOLD The following can be set with respect to the output signal hold Whether the hold function is enabled H ON or disabled H OFF Ifthe function is set to enabled whether the output signal is held at the last measured value H LST or a fixed value H FIX e Ifa fixed value is selected a current value as a fixed value When the hold function is set to enabled the output signal is held during maintenance gt HOLD YES NO YES YES H LST H FIX YES YES v XX X gt H mA1 A ENT be ENT XX X gt H mA2 ENT 1 The same display as the one in H mA2 in CODE 35 at service level F6 8E ai Figure 6 8 SET HOLD Mode Flow Chart IM 12E01A06 01E 6 10 6 PROCEDURES FOR SETTING PARAMETERS Setting Procedures N IM 12E01A06 01E Selecting Enabled H ON or Disabled H OFF for the Hold Function Factory Default H ON When the display enters SET HOLD mode H OFF or H ON will appear on the message display If the desired option is shown press the YES key If not press the NO key to toggle to the other option then press the YES key When Enabled H ON is selected here the hold function starts at this point Also the HOLD mode at the operation level is activated the display automatically goes into the mode when for example it ret
16. ENT X X X X X X E301 E302 E303 E304 E305 E306 X A E307 error detection function enabled disabled selection display 307 X 0 Disabled or 1 Enabled ENT X X X X X X gt 311 6 4 Although E311 to E317 will appear in the procedure ENT they are reserved code and invalid X 317 ENT F6 34E ai Figure 6 34 E3xx Error Level Selection Mode Flow Chart IM 12E01A06 01E 6 26 6 PROCEDURES FOR SETTING PARAMETERS CODE 71 Analog Output Test Mode A test current value is output to analog outputs 1 and 2 Refer to Section 7 9 1 YES SERV 71 x CODE ENT Analog output 1 Analog output 2 NO nir pro YES YES 02 4 00 0 AO1 T 2 V ENT 04 0 01 0 AO1 T 2 ENT 08 0 04 0 AO1 T A02 T ENT ENT 12 0 08 0 AO1 T 2 ENT 16 0 12 0 AO1 T A02 T ENT ENT 20 0 16 0 AO1 T 2 ENT 21 6 20 0 AO1 T A02 T ENT ENT A02 T NO YES ENT NO YES F6 35E ai Figure 6 35 Analog Output Test Mode Flow Chart IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 27 CODE 72 Contact Output Test Mode In this mode the operation of each contact output can be checked Refer to Section 7 9 2 On test display 1 the operation of contact outputs 51 52 FAIL and range contact outputs ranges A B C can be checked During the contact output S1 S2 FAIL check
17. and return to measurement mode The HOLD indicator turns off Pipe cleaning is now complete IM 12E01A06 01E 7 28 7 MAINTENANCE 7 14 Cleaning the Front Covers of the Detector and the Converter The front covers of the detector and the converter are made of polycarbonate resin The transparent window on the converter front cover is also made of weatherproof polycarbonate resin Adhesion of oil or organic solvents may cause cloudiness or cracking Dirt on the covers or window should be removed using a tissue paper or soft cloth soaked in water For stubborn stains use a tissue paper or Soft cloth soaked in mild detergent to remove them Then wipe them off using a tissue paper or soft cloth soaked in water Do not use organic solvents ethanol acetone etc for cleaning the front covers of the converter including the window and the detector Organic solvents may cause cloudiness or cracking 7 15 Spare Parts Spare parts are supplied with the instrument Table 7 2 shows recommended replacement intervals The intervals are determined in light of preventive maintenance so accidental failures are excluded from considerations The recommended intervals are subject to change because of field performances and others Table 7 2 Spare Part List litm Part Number Recommended Interval 1 Lamp assembly K9657PW Yearly 2 Filter 1 um K9008ZD Yearly Filter 0 2 um K9726EH Yearly Fuse 3 15 1 piece A1113EF Y
18. taking care not to allow air bubbles to enter the cell When the measurement cell is filled to approximately 90 with the calibration standard solution open the drain valve to drain the calibration solution 4 Continue to pour the calibration standard solution to rinse the measurement cell 7 MAINTENANCE 7 15 6 Supplying the formazin calibration standard solution 1 Close the drain valve after the detector Slowly pour the formazin calibration standard solution into the measurement cell using a funnel or relevant equipment taking care not to allow air bubbles to enter the cell Care should be taken that the end of the funnel does not contact with the solution level This is to prevent the contamination of the standard solution with dirt on the funnel F7 10E ai Figure 7 10 How to Pour the Standard Solution 2 The measurement cell should be filled to 9096 with the calibration standard solution Replace the top cover fix it securely with the 6 setscrews and attach the rubber cover 7 Performing a span calibration 1 Wait 3 to 5 minutes until the reading has stabilized Check that STD CAL is shown on the message display Press the YES key to enter the calibration using the standards 2 The message display should show ZERO Press the NO key The message display should show SPAN Press the YES key to enter the span calibration 3 The message display should show VALUE 4 Set the decimal point position in the d
19. which requires time consuming procedures As a convenient way of span calibration a check block supplied can be used For details of calibration using turbidity standards see Subsection 7 6 3 Care must be exercised not to lose the check block supplied with the turbidimeter The check block has a turbidity value unique to the turbidimeter of interest Therefore the same check block cannot be purchased again If it is lost contact Yokogawa 1 Putting the converter in calibration mode maintenance state 1 Press the MODE key on the converter The message display should show CALIB 2 Press the YES key to enter calibration mode 2 Draining the water sample 1 Close the sample water supply valve 2 Open the drain valve after the detector to drain the water sample 3 Washing the measurement cell 1 Open the zero water supply valve to supply zero water to the detector 2 Close the drain valve after the detector When the measurement cell is filled with the water open the drain valve to drain 3 Repeat steps 1 and 2 at least three times to wash the inside of the measurement cell 4 Installing the check block Before installing check that the check block is clean If not wash off the dirt following the cleaning procedure How to Clean the Check Block 1 Make sure that the zero water supply valve is closed and the drain valve is open 2 Remove the rubber cover from the top of the detector 3 Remove the retain
20. 01E 7 26 7 MAINTENANCE 7 12 Fuse Replacement For preventive maintenance it is recommended that the fuse be replaced at an interval of one year 1 Remove power from the TB750G turbidimeter 2 Remove the front cover of the detector by loosening the 4 setscrews 3 Take the fuse holder out See Figure 7 13 4 Replace the fuse with a new one b Replace the front cover to the detector 6 Turn on the power of the TB750G turbidimeter 7 Allow the turbidimeter to warm up for at least 30 minutes before starting measurement 8 Fuse replacement is now complete Fuse 3 15A Power Terminal Power Terminal for Ultrasonic Oscillator F7 13E ai Figure 7 13 Fuse Replacement CAUTION Before opening the front cover of the detector turn off power to the TB750G turbidimeter Make sure that the turbidimeter is not powered before work Do not touch terminals while the turbidimeter is being powered IM 12E01A06 01E 7 MAINTENANCE 7 27 7 13 Pipe Cleaning Remove the pipes between the detector and the head tank and clean them 1 Putting the converter in the maintenance state 1 Press the MODE key on the converter repeatedly Check the CALIB is shown on the message display 2 Press the NO key The message display should show HOLD Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the
21. 7 19 7 8 Grab Sample Calibration Even after the calibration using turbidity standards the turbidity measured by the instrument may differ from the one measured manually in a lab This is due to the difference of properties of the water sample and of turbidity measurement methods A grab sample calibration is for correcting these differences With the water sample running adjust the instrument so that it reads the same value as the one measured in a lab This calibration should be performed when theturbidity measured by the instrument has differed from the one measured manually in a lab even after the calibration using turbidity standards the property of the water sample has changed with the seasons or because of other reasons A grab sample calibration comprises a zero shift calibration to correct the zero point and a span calibration to correct the sensitivity and is performed in SMP CAL mode at the operation level Procedure 1 Take an aliquot of the water sample and manually determine its turbidity in the lab 2 Putting the converter in the maintenance state 1 Press the MODE key on the converter The message display should show CALIB 2 Press the YES key to enter calibration mode 3 Draining the water sample 1 Close the sample water supply valve 2 Open the drain valve after the detector to drain the water sample 4 Washing the measurement cell 1 Open the zero water supply valve to supply zero water to th
22. Adelay time 2 Ahysteresis Delay Time and Hysteresis for High Low Alarm Contact Output The alarm contact output is activated when a specified delay time elapses after the turbidity value has crossed the high low alarm setpoint not immediately after the turbidity value has crossed the setpoint The output will be deactivated when the delay time elapses after the turbidity value has crossed the setpoint minus plus a specified hysteresis If the turbidity value goes above below the setpoint minus plus the hysteresis during the delay time the delay time will be reset The delay time and hysteresis are available when a high low alarm function is assigned to either of contact outputs S1 and S2 The hysteresis is defined as a percentage of the high alarm setpoint YES CODE ENT XXX gt Delay time D TIME A Setting range 000 to 199 s ENT XXX gt Hysteresis HYST A Setting range 000 to 100 ENT F6 26E ai Figure 6 26 Delay Time Hysteresis Setting Mode Flow Chart CODE 50 Auto Return Function Selection Mode Whether the auto return function is enabled or disabled can be selected The auto return function is that the instrument will automatically return to measurement mode if no keys are operated for 10 minutes in each level with exception of calibration mode YES ENT A Auto return function enabled or disabled X O Disabled or 1 Enabled ENT F6 27E ai Figure 6 27 Auto Retur
23. After washing the head tank open the sample water supply valve to supply the water sample to the detector b Putting the converter in measurement mode 1 Press the MODE key on the converter Check that the message display shows CALB 2 Press the NO key repeatedly until HOLD appears on the message display Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the NO key to exit from the maintenance state analog hold is held and return to measurement mode The HOLD indicator turns off 6 Washing is now complete IM 12E01A06 01E 7 6 lt 7 MAINTENANCE gt 7 5 Lamp Replacement A CAUTION Wait for some time to replace lamp assembly because lamp temperature is high just after lamp power was turned off Although the lamp has a normal service life of more than one year it is recommended that the lamp be replaced at an interval of one year in terms of preventive maintenance Some lamps may fail within one year The following describes how to replace the lamp 1 Remove power from the TB750G turbidimeter Remove the cover of the light source unit on the left side of the detector by loosening the 4 setscrews Disconnect the terminals for lamp from the terminal block Remove the lamp assembly by loosening the 2 setscrews Replace the lamp assembly with a new one Mount the new lamp assembly with the 2 setscrews Connect the terminals fo
24. Analog output 1 in CODE 30 at service level 2 Skipped if analog output range switching selection RNGPR is set to 2 Analog output 2 in CODE 30 at service level 3 Displayed only if analog output range switching selection RNGPR is set to 1 Analog output 1 or 2 Analog output 2 and range switching function selection RSET is set to 0 Manual in CODE 30 at service level 4 Displayed only if analog output range switching selection RNGPR is set to 1 Analog output 1 in CODE 30 at service level 5 Displayed only if analog output range switching selection RNGPR is set to 2 Analog output 2 in CODE 30 at service level 6 Zero and span points should be set together Only after span point has been entered both zero and span points are accepted Cancellation by pressing MODE key during the procedure will not change either of points F6 7E ai Figure 6 7 RANGE Mode Flow Chart The setting range and factory default of each item that can be set in this mode are shown below Zero point of output 1 ZERO Setting range 0000 00 to 2000 00 NTU Factory default 0000 00 NTU Span point of output 1 SPAN Setting range 0000 00 to 2000 00 NTU Factory default 0100 00 NTU Zero point of output 2 ZERO Setting range 0000 00 to 2000 00 NTU Factory default 0000 00 NTU Span point of output 2 SPAN Setting range 0000 00 to 2000 00 NTU Factory default 1000 00 NTU IM 12E01A06 01E
25. B MECON Open Closed 3 Range Switching Contact When Range Switching is Selected Range A Range B Range C IN1 COM Open Closed Open IN2 COM Open Open Closed IN1 IN2 COM F3 23E ai Figure 3 14 Contact Input for Remote Range Switching Cable Required Use a 2 conductor cable with a finished outside diameter of 6 to 12 mm Procedure 1 Terminating the cable Strip off approximately 40 mm of the insulation from the end of the cable Terminate the ends of each conductor with crimp terminals corresponding to the M3 screw 2 Connecting the cable to the converter Connect the conductors of the cable to the specified terminals on the converter Contact Input INPUT X Terminals IN1 IN2 and COM To run the cable through the cable gland remove the assembled parts from the cable gland body at cable inlet port D and then slide these parts over the cable in order 3 Fixing the cable Adjust the cable length housed in the converter and fix the cable by mounting the parts to the cable gland body IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 2 5 Contact Output S1 S2 and FAIL Wiring This wiring is for releasing contact outputs S1 and S2 as the contacts for high low alarms and maintenance and for releasing contact output FAIL when an abnormality is detected The rating and operation of the contact output relays are provided in Tables 3 3 and 3 4 respective
26. Be sure to provide a switch double pole type compliant with IEC 60947 1 and IEC 60947 3 in the power line as close to the instrument as possible The on and O off symbols should be indicated near the switch if they are not indicated on the switch Upon power up the converter will go into measurement mode if the turbidimeter is set to factory defaults the data display will show turbidity values in NTU and the message display will show output current values If the converter detects a failure the FAIL indicator will turn on and an error code will appear on the message display The FAIL contact status lamp will turn on only when a level 1 error occurs If a failure occurs refer to Chapter 8 SETPOINTS RANGE SETPOINTS RANGE SET HOLD CAL WASH SERVICE SERVICE YES NO MODE CONTACTS YES NO MODE CONTACTS e ot em aD o A ENT Os A ENT Os Ora LP em F5 6E ai F5 7E ai Display in Normal Operation Display when a Failure Occurs Figure 5 6 Examples of Measurement Mode Displays IM 12E01A06 01E 5 6 5 CONVERTER OPERATION 5 2 3 Basic Key Operations Key operation can be done by touching keys over the front cover With the front cover attached operate keys to check that the instrument responds accordingly Note the following two points for mode switching Pressing the MODE key when in any mode other than mea
27. CALIB is shown on the message display 2 Press the NO key repeatedly The message display should show HOLD Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the YES key to put the converter in the maintenance state analog output signal is held The HOLD indicator turns on Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level steps 2 and 3 cannot be done If analog output should be held during maintenance select Enabled H ON The factory default is Enabled H ON 2 Close the sample water supply valve 3 Draining water from the head tank and washing it The following describes how to wash two optional head tanks provided by Yokogawa Pressurized head tank 1 Close the sample water valve 2 Loose and remove the drain plug attached to the side of the head tank to drain the water sample 3 Remove the cover on the top of the head tank Wash inside the tank using a sponge or Soft cloth soaked in mild detergent Pour tap water into the tank from above and rinse off thoroughly 4 Replace the drain plug and the top cover 5 Open the sample water valve to run the water sample into the head tank and wait until the tank is refilled Simple head tank With the sample water valve open open and close the drain valve under the head tank at least three times to rinse out the head tank 4
28. Mode Flow Chart Note This mode is only for displaying the values not user configurable IM 12E01A06 01E 6 12 6 PROCEDURES FOR SETTING PARAMETERS CODE 08 Spike Detection Parameter Setting Mode The following four parameters in relation to the spike detection function that detect and remove sudden fluctuations in turbidity readings due to air bubbles or others can be set 1 Selecting enabled disabled for the spike detection function 2 Setting a limit value 3 Setting a hold time 4 Setting a sampling time YES SERV DES 08 CODE 1 X A Spike detection function enabled or disabled SPIKE X O Disabled or 1 Enabled If X is 0 ENT is 1 gt Limit value LIMIT A Setting range 000 000 to 999 999 ENT XXX gt Hold time HLD T A Setting range 005 to 600 s ENT gt Sampling time SMP T A Setting range 001 to 600 s ENT 2 4 Returns to 5 display if spike detection function is working F6 11E ai Figure 6 11 Spike Detection Parameter Setting Mode Flow Chart When the Spike Detection Function is Needed Air bubbles or dust on the sample surface of the detector s measuring cell at which the light is scattered can cause fluctuation in turbidity readings generally a sudden rise in reading occurs The fluctuation is dependent on the size of air bubbles or dust and their behavior on the sample surface It is recommended that a he
29. NO key is pressed hold function is disabled F5 2E ai Figure 5 2 Display When MODE Key is Pressed in Mode Other Than Measurement Mode Auto Return to Measurement Mode If no key is operated for 10 minutes in any level the converter will automatically return to measurement mode except when the instrument is in calibration mode This auto return function does not work when it is set to 0 Disabled in CODE 50 auto return function selection mode at the service level IM 12E01A06 01E 5 3 5 CONVERTER OPERATION 5 1 3 Password 5 2 5 2 1 If a password is set in CODE 52 password setting mode at the service level each level cannot be accessed without entering the relevant password A password prompt appears when you attempt to access the operation level by pressing the MODE key in measurement mode the setting level by pressing the key in measurement mode or the service level by pressing the YES key when SERV appears on the message display 2 ed un MODE 1 I gt MEASURE CAL SPACES Tum a J F5 3E ai Figure 5 3 Example of Password Prompt Display Key Operation Procedures This section describes basic procedures for operating keys to demonstrate how to use the keys and how to check the instrument operation For key operations for checking or changing parameter settings see Chapter 6 Operation Panel Figure 5 4 shows the operatio
30. Self adjustment 6 or ENT V ENT 6 Measurement mode 1 During the time between YES key press on STD CAL display and YES or NO key press on CAL END display or on error code display or MODE key press to abort data display shows turbidity based on sensitivity correction factor 1 and zero correction factor B 0 Value not affected by SMP CAL Display by T1 SO SL 100 V A not by T2 K T1 B 2 Span calibration in STD CAL is performed using turbidity standards or check block that has been selected in CODE16 3 In zero calibration calibration value should be 0 000 and cannot be changed Only ENT key is accepted to confirm 4 In span calibration using check block calibration value cannot be changed Only ENT key is accepted to confirm 5 First determine the decimal point using gt key and then set value in the range of 0 000 to 20000 NTU 6 Pressing ENT key during self adjustment will abort the procedure and the turbidity when ENT key is pressed will be used for calibration factor calculation T Only YES key is accepted to confirm Note Calibration factor will be updated when the calibration procedure is completed without cancellation or errors If YES NO key is pressed on error code display the instrument goes to CALIB display Error E203 or E204 appears after the instrument once returns to measurement display F6 2E ai Figure 6 2 CAL Mode Flow Chart IM 1
31. SpanpointforangeB _ SPAN 0f0000QNTU Range C setting 000 ye i ee Zero pointforrangeC ZERO 000000NTU A SpanpointforanggC SPAN 100000 TU ME Automatic range switching point AUTOR 080 Default value ia a value at the time of initializing in CODE79 Initialization of service level This value differs from the value at the time of factory shipment IM 12E01A06 01E 2 Service Level 2 Worksheet for Operation Parameter Setting Code Setting Parameter Display Default Value CODESS3 Analog output 2 range selection See page 6 19 A Rangeselectonforouput2 mA2 0 1 0200m Fixed value forhold sd Hma2 220A Fixed value for hold during failure H mA2 220 CODES5 Hold during failure parameter setting See page 6 20 Hold function enabled or disabled Last measured value or FHOLD 1 Enabed AST FHFXFxed 7 Fixed value for output 1 FH FIX value Fixed value for output2 CTFHmA1 220mA 0 ee ee ee HmA2 220mA amp CODE37 Time constant setting See page 6 20 Time constant in measurement TC O20 Time constant in maintenance 00668 CODE40 Contact output S1 function selection See page 6 21 Function of contact output S1 81 CODE41 Contact output S2 f
32. Water Effluent Pressurized Head Tank TB750G Drain Detector Sample Water Sam Inlet Sample Water Valve ample Varer X Drain Valve upply Valve Tap Water Zero Water Drain Zero Water Supply Valve 7 Zero Water ___ 4 eNDrain Valve 4 Other Turbidity Detectors Zero Turbidity L pq F3 33E ai Figure 3 24 Piping Diagram 1 Piping of the Sample Line to the Detector This piping is for introducing a water sample into the measurement cell of the detector Install a pressurized head tank for low turbidity valves and pipes by referring to the diagram in Figure 3 24 1 For the piping from a sampling point to a sample water valve use a hose tube with sufficient diameter that provides adequate flow of water sample in order to prevent clogging The hose tube also should withstand the sample pressure The specified sample pressure when using a pressurized head tank is in the range of 20 to 500 kPa One example is a rigid PVC tube with nominal size of 16 22 mm OD 2 Forthe piping between the valve and the pressurized head tank use a 10 mm OD x 8 mm ID polyethylene tube and the corresponding fitting 3 To the sample water inlet of the detector attach a 3 way tee or appropriate fitting corresponding to the inlet s connection size Rc1 2 or 1 2 NPT This allows switching of the sample flow and the zero water flow 4 For the piping between the pressurized he
33. YES key to put the converter in the maintenance state analog output signal is held The HOLD indicator turns on Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level steps 2 and 3 cannot be done If analog output should be held during maintenance select Enabled H ON The factory default is Enabled H ON Close the sample water supply valve Close the sample water valve and open the drain valve of the head tank to drain the water from the head tank Check that the water in the head tank has been drained off Remove the pipes between the detector and the head tank Clean the inside using a long brush or relevant tool and wash away with tap water If pipes are heavily stained and dirt cannot be removed replace them with new ones Reinstall the pipes between the detector and the head tank Open the sample water valve to supply a water sample to the head tank Close the drain valve of the head tank Open the sample water supply valve to supply the water sample to the detector Putting the converter in measurement mode 1 Press the MODE key on the converter Check that the message display shows CALB 2 Press the NO key repeatedly until HOLD appears on the message display Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the NO key to exit from the maintenance state analog hold is held
34. air bubbles in the pipe line install the pipes so that no bends or stagnation occurs 2 Piping of the Sample Line from the Detector This piping is for draining a water sample from the measurement cell of the detector during measurement 1 2 The sample water outlet of the detector is Rc1 2 or 1 2 NPT female thread Install a fitting corresponding to the thread and connect a hose tube with sufficient diameter that provides adequate flow of water sample to route the water sample from the detector to a drain pipe As shown in Figure 3 20 the water sample from the detector should be discharged to the atmosphere at a point h higher than the measurement cell of the detector If not a siphon may be created and the measurement cell may not be filled with a water sample In addition if the sample inflow stops the water sample will be drawn off and the measurement cell will be emptied which can cause damage to the ultrasonic transducer if used 3 Drain Piping This piping is for draining a water sample from the measurement cell of the detector and a head tank during cleaning calibration or other maintenance 1 2 The drain of the detector is Rc1 or 1 NPT female thread Install a fitting corresponding to the thread and connect a hose tube with sufficient diameter that provides adequate flow of water sample to route the water sample from the detector to a drain pipe Install the pipe so that no bends or stagnation occu
35. and keys and press the ENT key e g 0 850 when the lab turbidity is 0 85 NTU 7 The turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 8 After the self adjustment is complete the message display will show CAL END Putting the converter in measurement mode 1 When CAL END is shown on the message display press the YES key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode atthe setting level a HOLD display in step 2 is not shown Calibration is now complete 7 MAINTENANCE 7 21 7 9 Checking and Replacing Desiccants If the humidity in the detector the light source unit and the receiver is high when a water sample with low temperature runs into the measurement cell condensation may form on the window glass To prevent this the light source unit and the receiver should be kept dry Remove the desiccants from the light source unit and from the receiver and check for softness with the hand Desiccants that have become soft thoroughly in gel form should be replaced 1 Putting the converter in the maintenance state 1 Pres
36. connection ANSI standard connection 1 Mounting hardware Pipe mounting hardware SUS Rack or wall mounting hardware SUS Panel mounting hardware SUS Mounting hardware for Model 8562 or Model TB500G replacement SUS 2 Conduit adapter G1 2 9 1 2NPT 3 Head tank Pressurized head tank for low turbidity recommended for 2 0 NTU or less Simple head tank Tag plate Stainless steel tag plate Special painting Epoxy painting 4 Ultrasonic transducer Transducer for ultrasonic cleaning 9 1 When option NPT is specified the piping connections of sample water inlet sample water outlet and drain port 2 3 5 2 4 2 1 2NPT 1 2NPT 1NPT respectively Unless option NPT is specified they are Rc1 2 Rc1 2 Rc1 respectively This bracket is also available to the detector of Turbidimeter 1720E and 1720D manufactured by HACH It is separete type each for detector and converter Conduit adapter is for power supply output and input wiring provided by customer Converter and detector case are painted with epoxy resin Specify option US ultrasonic transducer for ultrasonic cleaning Also TUS400G Ultrasonic Oscillator should be purchased separately Note When ultrasonic cleaning is continuously used after the Model 8562 Turbidity Transmitter has been replaced with the TB750G Turbidimeter this US option must be specified Zero Turbidity Filter Assembly Part Name Part No Filte
37. drain valve after the detector When the measurement cell is filled with the water open the drain valve to drain 3 Repeat steps 1 and 2 at least three times to wash the inside of the measurement cell Rinsing the measurement cell with the zero calibration solution 1 Make sure that the zero water supply valve and drain valve are closed 2 Remove the rubber cover from the top of the detector Remove the top cover by loosening the 6 setscrews 3 Slowly pour the zero calibration solution into the measurement cell taking care not to allow air bubbles to enter the cell When the measurement cell is filled to approximately 9096 with the solution open the drain valve to drain the calibration solution 4 Continue to pour the zero calibration solution to rinse the measurement cell Supplying the zero calibration solution to the measurement cell 1 Close the drain valve after the detector Pour the zero calibration solution into the measurement cell very slowly using a funnel or relevant equipment taking care not to allow air bubbles to enter the cell Care should be taken that the end of the funnel does not contact with the solution level F7 11E ai Figure 7 11 How to Pour the Standard Solution 2 The measurement cell should be filled to 9096 with the zero calibration solution Replace the top cover fix it securely with the 6 setscrews and attach the rubber cover Perform a zero calibration 1 Wait 3 to 5 minutes until the reading h
38. each contact output terminal and check the operation of each contact The contact must operate in accordance with the test settings 4 Pressing the ENT key will move the display to DO T2 Contact output test display 2 This is a contact output test for internal circuitry and should be skipped Press the ENT key to exit from the contact output test mode Putting the converter in measurement mode 1 Check that the message display shows SERV Press the MODE key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level a HOLD display in step 2 is not shown Test is now complete If the test finds a defect the converter need replacement for example of contact relays Contact our Service IM 12E01A06 01E 7 24 7 MAINTENANCE 7 10 3 Checking the Operation of the Contact Input The status of each contact input can be checked in contact input test mode CODE 73 at the service level on the converter 1 4 Putting the converter in analog output test mode CODE 73 1 Press the key on the converter for at least one second to enter the setting level 2 Press the NO key repeatedly until SERV appears on the message display Press the YES key to enter the service level 3 The message display should sho
39. is being powered IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 19 3 27 Serial Communication Wiring This wiring is for the serial communication RS 422 or RS 232C of the turbidity status error details and other information For details on specifications and transmission see Section 2 1 Standard Specifications Cable Required RS 422 Twisted pair cable with shield AWG 20 to 16 1000 m max RS 232C Cable with shield 10 m max Procedure 1 Terminating the cable Strip off approximately 40 mm of the insulation from the end of the cable Solder a lead wire to the exposed shield at its root Wrap the soldered area with an insulating tape or relevant protection Cut the attached lead wire so that it has approximately the same length as the conductor Terminate the ends of the lead wire and the conductors with crimp terminals corresponding the M4 Screw 2 Connecting the cable to the converter For RS 422 communication Serial communication RS 422 Terminals RX RX TX TX SG and For RS 232C communication Serial communication RS 232C Terminals TXD RXD SG and G For the connection to the receiver see Figure 3 17 A CAUTION The shield of the cable should be grounded only at the converter side Leave the receiver end of the shield disconnected Converter Receiver Converter Receiver RS 422 RS 232C F3 26E ai Figure 3 17 Serial Communication Wiring Diagram 3 2 8 Checking Wi
40. measurement mode 4 1 6 2 Span Calibrations 2 point Calibration Using Standard Solutions This section describes how to perform a 2 point calibration using standard solutions Prepare two types of turbidity standard solutions one with approximately zero turbidity and the other with approximately span turbidity For the turbidity standards used for calibration see Section 1 3 Formazin Standard Solution 1 IM 12E01A06 01E Putting the converter in calibration mode maintenance state 1 Press the MODE key on the converter The message display should show CALIB 2 Press the YES key to enter calibration mode Washing the measurement cell 1 Open the zero water supply valve to supply zero water to the detector 2 Close the drain valve after the detector When the measurement cell is filled with the water open the drain valve to drain 3 Repeat steps 1 and 2 at least three times to wash the inside of the measurement cell Rinsing the measurement cell with the zero calibration solution 1 Make sure that the zero water supply valve and the drain valve are closed 2 Remove the rubber cover from the top of the detector Remove the top cover by loosening the 6 setscrews 3 Slowly pour the zero calibration solution into the measurement cell taking care not to allow air bubbles to enter the cell When the measurement cell is filled to approximately 9096 with the solution open the drain valve to drain the calib
41. mode Flashes when asking you whether to enter the mode Lit when the YES key is pressed to accept YES To answer yes NO To answer no gt To move the flashing digit to the next in parameter setting To move the decimal point To increase the value of the flashing digit by one increment in parameter setting ENT To accept the keyed in values or item MODE To enter the operation level from measurement mode When in any mode other than measurement mode this is to cancel the current procedure and return to measurement mode P To enter the setting level from measurement mode Only this key should be pressed and held for at least one second to prevent accidental key presses 3 Lamps Contact status LED Lit when S1 S2 FAIL contact is activated Turbidity unit indication Turbidity unit indication is lit IM 12E01A06 01E 5 CONVERTER OPERATION 5 5 5 2 2 Panel Display upon Power Up The TB750G converter operates at the rated voltage Before operating the installation piping and wiring should be made in accordance with the instructions in Chapter 3 A CAUTION Before opening the front cover of the converter or the detector turn off power to the TB750G turbidimeter Make sure that the turbidimeter is not powered before wiring work Do not touch terminals while the turbidimeter is being powered AN NOTE The 750 turbidimeter does not have an internal power switch
42. now complete e a IM 12E01A06 01E 7 16 7 MAINTENANCE 77 2 point Calibration Using Turbidity Standard Solutions A 2 ponit calibration of the TB750G is performed with turbidity standard solutions equivalent to zero water and to span water After accepting both zero and span values the meter calculates a calibration factor There are three ways to prepare calibration standard solutions for the 2 point calibration as follows 1 Zero and span calibration standard solutions are prepared by the user 2 Azero solution is prepared by the user and a span solution is commercially obtained 3 Zero and span solutions are commercially obtained 1 Using user prepared zero and span solutions The turbidity of diluting water for calibration should be measured using a calibrated lab turbidimeter A span solution should be prepared in accordance with the instructions in Section 1 3 Formazin Standard Solution If the turbidity of diluting water is high as against the measurement accuracy add the turbidity of diluting water to the nominal turbidity of the prepared formazin standard solution Use diluting water as zero solution and a formazin solution as span solution for the calibration As a zero solution a formazin solution with a turbidity different from the span solution s may be used To perform a calibration accurately however it is recommended that standard solutions with approximately zero turbidity and with s
43. of E201 to E203 description Some revision of E204 description Some revision of Section 8 3 Error Code List Addition of 2 point calibration and panel mounting PM by a change of speci fications Newly published IM 12E01A06 01E
44. of at least 2 mm2 The terminal screw size is M4 Attach a corresponding crimp terminal to the end of the wire Toothed Lock Washer z Grounding Wire i i 2 Grounding Terminal M4 Screw amp a Nominal Size of at least 2 mm us F3 27E ai Figure 3 18 Grounding Terminal External Ground Wiring for the Detector The grounding terminal of the detector is located at the top of the back side as shown in Figure 3 19 Ground the terminal with JIS Class D grounding ground resistance 100 or less using a wire with nominal size of at least 2 mm2 The terminal screw is M5 Attach a corresponding crimp terminal to the end of the wire External Grounding Terminal M5 Screw F3 28E ai Figure 3 19 Grounding Terminal IM 12E01A06 01E 3 22 3 INSTALLATION PIPING AND WIRING 3 2 12 Power Wiring for the Ultrasonic Oscillator When Option Code US is Specified This wiring is for supplying a voltage to the TUS400G Ultrasonic Oscillator When the TUS400G is used in the system the power supply to the TB750G should be determined in accordance with the supply voltage specified for the TUS400G A CAUTION Before opening the front cover of the converter or the detector turn off power to the TB750G turbidimeter Make sure that the turbidimeter is not powered before wiring work Do not touch terminals while the turbidimeter is being powered
45. of zero water should be determined by collecting it drained from the zero water drain valve in a beaker or graduated cylinder for a certain amount of time 6 Close the zero water drain valve and open the zero water supply valve to introduce zero water to the detector 7 Upon power up the turbidimeter needs to warm up for at least one hour This warm up is needed also in terms of conditioning of the zero turbidity filter 4 1 4 Setting and Checking Parameters Set the relevant parameters to meet the individual operating conditions Some factory defaults may be used without reconfiguration if appropriate Even in that case make sure that important parameters are correctly set If any defaults have been changed it is good practice to record the changed settings for example in the Operation Parameter List at the end of this manual The types and operations of parameters are detailed in Chapter 6 which should be read through before parameter setting For reference the main setting parameters are provided below Output Signal Hold selection mode operation level Output range setting mode setting level Hold parameter setting mode setting level Range switching parameter setting mode service level CODE 30 Analog output 2 range selection mode service level CODE 33 Hold during failure parameter setting mode service level CODE 35 Negative nondisplay nonoutput selection mode service level CODE 54 Contact Output Alarm sett
46. on the level of importance the error codes are categorized into 3 parts errors E1xx E2xx and E3xx As for some errors in errors E2xx and E3xx whether error detection is enabled or disabled can be selected CODES 66 and 67 The errors are divided into three levels Level 1 severe Level 2 moderate and Level 3 minor depending on the degree to which the error affects the performance of the instrument While errors E1xx are preset to Level 1 and errors E3xx to Level 3 at the factory and both are not user configurable errors E2xx are user selectable to either Level 1 or Level 2 CODE 66 Table 8 1 Error Level E Cod Error Detection Error Level Selection rror Code CODE No Level 1 Level 2 Level 3 E101 to E104 Enabled fixed fixed E201 E202 Enabled disabled y default selectable CODE 66 E203 to E205 Enabled disabled Y default selectable CODE 66 E301 to E307 Enabled disabled Y fixed selectable CODE 67 E321 E351 E352 Enabled fixed Y fixed IM 12E01A06 01E 8 TROUBLESHOOTING 1 2 3 4 Table 8 2 Actions When an Error Occurs Error Output FAIL FAIL FAIL High Low If occurs during calibration Level Hold 1 Lamp Contact Indicator Alarm 2 calibration will Level1 On On Deenergized Lit Disabled Abort 3 Level 2 Off Off Energized Lit Enabled Continue Level 3 Off Off Energized Flashing Enabled Continue
47. press the ENT key 5 The turbidimeter starts the calibration self adjustment with the flashing entire data display Wait for a while 6 After the self adjustment is completed the message display will show CAL END 7 Press the NO key Check that STD CAL is shown on the message display Span Calibration N NOTE Precautions for Use of the Check Block Before using the check block wash it with mild detergent and then rinse it with water Do not wipe it dry and use it in wet condition For cleaning procedures refer to How to Clean the Check Block on Subsection 7 6 2 Following the zero calibration perform a span calibration using the check block 1 Installing the check block 1 Make sure that the zero water supply valve at the sample water inlet of the detector is closed Then open the drain valve to drain zero water 2 Remove the rubber cover from the top of the detector 3 Remove the retaining plate on the window of the top cover by loosening the 2 setscrews 4 Detach the observation window and replace it with the check block Fix it with the 2 setscrews securely 2 Introducing zero water 1 Open the zero water supply valve at the sample water inlet of the detector to introduce zero water 2 Check that zero water is drained from the drain of the detector Then close the drain valve 3 Supply zero water for approximately 5 minutes IM 12E01A06 01E 4 OPERATION 3 Performing a span calibrati
48. representative or service office Yokogawa will replace or repair any damaged parts and return the product to you Before returning a product for repair under warranty provide us with the model name and serial number and a description of the problem Any diagrams or data explaining the problem would also be appreciated If we replace the product with a new one we won t provide you with a repair report Yokogawa warrants the product for the period stated in the pre purchase quotation Yokogawa shall conduct defined warranty service based on its standard When the customer site is located outside of the service area a fee for dispatching the maintenance engineer will be charged to the customer In the following cases customer will be charged repair fee regardless of warranty period Failure of components which are out of scope of warranty stated in instruction manual Failure caused by usage of software hardware or auxiliary equipment which Yokogawa did not supply Failure due to improper or insufficient maintenance by user Failure due to misoperation misuse or modification which Yokogawa does not authorize Failure due to power supply voltage frequency being outside specifications or abnormal Failure caused by any usage out of scope of recommended usage Any damage from fire earthquake storms and floods lightning disturbances riots warfare radiation and other natural changes Yokogawa does not warrant conf
49. the corresponding contact status LED should turn on On test display 2 the operation of contact output for power on off of the ultrasonic oscillator and communication can be checked Note Settings for unused contact are invalid YES CODE ENT Contact output test display 1 v X 0 Non action or 1 Action Contact output S1 Contact output S2 ENT Contact output FAIL Range contact outputs Range A Range B Range C X X gt Contact output test display 2 DO T2 A 0 or 1 Action ENT X X Contact output for power on off of ultrasonic oscillator Contact output for communication FAIL contact will open deenergized when in action while S1 S2 and range contact will be closed energized when in action Contact output for power on off of ultrasonic oscillator will be closed energized when in action Contact output for communication will open deenergized when in action reset FG36E ai Figure 6 36 Contact Output Test Mode Flow Chart CODE 73 Contact Input Test Mode The current contact input state is displayed Refer to Section 7 9 3 YES ENT Contact input test display X 0 Non action or 1 Action X X Contact input 1 Contact input 2 F6 37E ai ENT Figure 6 37 Contact Input Test Mode Flow Chart IM 12E01A06 01E 6 28 6 PROCEDURES FOR SETTING PARAMETERS CODE 79 Initialization Mode Parameters are collectively in
50. tolerance and atthe regular maintenance work monthly There are some calibration methods as shown in Figure 7 5 for the calibration using turbidity standards 1 CALIB STD CAL ZERO Zero calibration using zero turbidity nae water filtered water as SPAN Span calibration using check block zero Span calibration using standard reference V solution 6 SMP CAL ZRSPN 2 point calibration using standard solutions p Zero point correction SPAN Sensitivity correction F7 5E ai Figure 7 5 Calibration Methods 1 Select when performing a calibration using 0 2 or 1 0 um filtered water as zero reference 2 Select when performing a 2 point calibration using standard solutions Use this method to perform a calibration complying with EPA METHOD 180 1 Refer to Section 7 7 2 point Calibration Using Standard Solutions 3 Select when performing a zero point or sensitivity correction after calibration 1 or 2 This method is a calibration using the water sample to adjust the meter reading to reflect the lab data Refer to Section 7 8 Grab Sample Calibration Note The instrument has been pre calibrated using 0 2 um filtered water as zero reference at the factory before shipment The following illustrates the concept of the above calibration methods IM 12E01A06 01E 7 MAINTENANCE Concept of Calibrations gt Before
51. value for output FH mA1 02 0t0220 m 220 Fixed value for output 2 FH mA2 00 0 to 22 0 mA 0 20mA 22 0 mA E 02 0 to 22 0 4 20 CODE37 Time constant setting See page 6 20 constant in measurement TC 000to120s 0205 Time constant in maintenance 000 TC M 000 to 1205 1 006 CODE40 Contact output S1 function selection See page 6 21 FunctionofcontactouputS1 51 0123 0 1 Alarm CODE41 Contact output S2 function selection See page 6 21 Function of contact output S2 1 s2 0 1 2 3 Maintenance CODE44 Delay time hysteresis setting See page 6 22 Delay time D TME 000to199s 000s 0 Hysteresis HYST 000 to 100 002 02 CODE50 Auto return function selection See page 6 22 A return function enabled or disabled RET 0 1 0 Disabled CODE51 Alarm setting function selection See page 6 23 Alarm setting function enabled or disabled MODE 0 1 0 Disabled CODE52 Password setting See page 6 23 Password O P PASS 0t9 CODE54 Negative nondisplay nonoutput selection See page 6 24 Negative nondisplay nonoutput enabledor MINUS 0 1 0 0Disabled disabled Disabled CODE61 Turbidity unit selection See page 6 24 Turbidity unit 2 NTU CODE64 Software version display See page 6 24 NN Software version display WER 10 CO
52. water supply should be in the range of 1 to 3 l min Forthe specifications of the zero turbidity filter see Section 1 2 To prevent corrosion of water inside the zero turbidity filter allow water to flow through the filter and flow out from the zero water drain valve continuously at a flow rate of approximately 10 ml min 4 OPERATION 4 1 4 OPERATION 4 1 Preparation 4 1 1 Installation Piping and Wiring Check Installation Check Make sure that the TB750G converter and detector are fixed firmly anyunused cable inlet ports are plugged with inserts The front cover of the converter and the front cover and the right and left side covers of the detector are seated tightly the desiccants are fresh The detector is of sealed construction and has desiccants inside Open the left and right side covers remove the desiccants and check for softness with the hand Desiccants soft textured in gel form should be replaced see Section 7 8 Wiring Check Make sure that all the necessary wiring is made correctly After checking be sure to attach the terminal cover the converter front cover and the detector front cover securely Piping Check Make sure that all the necessary pipes a head tank a zero turbidity filter and valves are installed by referring to Section 3 3 Piping 4 1 2 Supplying Power First ensure that the power supply to be used for the TB750G turbidimeter meets the specified voltage and frequency
53. with sufficient diameter that provides adequate flow of water sample in order to prevent clogging If pressure exists in a sample water use an appropriate tube that can withstand the pressure e g a rigid PVC tube 2 To the sample water inlet of the detector attach a 3 way tee or appropriate fitting corresponding to the inlet s connection size Rc1 2 or 1 2 NPT This allows switching of the sample flow and the zero water flow 3 Connect a sample water supply valve to one end of the 3 way tee fitting and then connect a hose tube with sufficient diameter that provides adequate flow of water sample between the valve and the head tank IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 25 4 Although the specified flow rate of the detector is in the range of 0 05 to 20 l min the actual flow rate should be at least 2 l min by adjusting the head difference of the head tank and selecting a hose tube with appropriate diameter This is due to the following reasons Toincrease the flow rate in the measurement cell of the detector to allow suspended matter to disperse uniformly To prevent suspended matter to accumulate in the measurement cell To dislodge air bubbles from the measurement cell and the measurement window surface Depending on the piping method a flow rate of 5 to 10 l min is obtained at a head difference of 1 m with piping with nominal diameter of 16A 5 To prevent clogging or stagnation of
54. 0 000 to 100 0 NTU Display 4 digit LCD 6 digits in message area negative value indication enabled disabled Unit NTU Resolution 0 001 NTU Turbidity standard Formazin Analog output Number of outputs 2 Output signal Analog output 1 4 to 20 mA DC isolated Analog output 2 4 to 20 mA DC or 0 to 20 mA DC selectable isolated Both analog outputs are not isolated Load resistance 5500 max Output range Configurable within the measuring range Minimum range 0 to 0 2 NTU Maximum range to 100 NTU Minimum span 20 or more of upper limit of the range or 0 2 NTU whichever is greater Note When auto range switching is selected lower limit of the range is 0 NTU Range switching Enabled disabled in either analog output 1 or 2 Not available in both outputs Manual local range auto range remote 2 range remote 3 range switching selectable Output signal in maintenance Output hold enabled disabled Hold output Last measured value or fixed value between 2 0 and 22 0 mA for 4 to 20 mADC output between 0 0 and 22 0 mA for 0 to 20 mA DC output selectable Output signal in FAIL Output hold enabled disabled Hold output Last measured value or fixed value between 2 0 and 22 0 mA for 4 to 20 mA DC output between 0 0 and 22 0 mA for 0 to 20 mA DC output selectable Negative value indication Enabled disabled Serial communication Number of outputs 1 Communication signal RS 422 or RS 232C isolated Communication specifications Da
55. 0 mA for 4 20 mA output 00 0 to 22 0 mA for 0 20 mA output error E352 will occur 6 PROCEDURES FOR SETTING PARAMETERS 6 11 6 3 Parameter Setting at the Service Level This section describes the setting procedures at the service level in order of code number Each setting mode at the service level can be accessed by entering the relevant code number Codes other than listed in Table 5 3 must entered Changing preset parameters may interfere with normal operation of the instrument As a general rule if an improper code number is accidentally entered press the MODE key to return to measurement mode SETPOINTS d I RANGE HOLD CAL WASH SERVICE x C D i E CAL WASH SETPOINTS RANGE SET HOLD Display when YES key is pressed on SETV To enter CODE 02 Pressing ENT key on this display will put the instrument in CODE 02 change the data display using the gt and keys F6 9E ai Figure 6 9 Entering a Code Number at the Service Level CODE 02 Input Voltage Display Mode Analog input signal values for turbidity measurement are displayed in volt YES CODE ENT pranox Transmitted light detection element input display IN1 Display range 0 3000 to 01 2500 V ENT uu Front scattered light detection element input display IN2 Display range 0 3000 to 01 2500 V ENT YES F6 10E ai Figure 6 10 Input Voltage Display
56. 1 have occurred VDC gt Request repair service IM 12E01A06 01E 8 TROUBLESHOOTING 5 6 7 8 E204 Lamp intensity failure Check Possible Cause and Action Remove front cover of detector and measure lamp voltage at terminal TM3 The voltage must be 3 5 0 1 VDC Lamp intensity has reduced to the degree that measurement error occurs gt Perform zero and span calibrations Prepare the spare If lamp voltage is outside the range board failure may have occurred gt Request repair service E205 Calibration failure Check Possible Cause and Action Check error code E3xx Any of errors E301 to E307 or E321 is occurring gt Take action in accordance with instructions in the relevant error code E301 Turbidity zero calibration coefficient A failure Check Possible Cause and Action Measure turbidity of zero water at a lab If turbidity is high zero filter element has failed gt Replace the zero filter element Perform a zero calibration If turbidity is normal check measurement cell window for dirt Dirt or air bubbles on window may interfere with accurate measurement gt Wash window with detergent Perform a zero calibration E302 Turbidity slope SL failure Check Possible Cause and Action Measure turbidity of zero water at a lab If turbidity is high zero filter element has fai
57. 1 Zero correction 2 Sensitivity correction Meas After sensitivity correction 20 Meas Before sensitivity correction after zero correction Before zero correction After zero correction D Before zero correction 49 Note In sensitivity correction after zero correction the zero point will shift 0 10 Std 0 10 Std 20 SW F7 7E ai Figure 7 7 Sensitivity correction after zero calibration Procedures of each calibration are described below For the turbidity standards used for calibration see Section 1 2 If the turbidimeter is used in conjunction with an optional ultrasonic cleaning system power to the ultrasonic transducer TUS400G should be removed before zero and span calibrations using turbidity standards Pressing the MODE key will abort the setting procedure IM 12E01A06 01E 7 10 7 MAINTENANCE 7 6 1 Zero Calibration Using Zero Water After washing the measurement cell supply zero water and perform a zero calibration in calibration mode STD CAL at the operation level 1 Putting the converter in calibration mode maintenance state 1 Press the MODE key on the converter The message display should show CALIB 2 Press the YES key to enter calibration mode Draining the water sample 1 Close the sample water supply valve 2 Open the drain valve after the detector to drain the water sample Washing the measurement cell 1 Open the zero water supply
58. 2 or 1 2NPT Note Dedicated cable is omitted Rc1 or 1NPT F3 4E ai IM 12E01A06 01E 3 4 3 INSTALLATION PIPING AND WIRING B Panel Mounting Option Code PM Converter 27 15 max panel thickness e em EX Detector 2 96 fixing holes 160 for fixing hole gt 220 outlet Rc1 2 or 1 2NPT Unit mm 4 M6 screws 100 HEH 185 min Note Dedicated cable is omitted lt Panel cutout gt F3 5E ai Sample water 38 Unit mm TF zh I 100 for fixing hole ixing Sample water inlet Rc1 2 or 1 2NPT IM 12E01A06 01E Rc1 or 1NPT Note Dedicated cable is omitted SEES 3 INSTALLATION PIPING AND WIRING B Replacing Model 8562 or TB500G Detector Option Code TBC Converter Detector 4 29 273 for fixing hole Note Dedicated cable is omitted 4 M5 for fixing hole 77 100 for detector fixing screw gt 112 for fixing hole for detector fixing screw 70 for fixing hole fixing screws of detector Unit mm F3 7E ai Unit mm Sample water
59. 2E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 3 Zero span calibration using Filtered Water as zero reference is generally performe on STD CAL display See Equation 6 1 2 pont calibration calibration using standard solutions is performed on SMP CAL If the turbidity measured by the instrument may differ from the one measured manually in a lab due to the difference of properties of the water sample and of turbidity measurement methods the instrument can be adjusted so that it reads the same value as the one measured in a lab by performing a a grab sample calibration on SMP CAL display In this case the instrument determine zero and sensitivity correction factors in addition to the calibration factor determined based on the calibration using standards See Equation 6 2 T1 SO SL 100 V A Equation 6 1 T2 K T14B Equation 6 2 Where T1 Turbidity based on turbidity standards S0 SL T2 Reference sensitivity reference turbidity standards Calculated in CODE 18 reference sensitivity calibration at service level This calibration is performed at the factory before shipment Slope S0 S Ratio of span calibration factor S determined when span calibration is performed using standards to reference sensitivity SO The value is displayed in CODE 12 at service level Zero calibration factor reference turbidity standards Calculated in zero calibration using standards Th
60. 3 23 3 3 PIPING e 3 24 3 3 1 System Using an Open Head 3 24 3 3 2 System Using a Pressurized Head 3 28 3 3 3 System without a Head Tank seen 3 31 OPERATION e 4 1 4 1 PreparatiOl EE 4 4 4 1 1 Installation Piping and Wiring 4 1 4 1 2 Supplying Power essen emen 4 1 4 1 3 MEDIE OSEE 4 2 4 1 4 Setting and Checking 4 2 4 1 5 Zero and Span Calibrations Using Filtered Water as Zero Reference 4 3 4 1 6 Zero and Span Calibrations 2 point Calibration Using Standard Solu MOIS 4 4 4 1 7 Supplying a Water Sample and Adjusting the Flow Rate 4 6 4 1 8 Operation Check eene ntn oet ong a 4 7 4 2 Normal 4 8 4 2 1 When a Failure 4 8 4 2 2 Inspection and 4 8 4 2 3 When Sample Water Supply is Cut 4 8 4 2 4 When a Power Failure Ocours eeeenne 4 8 4 3 Operation Shutdown and Restart cc cccesecceseeeeeeeees
61. 38 outlet 25 Rc1 2 or 1 2NPT je A E dio Ll I I o A ul p je dic i 14 T Sample water inlet Drain Rc1 2 or 1 2NPT Rc1 or 1NPT Note Dedicated cable is omitted F3 8E ai IM 12E01A06 01E 3 6 3 INSTALLATION PIPING AND WIRING 3 1 4 Preparation Attaching Optional Parts Optional parts such as mounting brackets or conduit adapters are supplied with the instrument when specified To avoid misplacing any of these parts it is recommended that they should be attached to the instrument before installation Preparing an Installation Site Prepare an installation site for the TB750G so that easy operation and maintenance are allowed 1 Pipe Mounting The TB750G is fixed to a stanchion pipe with a U bolt Construct a rigid pipe with an outside diameter of 60 5 mm vertically or horizontally for converter 2 Wall Mounting The TB750G converter is mounted on the wall with three M8 bolts supplied by customer Drill the holes in the wall as shown in Figure 3 1 Unit mm 102 F3 9E ai Figure 3 1 Drilling for Wall Mounting Converter The TB750G detector is mounted on the wall with four M5 bolts supplied by customer Drill the holes in the wall as shown in Figure 3 2 378 Unit mm 5 20 e 1 oes 5 2292209 p Figure 3 2 Drilling for Wall Mounting Detector 224
62. 6 01E 3 14 3 INSTALLATION PIPING AND WIRING 3 2 3 Analog Output Wiring This wiring is for transmitting an output signal of the converter to a receiver such as a recorder Two outputs are available output 1 4 20 mA DC and output 2 4 20 or 0 20 mA DC A CAUTION Before opening the front cover of the converter or the detector turn off power to the TB750G turbidimeter Make sure that the turbidimeter is not powered before wiring work Do not touch terminals while the turbidimeter is being powered Cable Required Use a shielded cable with a finished outside diameter of 6 to 12 mm The number of conductors is determined by that of signals 2 or 4 conductors Procedure 1 Terminating the cable Strip off approximately 40 mm of the insulation from the end of the cable Cut off the exposed shield as short as possible and solder a lead wire for grounding with approximately the same length as the conductor to the remaining exposed shield Wrap the soldered area with an insulating tape or relevant protection Then terminate the ends of the lead wire and the conductors with crimp terminals corresponding to the M3 screw 2 Connecting the cable to the converter Connect the lead wire and the conductors of the cable to the specified terminals on the converter Output 1 mA1 Terminals and Output 2 2 Terminals and Grounding wire Terminal G N NOTE The shield of the cable should be grounde
63. Cable Required Use a 2 conductor cable with a nominal size of at least 0 5 mm2 and a finished outside diameter of 6 to 12 mm The cable performance should also be equivalent to or exceeds that of a 600 V vinyl insulated wire JIS C3307 Procedure 1 Terminating the cable Strip off approximately 40 mm of the insulation from both ends of the cable Terminate the ends of each conductor with crimp terminals corresponding to the M4 screw 2 Connecting the cable to the detector Remove the front cover of the TB750G detector and then remove the cover for the power terminals for the ultrasonic oscillator terminal TUS Connect the conductors of one end of the cable to terminals L and N Replace the terminal cover To run the cable through the cable gland remove the assembled parts from the cable gland body atthe cable inlet port H and then slide these parts over the cable in order 3 Fixing the cable Adjust the cable length housed in the detector and fix the cable by mounting the parts to the cable gland body 4 Connecting the cable to the TUS400G Connect the conductors of the other end of the cable to power terminals L1 and L2 on the TUS400G For details see the TUS400G User s Manual IM 19C01B04 01E IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 23 3 2 13 Wiring to the Ultrasonic Transducer When Option Code US is specified This wiring is for connecting a dedicated cable for the ultrasonic transducer suppl
64. DE66 Error 2 error level selection See page 6 25 Error levels of errors E201 to E206 201 6 0 1 2 112222 CODEG7 Error error detection selection See page 6 25 Error detection for E301 to E306 7 3016 01 1 1 1 1 1 1 MENT Error detection for E307 30 01 1 Error detection for E311 to 1 3828 0 1 111111 Error detection for E317 s1 61 CODE71 Analog output test See page 6 26 NONSE E Start test for output 1 AMT Test current flowing Stattestforouput2 AoT Test current flowing 2 End ENDED CODE72 Contact output test See page 6 27 Test 1 DO T1 0 1 Last measured value held l Tst2 DOT2 031 Last measured value held CODE73 Contact input test See page 6 27 CODE79 Initialization See page 6 28 Sat OD Toc Default loading 0 IM 12E01A06 01E 5 12 5 CONVERTER OPERATION IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 1 6 PROCEDURES FOR SETTING PARAMETERS Parameters should be set and function should be selected properly according to application and measurement conditions This chapter describes the procedures for setting parameters at the operation level the setting level the service level 6 1 Param
65. Factor Setting Mode Flow Chart CODE 16 Standard Solution Check Block Selection Mode Whether to use a standard solution or check block for span calibration can be selected YES ENT X A Standard solution or check block CAL TP X 0 Standard solution or 1 Check block ENT F6 17E ai Figure 6 17 Standard Solution Check Block Selection Mode Flow Chart CODE 17 Check Block Turbidity Setting Mode A turbidity value of the check block used for span calibration can be set 17 CODE X XXX PLATE ENT 1 First decimal point should be determined and then the value set F6 18E ai Figure 6 18 Check Block Turbidity Setting Mode Flow Chart YES gt Check block turbidity A Setting range 0 001 to 2000 NTU IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 17 CODE 18 Reference Sensitivity Calibration Mode This mode is for determining reference sensitivity SO in calibration using turbidity standards that is performed at the factory before shipment Refer to Section 6 1 1 This mode should not be accessed in the field The reference sensitivity however needs to be calibrated if the sensitivity is changed for example after optical components have been replaced due to the hardware failure and the sensitivity cannot be adjusted in the normal calibration using standards In that case be sure to contact our Service NO Reference sensitivity calibration Start gt Tur
66. IM 12E01A06 01E 1 OVERVIEW 1 5 5 Bring the total volume to 1000 ml with deionized water This is a 400 NTU formazin standard stock solution and its storage life is one month To make a standard solution of the desired turbidity dilute this stock solution with deionized water 1 3 2 Preparing Formazin Calibration Standard Solution To make a formazin calibration standard solution dilute the 400 NTU formazin standard stock solution 1 Precautions Use clean high quality laboratory glassware and measure the volume needed accurately Todilute the formazin standard stock solution use deionized water or water filtered through a 0 2 zero turbidity filter Before dilution mix the stock solution thoroughly 2 Procedure To make a 2000 ml formazin calibration standard solution of the desired turbidity take the needed volume of the 400 NTU formazin standard stock solution and dilute to 2000 ml Turbidity Aliquot of Stock Solution Total Volume 20 NTU 100 ml 2000 ml 10 NTU 50 ml 2000 ml 5 NTU 25 ml 2000 ml 2 NTU 10 ml 2000 ml 1 NTU 5 ml 2000 ml IM 12E01A06 01E 1 6 1 OVERVIEW IM 12E01A06 01E 2 2 1 2 SPECIFICATIONS gt 2 1 SPECIFICATIONS Standard Specifications TB750G Right Angle Scattered Light Turbidimeter Measurement Turbidity of finished water and water used in general processes Measurement method Right angle light scattering method Measuring range
67. In this mode a high and or low alarm setpoints can be set These setpoints are effective when a high low alarm function is assigned to either one or both of contact outputs 51 and 52 in CODES 40 and or 41 at the service level If either of contact output function is not set to 1 Alarm this mode will be skipped YES gt High alarm setting display A Setting range 010 0 to 2200 0 NTU ENT gt Low alarm setting display A Setting range 010 0 to 2200 0 NTU ENT Figure 6 6 SETPOINTS Mode Flow Chart F6 6E ai Note The alarm function does not work during maintenance or while a level 1 error is occurring IM 12E01A06 01E 6 8 6 PROCEDURES FOR SETTING PARAMETERS 2 RANGE Mode RANGE In this mode an output range corresponding to analog output 1 and 2 can be set Enter turbidity values corresponding to a 4 mA or 0 mA output signal zero point and a 20 mA output signal span point Enter the values so that the both of the following two conditions are met Zero point span point Span point zero point 2 2096 of span point or 0 20 NTU whichever is greater Failure to meet these conditions will cause error E351 NO 3 LOCAL 4 Local range for output 1 X 0 Range A 1 Range or 2 Range C Local range for output 2 X 0 A 1 Range or 2 Range C 1 Skipped if analog output range switching selection RNGPR is set to 1
68. S RANGE RANGE SET HOLD SET HOLD CAL WASH CAL WASH SERVICE SERVICE Pointer is flashing at lt SETPOINTS gt mode and YES and NO key Display shown above appears when YES key is pressed Pointer indicators are flashing This is asking you whether to enter alarm stops flashing S TB H appears on message display and the setting mode and prompting you to answer by pressing YES or NO leftmost digit of data display flashes prompting data entry HOLD key indicator depends on setting F5 9E ai Figure 5 8 Examples of Displays at the Setting Level Once the turbidimeter enters the setting or service level a message with an asterisk will appear IM 12E01A06 01E 5 CONVERTER OPERATION 5 7 3 Entry of Numeric Values N NOTE Keyed in and accepted values will not disappear even if power is turned off Tentatively keyed in values should be reset As an example to demonstrate how to enter a numeric value take the display shown in Figure 5 8 2 A procedure for changing 2200 0 to 0050 0 is described below 1 2 3 4 Press the key repeatedly until flashing 2 changes into 0 Press the gt key to move the flashing digit to next 2 and change it into 0 using the key Press the gt key to move the flashing digit to next 0 and change it into 5 using the key Press the ENT key The value of 0050 0 will be accepted and the display will move to the next s
69. Then supply power to the TB750G turbidimeter Upon power up the software version number appears on the display and the instrument goes into the measurement state Main Operation in Measurement Mode with Factory Parameter Settings The display shows a turbidity reading in NTU The message display shows the output current of analog output 1 A4 20 mA DC analog output representing turbidity is provided When the turbidimeter detects a failure the FAIL lamp will turn on and the FAIL contact output will be activated NO contact will be closed NC contact will open IM 12E01A06 01E 4 2 4 OPERATION 4 1 3 Warm up Supply zero water to the turbidimeter and allow it to warm up How to operate the valves is described based on the piping diagrams in Figures 3 20 3 24 and 3 25 1 Make sure that the valves the valves on the sample and zero water lines before the detector and the drain valve are closed 2 The valve after the sample water outlet of the detector if installed should be opened completely 3 Open the tap water valve and the zero water drain valve to introduce tap water and check for leakage 4 Loosen the air vent plug on top of the zero turbidity filter and leave it open until tap water overflows from the filter This is to remove air from the filter Then close the plug tightly 5 Adjust the opening of the tap water valve until the flow rate of zero water is in the range of 1 to 3 l min The flow rate
70. User s Manual Model TB750G Right Angle Scattered Light Turbidimeter IM 12E01A06 01E vigilantplant YOKOGAWA IM 12E01A06 01E 3rd Edition Yokogawa Electric Corporation INTRODUCTION i INTRODUCTION m Structure of this Manual This manual describes the specifications installation operation maintenance and troubleshooting for the TB750G Right Angle Scattered Light Turbidimeter To use this instrument correctly read this manual thoroughly m Specification Check When the instrument arrives unpack the package with care and check that the instrument has not been damaged during transportation Please check that the product received meet the specified specifications by confirming the model code indicated on the nameplate For details of the model code refer to Section 2 4 1 on page 2 7 m Before Measurement The TB750G turbidimeter is preset with defaults prior factory shipment Before measurement verify that these factory default settings meet the operating conditions and if necessary reconfigure param eters For checking the default settings and recording changed parameters use an Operation Param eter Setting List at the end of this manual Media No IM 12E01A06 01E CD 3rd Edition Mar 2015 YK IM 12E01A06 01E All Rights Reserved Copyright 2005 Yokogawa Electric Corporation ii INTRODUCTION Symbols and Notations Used in this Manual m Symbols The following symbols are used in thi
71. ad tank and the detector connect a valve to one end of the 3 way tee fitting and connect a 6 mm OD x 4 mm ID polyethylene tube and the corresponding fitting between the valve and the pressurized head tank 5 To the fitting on the bypass valve needle valve at the top of the pressurized head tank connect a 6 mm OD x 4 mm ID polyethylene tube 6 To prevent clogging or stagnation of air bubbles in the pipe line install the pipes so that no bends or stagnation occurs IM 12E01A06 01E 3 30 2 Piping 3 INSTALLATION PIPING AND WIRING of the Sample Line from the Detector This piping is for draining a water sample form the measurement cell of the detector during measurement As shown in the piping diagram in Figure 3 24 connect a needle valve to the sample water outlet of the detector By adjusting the opening of this valve and the bypass valve needle valve at the tope of the pressurized head tank the pressure change in the piping between the head tank and the detector outlet is controlled and thus the generation of air bubbles is prevented 1 2 To the sample water outlet of the detector connect a fitting such as an elbow fitting corresponding to the connection size Rc1 2 or 1 2 NPT female and a needle valve To the outlet of the needle valve connect a 6 mm OD x 4 mm ID polyethylene tube using the corresponding fitting to drain the water sample to a drain pipe As shown in Figure 3 24 the wate
72. ad tank for removing air bubbles be installed A head tank is for removing air bubbles and thus for preventing them from reaching the detector In rare cases however air bubbles occur and grow in the pipe between the head tank and the detector and rise to the surface of the measuring cell resulting in reading fluctuation The converter has a signal averaging function with a user configurable averaging factor Small changes in readings due to air bubbles or dust can be covered to some degree by increasing the time constant However it is not good practice to set the time constant too high because it can cause a delay in the response of the turbidity signal The spike detection function is to detect and suppress a sudden change due to air bubbles or dust in turbidity readings and outputs IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 13 How It Functions To suppress a sudden fluctuation due to air bubbles or dust the TB750G checks a turbidity signal before averaging 1 2 calculates the difference between the current signal and the previous signal 3 compares the difference with the Limit Value 4 ifitisless than the Limit Value proceeds to averaging and gives the turbidity reading 5 if itis greater than the Limit Value holds the output for a specified Hold Time period 6 during that period suspends the Limit Value check 7 afterthe Hold Time has elapsed averages signals without the Limit Value chec
73. all a pressurized head tank to prevent pressure changes in the piping from the head tank to the detector outlet and thus prevent air bubbles from occurring in the pipe CAUTION Sample water conditions and ambient temperature must meet the specifications maximum pressure 500 kPa sample temperature 0 to 50 ambient temperature 5 to 50 Any failure to meet the specifications may damage the detector or other instruments When the sample pressure is reduced by using a pressure reducing valve or by other means air bubbles may form in the piping In that case consider the use of an open head tank An optional pressurized head tank for low turbidity measurement option code D1 shown in Figure 3 23 is available from Yokogawa Unit mm Pressure gauge Range 0 to 500 kPa Needle valve Material SUS316 Approx 127 Drain 06 04 PE tube coupling Sample water outlet to detector 06 04 PE tube coupling Drain plu Approx 332 Sample water inlet 4 96 2 holes 210 98 PE tube coupling F3 32E ai Figure 3 23 Pressurized Head Tank for Low Turbidity IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 29 The piping diagram of a system including the pressurized head tank is shown in Figure 3 24 Pressure G auge Bypass Valve Flow Control Valve Sample
74. amp life Zero calibraitorn During zero calibration self adjustment input at the same time expired coefficient A voltage IN1 is less than specified voltage during failure error is z a rewriting timing for 5 consecutive seconds Not detected once removed EAM excluding when E301 is occurring Rewriting of zero when E3010r __ calibration coefficient A is performed E311 occurs 1 E205 Calibration E301 to E307 Any of E301 to E307 E321 during PC When problem is failure E311 to E317 communication is occurring eliminated When E321 during PC YES NO key is communication pressed error code occurrence display disappears timing atthe same time during failure error is once removed IM 12E01A06 01E 8 TROUBLESHOOTING Table 8 4 Error Code List 2 2 No Error Occurrence Problem Return E301 Turbidity zero During zero Turbidity zero calibration coefficient A newly When problem is calibration calibration zero determined after zero calibration zero water eliminated When coefficient A water or lamp OFF is outside of the range of 0 to 5 YES NO key is failure or each coordinate value of newly determined pressed error code linearized table is outside of the range of display disappears 99999 to 999999 atthe same time E302 Turbidity slope During span Turbidity slope value SL newly determined during UM 5 SL failure calibration after span calibration standard solutio
75. as stabilized Check that STD CAL is shown on the message display 2 Press the NO key The message display should shoe SMP CAL Press the YES key 3 The message display should show ZRSPN Press the YES key to select the zero calibration 4 The message display should show VALUE Z 5 Set the decimal point position in the data display using the gt key Press the ENT key to accept the position e g 0 000 6 Setthe value on the data display to the value of the zero calibration solution using the and keys and press the ENT key e g 0 020 7 The turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration IM 12E01A06 01E 7 18 7 MAINTENANCE 10 13 14 IM 12E01A06 01E 2 2 x 8 After the self adjustment is complete the message display will show SPAN Note At this stage the zero calibration has not been yet reflected in measured values A calibration factor will be calculated after the span calibration is completed Open the drain valve after the detector to drain the zero calibration solution Rinsing the measurement cell with the span calibration solution 1 Make sure that the zero water supply valve and the drain valve are closed 2 Rem
76. asurement cell may not be filled with a water sample In addition if the sample inflow stops the water sample will be drawn off and the measurement cell will be emptied which can cause damage to the ultrasonic transducer if used 3 Drain Piping Th ca 1 2 4 Piping Th ca 1 2 IM 12E01A06 01E is piping is for draining a water sample from the measurement cell of the detector during cleaning libration or other maintenance The drain of the detector is Rc1 or 1 NPT female thread Install a fitting corresponding to the thread and connect a hose tube with sufficient diameter that provides adequate flow of water sample to route the water sample from the detector to a drain pipe Take care to install the pipe so that no stagnation occurs As shown in Figure 3 25 install a pipe so that the water sample drained from the detector to the drain pipe of the Zero Water Line is piping is for introducing tap water passed through a zero turbidity filter to the detector for zero libration or measurement cell cleaning As shown in Figure 3 25 install a tap water valve and a zero water drain valve Connect a zero water supply valve to one end of the 3 way tee fitting attached to the sample water inlet of the detector Install a fitting corresponding to the piping connection of the zero turbidity filter and connect an hose tube that can withstand the pressure of tap water such as a rigid PVC tube The flow rate of zero
77. ata display using the gt key Press the ENT key to accept the position e g 0 000 when using a 2 NTU formazin calibration standard solution 5 Setthe value on the data display to the value of the calibration standard solution using the gt and keys and press the ENT key e g 2 000 when using a 2 NTU formazin calibration standard solution 6 The turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 7 After the self adjustment is complete the message display will show CAL END 8 Open the drain valve after the detector to drain the calibration standard solution 9 Open the sample water supply valve to supply the water sample to the detector It will take time for the replacement of the entire solution in the measurement cell from the calibration standard solution to the water sample Putting the converter in measurement mode 1 When CAL END is shown on the message display press the YES key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level a HOLD display in step 2 is not shown 11 Span calibration is
78. ate activate all the instruments in the loop configuration such as ultrasonic cleaning equipment Continue a test run for a while and make sure that the system is free of defects Then put the system into normal operation IM 12E01A06 01E 4 8 4 OPERATION 4 2 4 2 1 4 2 2 4 2 3 4 2 4 4 3 4 3 1 4 3 2 Normal Operation The TB750G turbidimeter does not normally require any manual operations except when periodic cleaning calibration is performed or when a failure occurs When a Failure Occurs If the TB750G turbidimeter detects a failure it provides a FAIL contact output The message display shows the error number that tells what kind of failure has occurred Check the number and take remedial actions accordingly and immediately For details on error descriptions refer to Chapter 8 Inspection and Maintenance The turbidimeter should be washed and calibrated at appropriate intervals so that the deviations of readings are within tolerance For inspection maintenance items and intervals see Section 7 1 When Sample Water Supply is Cut Off The turbidity measurement is not affected by temporary suspension of sample water supply but long term suspension may interfere with the accuracy of the instrument Since the TB750G cannot detect whether the sample water supply is stopped or not periodical check of the sample line is needed When a Power Failure Occurs The parameter settings and other information set
79. ay Press the NO key to exit from the maintenance state analog hold is held and return to measurement mode The HOLD indicator turns off 6 Desiccant check is now complete After checking or replacing desiccants allow the instrument to warm up for at least one hour before measurement so that desiccants can remove moisture inside the detector IM 12E01A06 01E 7 22 7 MAINTENANCE 7 10 Checking the Operation of Each Input Output Upon startup or when a failure occurs the operation and status of each input output analog output contact output and contact input can be checked in analog output test mode CODE 71 contact output test mode CODE 72 and contact input test mode CODE 73 at the service level on the converter 7 10 1 Checking the Operation of the Analog Output Output currents of analog output 1 and 2 terminals can be checked in analog output test mode CODE 71 atthe service level on the converter using a tester or relevant equipment 1 4 Putting the converter in analog output test mode CODE 71 1 2 3 Press the key on the converter for at least one second to enter the setting level Press the NO key repeatedly until SERV appears on the message display Press the YES key to enter the service level The message display should show CODE Set the data display to 71 using the gt and keys Then press the ENT key Checking the operation of the analog output for deta
80. ay form in the piping In that case consider the use of an open head tank The piping diagram of a system without a head tank is shown in Figure 3 25 Flow Control Valve Sample Water Effluent TB750G Detector Process Piping Drain Sample Water Sample Water Drain Port Inlet PX Sample Water X Drain Valve gt Sample Water A er aon Zero Water Supply Valve diia Drain Zero Water Supply Valve Y Zero Water 4 Drain Valve r0 p L Other Turbidity Detectors L Zero Turbidity Filter L bq F3 34E ai Figure 3 25 Piping Diagram 1 Piping of the Sample Line to the Detector This piping is for introducing a water sample into the measurement cell of the detector Install valves and pipes by referring to the diagram in Figure 3 25 1 Forthe piping from a sampling point to the sample water valve in the sample line to the detector use a hose tube with sufficient diameter that provides adequate flow of water sample to prevent clogging The hose tube also should withstand the sample pressure One example is a rigid PVC tube with nominal size of 16 22 mm OD 2 To the sample water inlet of the detector connect a 3 way tee or appropriate fitting corresponding to the inlet s connection size Rc1 2 or 1 2 NPT This allows switching of the sample flow and the zero water flow IM 12E01A06 01E 3 32 3 INSTALLATION PIPING AND WIRING 3 4 2 Pip
81. bidity value A Setting range 0 001 to 2000 NTU Self adjustment in process Self adjustment 3 or ENT X XXX 50 1 During the time between the start and the end of the CODE 18 procedure data display shows turbidity based on sensitivity correction factor K 1 and zero correction factor B 0 2 First determine decimal point using gt key and the set the value 3 Pressing ENT key during self adjustment will abort the procedure and the turbidity when ENT key is pressed will be used for calibration factor calculation End Note Calibration factor will be updated when the calibration procedure is completed without cancellation or errors Cancellation or error before the display shows SO END will not update the factor F6 19E ai Figure 6 19 Reference Sensitivity Calibration Mode Flow Chart IM 12E01A06 01E 6 18 6 PROCEDURES FOR SETTING PARAMETERS CODE 30 Analog Output Range Switching Parameter Setting Mode Various parameters in relation to the analog output range switching function can be set YES NO Y XXXX XX XXXX XX ZERO ZERO ZERO ENT ENT ENT XXXX XX XXXX XX 2 5 5 5 XXX VIENT 4 VIENT 4 ENT 4 AUTOR ENT 1 Returns to SERV display if RNGPR is set to 0 Fixed 2 Displayed only if RSET is set to 1 Automatic 3 Skipped if RSET is se
82. bration 2 in maintenance excluding calibration Range status output range 2 0 fixed range 1 range A 2 range B 3 range Range status output range 1 0 fixed range 1 range A 2 range B 3 range Alarm generation 0 no alarm 1 alarm generated Error generation 0 no error 1 error generated Error information 1 hexadecimal Error code E101 to E104 Bit configuration 0 no error 1 error generated 1514 131211109876 54 32 1 0 E101 E102 E103 E104 Reserved 0 Error information 2 hexadecimal Error code E201 to E205 Bit configuration 0 no error 1 error generated 1514131211109 876 54 32 10 E201 E202 E203 E204 E205 Reserved 0 Error information 3 hexadecimal Error code E301 to E307 Bit configuration 0 no error 1 error generated 1514131211109 876 543210 E301 E302 E303 E304 E305 E306 E307 Reserved 0 Error information 4 hexadecimal Reserved Bit configuration 1514 131211109876 54 32 1 0 Reserved 0 Error information 5 hexadecimal Error code E321 E322 Bit configuration 0 no error 1 error generated 1514131211109 876 54 32 10 E321 E322 Reserved 0 SUM The last two digits of the total before SUM IM 12E01A06 01E 2 SPECIFICATIONS gt Note Return data when a communication error occurs AR2 Ch LE SUM Communicat
83. calibration Meas Measured value After calibration STD CAL ZERO SPAN SMP CAL ZRSPN ZERO Concept of Calibration Figure 7 6 IM 12E01A06 01E Std Turbidity standard SW Sample water All numbers in figures are examples Zero calibration using zero turbidity water 0 2 1 um filtered water as zero reference Not accept values other than 0 Calculates A to change calibration factor Span calibration using check block standard solution Calibrates so the instrument has reference sensitivity at the time of factory shipment Displays the value of check block if 1 Check block is specified in CODE 16 at the service level 2 point calibration using calibration solutions Not use filtered water as zero reference Turbidity value of zero calibration solution should be entered in VALUE Z Turbidity value of span calibration solution should be entered in VALUE S Calculates calibration factor after the inputs of zero and span values Zero correction Uses water sample Corrects deviation by adjusting measured value to the lab data of water sample Sensitivity correction Uses water sample Corrects sensitivity by adjusting measured value to the lab data of water sample F7 6E ai 7 MAINTENANCE 7 9 Note Either zero correction or sensitivity correction can be performed For instance a sensitivity correction after a zero corrosion will move the zero point
84. cattered light detection elementinputdispay preg Mendy CODEOS8 Spike detection parameter setting See page 6 12 Spkedetecionfuntionenabedordisabed SPIKE ODisabed Limitvaue LMIT 999999NTU Hod me HLD T 0305 Sampingim SMP T oss CODE11 Zero calibration factor display See page 6 15 Zero calibration factor display CALA DepndsonMS Code CODE12 Slope display See page 6 15 Slope display 10009 CODE13 Zero correction factor setting See page 6 15 Zero correction factor setting CALB CODE14 Sensitivity correction factor setting See page 6 16 Sensitivity correction factor setting CALK 1000 CODE16 Standard solution check block selection See page 6 16 Standard solution or check block CALTP 1 CheckBlock CODE17 Check block turbidity setting See page 6 16 Check block turbidity LATE 9000NTU CODE30 Analog output range See page 6 18 switching parameter setting Range switching output selection RNGPR 7 Range switching function selection RSET 1 Automatic RangeAseting RSERA WD ot tll eases P Zero pointforrangeA ZERO SpanpoitforranppA A RangeBseting RN oem ew Zero point for rangeB ZERO 4 A
85. ce IM 12E01A06 01E 7 MAINTENANCE 7 23 7 10 2 Checking the Operation of the Contact Output The status of the contact output can be checked in contact output test mode CODE 71 at the service level on the converter using a tester or relevant equipment 1 4 Putting the converter in analog output test mode CODE 72 1 Press the key on the converter for at least one second to enter the setting level 2 Press the NO key repeatedly until SERV appears on the message display Press the YES key to enter the service level 3 The message display should show CODE Set the data display to 72 using the gt and keys Then press the ENT key Checking the operation of the contact output for details see Figure 6 36 1 Check that the message display shows DO T 1 Contact output test display 1 2 Set each digit on the data display to 0 Non action or 1 Action using gt and keys Each digit of the data display corresponds the contact output as follows Data display Digit No 1 2 3 4 5 6 Digit description 1 S1contact output 2 S2 contact output 3 FAIL contact output 4 Range A contact output RANGE COM 5 Range B contact output RANGE COM 6 Range C contact output RANGE COM 3 When each digit of the data display is set to 0 Non action or 1 Action the corresponding contact is put in the status accordingly Connect a tester or relevant equipment to
86. d by customer Should be long enough to be secured through mounting hole Mounting Holes 4 F3 15E ai Figure 3 7 Wall Mounting Detector 3 Panel Mounting Figure 3 8 shows the panel mounting procedure for the converter Converter Bracket Mount the converter by inserting it into the panel cut opening Setscrews 2 F3 16E ai Figure 3 8 Panel Mounting Converter The procedure for detector s panel mounting is the same as the one for its wall mounting See Figure 3 7 IM 12E01A06 01E 3 10 3 INSTALLATION PIPING AND WIRING Depending on the installation position the converter detector connecting cable may need to be disconnected once In that case disconnect the cable end from the converter by following the instructions below lt How to Disconnect the Converter Detector Connecting Cable gt a Connector 1 Open the front cover of the converter Next remove the following a Connector b Grounding wire c Ferrite core Ferrite Core Grounding Wire 2 Loosen the cable gland and pull out the cable gland s ring that is attached to the inside of the cable inlet port on the converter Cable Gland s Ring 3 Slide the ring over the cable the connector and the wire until it comes off Orient the connector as shown in the picture to the left so that it goes through the ring 4 Remove the cable and the wire from the converter by carefully pulling them out through th
87. d only at the converter side Leave the receiver end of the shield disconnected To run the cable through the cable gland remove the assembled parts from the cable gland body at cable inlet port E and then slide these parts over the cable in order 3 Fixing the cable Adjust the cable length housed in the converter and fix the cable by mounting the parts to the cable gland body IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 15 3 2 4 Contact Input Remote Range Switching Wiring Either of analog outputs can be used for range switching for which any of manual local range switching auto range switching remote 2 range switching or remote 3 range switching can be selected This wiring should be made when remote 2 range or 3 range switching is selected Contact input on off signals are distinguished by resistance conditions shown in Table 3 1 Before wiring ensure that the contacts meeting the conditions are used Table 3 1 On Off Conditions of Contact Input for Remote Range Switching On Condition Off Condition Resistance contact lt 2000 gt 100 The contact input for remote range switching is turned on and off between terminals IN1 and COM and between terminals IN2 and COM The relationship between on off contact input and output range is shown in Table 3 2 Table 3 2 Contact Input and Output Range 2 Range Switching Contact When Range Switching is Selected Range Range
88. denoted by blank SUM The last two digits of the total before SUM Note Return data when a communication error occurs ARO CR LF SUM Communication status except 0 Example 1 When the turbidity is 3 89 Request command receive data CROC5 r Return data transmit data ARO0000100 3 89127 5 A space code is transmitted by _ 2 Error information excluding E351 and E352 Error information request command receive data CR2C7Cgle SUM The last two digits of the total before SUM Error information read command Return data transmit data AR2 Ck LE SUM Error information 5 hexadecimal L Error information 4 hexadecimal Error information 3 hexadecimal Error information 2 hexadecimal Error information 1 hexadecimal Turbidimeter status information Communication status Error information return status Communication status See Note in case other than 0 0 no communication error 1 parity error 2 framing error 3 overrun error 4 check sum error 5 command error IM 12E01A06 01E 2 SPECIFICATIONS gt 2 3 Turbidimeter status information L Operation status 0 in measurement 1 in cali
89. e Flow Chart CODE 64 Software Version Display Mode The software version number is displayed YES ENT Software version display Display range 0 00 to 9 99 ENT F6 32E ai Figure 6 32 Software Version Display Mode Flow Chart Note This mode is only for displaying the values not user configurable IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 25 CODE 66 2 Level Selection Mode An error level of errors 2 can be selected respectively A changed error level of the error is valid from the next occurrence of the error YES ENT Error levels of E201 to E206 A X 0 Disabled 1 Level 1 2 Level 2 ENT E201 E202 E203 E204 E205 E206 Disabled Error detection function disabled Level 1 Severe error Level 2 Moderate error For details See Chapter 8 Settings for reserved error code E206 is invalid F6 33E ai Figure 6 33 E2xx Error Level Selection Mode Flow Chart CODE 67 E3xx Error Detection Selection Mode The error detection function can be set to enabled or disabled for error E3xx respectively Note that error levels of E321 E351 and E352 are exclusions The error level for error E3xx is fixed to level 3 minor error YES CODE ENT X X X X X X gt E301 to E306 error detection function enabled disabled selection d 301 6 A X0 Disabled or 1 Enabled
90. e Flow Chart IM 12E01A06 01E 6 20 6 PROCEDURES FOR SETTING PARAMETERS CODE 35 Hold During Failure Parameter Setting Mode This mode is activated only when a failure occurs The following three parameters in relation to the analog output hold function when a failure occurs can be set 1 Selecting enabled or disabled for the hold function 2 Selecting the last measured value or a fixed value 3 Setting a fixed value for analog outputs 1 and 2 respectively YES CODE ENT X A Hold function enabled or disabled FHOLD X O Disabled or 1 Enabled i ENT 0 ENT x Last measured value or FH LST FH FIX fixed value YES YES XX X Fixed value for output 1 FH mA1 A Setting range 02 0 to 22 0 mA 1 XX X Fixed value for output 2 FH mA2 A Setting range 02 0 to 22 0 mA 4 20mA ENT or 00 0 to 22 0 mA 0 20mA v 1 The same display as the one in FH mA2 in CODE 33 at service level F6 22E ai Figure 6 22 Hold During Failure Parameter Setting Mode Flow Chart CODE 37 Time Constant Setting Mode If the control action or the like is disturbed by fluctuation of measured value the fluctuation in output signal can be smoothed by setting an appropriated time constant 6396 response time In measurement mode the time constant set in time constant in measurement display is used in maintenance mode the one set in time constan
91. e detector 2 Close the drain valve after the detector When the measurement cell is filled with the water open the drain valve to drain 3 Repeat steps 1 and 2 atleast three times to wash the inside of the measurement cell 5 Supplying the water sample 1 Close the zero water supply valve 2 Open the sample water supply valve to supply the water sample 3 Visually check that the water sample is drained from the drain of the detector Then close the drain valve 6 Performing a grab sample calibration 1 Allow the water sample to flow at least 5 minutes Make sure that the reading has stabilized and the message display shows STD CAL 2 Press the NO key The message display should show SMP CAL Press the YES key to enter the grab sample calibration 3 The message display will show ZERO To perform a zero calibration press the YES key to enter the zero shift calibration zero point correction perform a span calibration sensitivity correction press the NO key The message display should show SPAN Then press the YES key to enter the span calibration 4 The message display should show VALUE 5 Set the decimal point position in the data display using the gt key Press the ENT key to accept the position e g 0 000 when the lab turbidity is 0 85 NTU IM 12E01A06 01E 7 20 8 IM 12E01A06 01E 7 MAINTENANCE 6 Setthe value on the data display to the lab value using the gt
92. e element in the light source unit Scatted Light Detection Element Scatted Light Detector Receiver Darkroom Light Source ens Lamp Measurement Window Glass F1 1E ai Figure 1 1 Measurement Principle IM 12E01A06 01E 1 OVERVIEW 1 3 1 2 Turbidity Standards The turbidity standards are used as reference for adjusting a zero or span point of a turbidity meter 1 2 1 Zero Standard 1 Zero Turbidity Standard Solution Filtered tap water is used as a zero turbidity standard solution for the TB750G turbidimeter For zero calibration tap water should be filtered in two steps first through a 1 um filter and then through a 0 2 um filter If the measuring range exceeds 2 0 NTU tap water filtered only through a 1 um filter can be used Note The instrument has been pre calibrated for zero point using tap water filtered through a 0 2 um filter as a zero turbidity standard solution at the factory before shipment 2 Zero Turbidity Filter The specifications of the zero turbidity filter that can be purchased from Yokogawa is as follows Item 1 um Zero Turbidity Filter 0 2 Zero Turbidity Filter Part number K9411UA K9726EF Piping connection Rc1 2 Rc1 2 Maximum pressure 500 kPa 500 kPa Cartridge material Polypropylene Polypropylene Filter size 1 um 0 2 um Accessory Air vent plug Air vent plug 1 2 2 Turbidity Standards 1 Turbidity Standard Solution A formazin soluti
93. e pointer stops flashing and is lit continuously When the turbidimeter is in a mode at the setting service level an asterisk is indicated to the left of the item in the message display e Flashing Key Indicator This is prompting you to select the desired operation from among the flashing key indicators on the display Press the corresponding key e Flashing Data Display Numeric Character This is asking you whether to change the value of the flashing digit Change the value if necessary and move to another digit using relevant keys To exit from the flashing data display press the ENT key How to Abort the Setting Procedure Press the MODE key Normally the MODE key is used to enter the operation level from measurement mode however it is also used to return to measurement mode from any mode other than measurement mode If the output signal hold function is activated when the MODE key is pressed in any mode other than measurement mode the converter goes into hold selection mode 1 Hold Selection Mode Display 2 Measurement Mode Display SETPOINTS RANGE SET HOLD CAL WASH SERVICE SERVICE In Hold Selection mode message display and YES and NO key In the display shown in 1 pressing YES or NO key will put the indicators are flashing If hold function is currently being set to instrument in measurement mode The display shown above is the Enabled HOLD indicator is lit one when
94. e port To reconnect the cable to the converter reverse the above steps Note Remove all cable glands before inserting the converter into the panel cut opening F3 17E ai IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 11 3 2 Wiring 3 2 1 Wiring Required for the TB750G Wiring for the Converter 1 Analog output wiring 2 Contact input remote range switching wiring 3 Range contact output wiring 4 Contact output 51 52 and FAIL wiring 5 Serial communication wiring 6 Checking wiring to the detector 7 External ground wiring rowan ss Wiring for the Detector 8 Power and ground wiring 9 External ground wiring 10 Power wiring for ultrasonic oscillator when option code US is specified 11 Wiring to ultrasonic transducer when option code US is specified A CAUTION Before opening the front cover of the converter or the detector turn off power to the TB750G turbidimeter Make sure that the turbidimeter is not powered before wiring work Do not touch terminals while the turbidimeter is being powered The TB750G turbidimeter does not have an internal power switch Be sure to provide a switch double pole type compliant with IEC 60947 1 and IEC 60947 3 in the power line as close to the instrument as possible The on and off symbols should be indicated near the switch if they are not indicated on the switch Converter Detector UT
95. e sample surface or disappear within a short time in a few seconds In practice first set the Hold Time to a shorter time and then increase it if the function does not work satisfactorily c Sampling Time After the Hold Time has elapsed the turbidimeter gives readings without any processing for a specified Sampling Time to verify that no fluctuation occurs in turbidity readings The time count begins after the Hold Time It is unlikely that air bubbles or dust occur consecutively Therefore the Sampling Time may not need to be too short If the Sampling Time is set too short the response is delayed when a sudden change in turbidity actually occurs First set the Sampling Time slightly longer If something is wrong with the behavior shorten the time Instructions for Use Be careful when using the function since the following restrictions apply 1 Thefunction works only in measurement mode As soon as the mode is changed the Hold or Sampling timer is reset and the function stops 2 During a Hold Time period both turbidity readings including communication data and analog outputs are held 3 The function does not run for approximately 5 seconds right after the turbidimeter is turned on 4 Ifthe turbidimeter is turned off then on again while the function is running the timer is reset IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 15 CODE 11 Zero Calibration Factor Display Mode Zero calibration factor A calc
96. e that these mounting brackets are supplied only when specified B Pipe Mounting Option Code U Converter Unit mm 132 Mounting pipe Nominal 50A 260 5 OD 6 LI 4 H Q Note Dedicated cable is omitted F3 1E ai Detector Unit mm Mounting pipe Nominal 50A Sample water 260 5 OD outlet 84 Rc1 2 or 1 2NPT 59 Q 1 2 1 4 4 ER H4 i 1 Se Ed 1 _ Y n Lh j u ni M Et uv qo TT TE 9 ak E 9 E cd 3 i e E 90 url BSS Sera Te CER Yo at i Ej bts H d HP iid 4 jit 4 E i 2 113 102 gt lt Sample water inlet Rc1 2 or 1 2NPT Drain Rc1 or 1NPT Note Dedicated cable is omitted F3 2E ai IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 3 m Rack Wall Mounting Option Code R Converter Detector 160 for fixing hole 2 06 fixing holes Note Dedicated cable is omitted Sample water Unit mm F3 3E ai Unit mm outlet Rc1 2 or 1 2NPT 174 100 for fixing hole ixing Sample water inlet Rc1
97. e value is displayed in CODE 11 at service level Measuring signal IN1 IN2 Ratio of transmitted light signal IN1 to front scattered light signal IN2 Turbidity after zero and sensitivity corrections Sensitivity correction factor Determined in span calibration using the water sample The value can be displayed and changed in CODE 14 at service level Zero correction factor Determined in zero calibration using the water sample The value can be displayed and changed in CODE 13 at service level IM 12E01A06 01E 6 4 6 PROCEDURES FOR SETTING PARAMETERS 2 DISPLAY Mode DISP In this mode a display item on the message display during measurement can be selected Each press of the NO key cycles through the following three items 1 XX XmA1 Output current of analog output 1 2 XX XmA2 Output current of analog output 2 3 RNGX YY Switchable analog output range When the desired item is shown press the YES key to accept it The display moves to measurement mode or hold selection mode The default is the output current of analog output 1 YES gt 1 YES Analog output 1 current selection display XX X Displays present current of analog output 1 NO Display range 2 4 to 21 6 mA YES Analog output 2 current selection display XX XmA2 XX X Displays present current of analog output 2 NO Display range 2 4 to 21 6 mA 0 20 mA signal range 1 0 0 to 22 0 mA 4 20 mA signal range
98. early Desiccant 4 pcs 3 K9657RJ Yearly 1 Recommended intervals vary depending on the application 2 If an expired lamp life error E203 or lamp intensity failure E204 occurs determine the cause and if necessary replace the lamp with a new one 3 Use within a year after purchasing IM 12E01A06 01E 8 TROUBLESHOOTING 8 1 8 8 1 TROUBLESHOOTING When a failure occurs in the converter or the detector self diagnostics detects it the FAIL lamp turns on and the FAIL indicator turns on and the error number appears on the display signaling that the problem is occurring From the error number details of the error can be known Inspect the instrument according to the instructions in Section 8 1 Improper readings may occur that cannot be checked by self diagnostics If such a failure occurs but the FAIL lamp does not turn on inspect the instrument according to the instructions in Section 8 2 For inspections a multimeter or tester that can measure DC AC voltage DC current and resistance are required After the inspection if part replacement or repair is needed or if the cause of the problem cannot be located contact Yokogawa When a Failure Occurs and the FAIL Lamp Turns On When the FAIL lamp turns on during measurement check the error number on the display and take the procedure corresponding to the number for troubleshooting The error numbers and their descriptions are listed in Table 8 4 Depending
99. ector outlet should be controlled to prevent air bubbles from occurring For this gradually close the valve at the sample water outlet of the detector until the pressure gauge at the tops of the pressurized head tank approximates the pressure of the water sample and until the rate of flow from the sample water outlet of the detector is in the range of 0 05 to 10 I min Check the pressure gauge at the top of the pressurized head tank The gauge must read under 500 kPa System without a Head Tank See Flow Diagram in Figure 3 25 1 With the valve at the sample water outlet of the detector opened completely open the sample water valve immediately after the sampling point in the sample line Open the sample water supply valve to supply a water sample to the detector Adjust the opening of the valve at the sample water out of the detector until the rate of flow from the sample water outlet of the detector is in the range of 0 05 to 20 l min Pressure changes in the line between the sampling point and the detector outlet should be controlled to prevent air bubbles from occurring For this gradually close the needle valve at the sample water outlet of the detector until the rate of flow from the sample water outlet of the detector is in the range of 0 05 to 20 l min Before taking this procedure make sure that the sample water pressure of the process is under 500 kPa Operation Check After supplying the water sample and adjusting its flow r
100. ee piping methods in accordance with the system configuration 1 A system using an open head tank 2 Asystem using a pressurized head tank 3 A system without a head tank Depending on the application select the appropriate system configuration and install pipes accordingly following the procedure described below 3 3 4 System Using an Open Head Tank This is a typical system and the piping diagram is shown in Figure 3 20 Air bubbles in a water sample are removed by an open head tank and the water sample is introduced into the detector at a stable flow rate Calibration and maintenance such as measurement cell cleaning are efficiently performed by valve operation Head Tank Flow Control Valve gt Sample Water Effluent Sample Water Sample Water TB750G Drain Detector Sample Water Drain Y Valve Valve 4 Sample Water Sample Water Drain Port AT Inlet Sample Water Supply Valve Zero Water PRY gt A Drain Valve Zero Water Supply Valve Y Zero Water ___ b 1 Drain Valve Jx p Other Turbidity Detectors Zero Turbidity Filter L Dq F3 29E ai Figure 3 20 Piping Diagram 1 Piping of the Sample Line to the Detector This piping is for introducing a water sample into the measurement cell of the detector Install a head tank valves and pipes by referring to the diagram in Figure 3 20 1 Forthe piping to a head tank use a hose tube
101. eeeeseeeeeneeeneeeeeseeeeenenes 4 8 4 3 1 SNUG OWM tiere fnerint ete Pedale dte aa a aste 4 8 4 3 2 acc m 4 8 lt 0 lt 20 5 1 5 1 Outline 5 1 5 1 1 Operation Setting and Service Levels 5 1 5 1 2 Key Operations sess enne 5 2 5 1 3 Password aa i d e a E Ee Enna 5 3 5 2 Key Operation Procedures nennen nennen nns 5 3 5 2 1 Operation 44 44 10000 5 3 5 2 2 Panel Display upon Power 5 5 5 2 3 Basic Key Operations essen 5 6 5 3 Setting Parameter List ccccscescsseseeeseeeseeeseeeseeeeeeeseeeseeeseeeseeeseeesneeseeeseeneees 5 8 5 3 1 Setting Parameters at the Operation Level 5 8 5 3 2 Setting Parameters at the Setting 5 9 5 3 3 Setting Parameters at the Service Level 5 10 6 PROCEDURES FOR SETTING 6 1 6 1 Parameter Setting at the Operation 6 1 6 2 Pa
102. element should be replaced at regular intervals TS Make sure that the zero water supply valve and the zero water drain valve after the zero turbidity filter are closed Close the tap water valve before the zero turbidity filter to stop supplying tap water Turn and remove the filter case Care should be taken The internal water runs over If the inside of the case is dirty clean it with a brush or relevant tool Replace the filter element with a new one Reassemble the filter Be sure to install the O ring in place otherwise water may leak Open the tap water valve before the zero turbidity filter to supply tap water and open the zero water drain valve after the filter to supply zero water Check for leak Loosen the air vent valve on top of the zero turbidity filter until the tap water begins to leak out After the air vent tighten the valve securely Allow the water to flow for at least 20 minutes to wet the filter element Close the zero water drain valve after the zero turbidity filter Replacement is now complete Note If the zero turbidity filter is not to be used for a prolonged time remove dry and store the filter element in a dry place Do not mix up two different sizes 1 um and 0 2 of the zero turbidity filter element if installing two zero turbidity filters Air Vent O Ring Turn and Remove F7 12E ai Figure 7 12 Replacement of the Zero Turbidity Filter Element IM 12E01A06
103. epeatability 1 of reading or 0 002 NTU whichever is greater Display resolution 0 001 NTU Easy to clean measurement cell Compact lightweight converter and detector Userconfigurable analog output range Analog output range 0 0 2 NTU to 0 100 NTU Analog output range switching 2 or 3 ranges Enhanced self diagnostic function as standard Light source failure input element failure calibration failure various circuit failures etc Detector designed to remove influence of air bubbles Awide range of measurement conditions Low flow rate 0 05 to 20 l min High pressure Up to 500 kPa Sample temperature 0 to 50 C Detector can be connected for in line analysis 2analog outputs relay contact outputs and 1 serial communication Many options available Ultrasonic transducer and oscillator for ultrasonic cleaning Various head tanks to accommodate application requirements IM 12E01A06 01E 1 2 1 OVERVIEW 11 Measurement Principle The measuring system of the TB750G turbidimeter comprised of a detector and a converter employs the right angle light scattering method This section describes the structure of the measuring system and the measurement principle The detector is comprised of a measurement cell a light source unit and a sensing unit A water sample flows upward through the measurement cell it flows into the cell from the bottom and flows out from the top A tungsten lamp enclosed in the l
104. ervice Upon power up the turbidimeter enters the normal measurement state measurement mode and the pointer on the display indicates lt MEASURE gt The transition between measurement mode and three levels is outlined in Figure 5 1 Measurement Mode MEASURE For at least second MODE MODE MODE Operation Level SERVICE Setting Level Service Level F5 1E ai Figure 5 1 Transition between Measurement Mode and Three Levels Operation Level This is the level where basically operations regarding routine inspections and maintenance such as calibration and manual cleaning can be done Also the desired display item on the message display can be selected at this operation level Setting Level There are modes where parameters regarding output signals and contact outputs can be set Service Level The TB750G turbidimeter has various functions At this level there are modes where functions can be selected according to need for the operation IM 12E01A06 01E 5 2 5 CONVERTER OPERATION 5 1 2 Key Operations The TB750G offers interactive key operations through indications on the data and message displays pointer positions mode selection and key indicators on the converter s front display For basic key operations see Section 5 2 Interactive Display e Flashing Pointer This is asking you whether to enter the mode the flashing pointer is indicating Once you enter the mode th
105. esponse time Within 2 minutes 9096 response sample water flow rate 3 l min 2 3 Optional Specifications Head tank Simple head tank Application Turbidity is 10 NTU or less To remove relatively large air bubbles Sample water conditions Flow rate 1 to 10 l min Turbidity 2to 10 NTU Pressurized head tank for low turbidity Application Turbidity is 2 NTU or less To remove air bubbles and to prevent them from occurring Sample water conditions Flow rate 0 05 to 10 l min Turbidity 2 NTU or less Pressure 20 to 500 kPa IM 12E01A06 01E 2 SPECIFICATIONS gt 24 2 4 1 Transducer for ultrasonic cleaning TUS400G Ultrasonic Oscillator should be purchased separately Zero turbidity filter When measuring range is 2 0 NTU or greater 1 um When measuring range is below 2 0 NTU 1 um 0 2 um Model and Codes TB750G Right Angle Scattered Light Turbidimeter Suffix code Description TB750G Turbidity standard Right angle scattered light turbidimeter Formazin 0 0 2 NTU to 0 100 NTU and measuring range Application Standard Output 4 to 20 mADC RS 422 4 to 20 mA DC RS 232C Sampling system Without sampling system Sampling system material and Without sampling system mounting Cable length between converter and 1m detector 2m 3m Always Option Detector process
106. et to Disabled H OFF in SET HOLD mode at the setting level steps 2 and 3 cannot be done If analog output should be held during maintenance select Enabled H ON The factory default is Enabled H ON 2 Remove the rubber cover from the top of the detector and visually check the measurement cell from the observation window for sediment Rubber Cover Observation Window F7 1E ai Figure 7 1 Top of the Detector 3 If sediment is visible open the drain valve after the detector to drain the water sample from the measurement cell 4 Close the drain valve 5 Repeat steps 3 and 4 at least three times depending on the degree of sediment 6 Visually check from the observation window that the measurement cell is filled with the water sample Attach the rubber cover to the top of the detector 7 Putting the converter in measurement mode 1 Press the MODE key on the converter Check that the message display shows CALB 2 Press the NO key repeatedly until HOLD appears on the message display Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the NO key to exit from the maintenance state analog hold is held and return to measurement mode The HOLD indicator turns off 8 Sediment removal is now complete IM 12E01A06 01E 7 3 lt 7 MAINTENANCE gt 7 3 Washing the Measurement Cell The measurement cell and window should be washed wi
107. eter Setting at the Operation Level There are calibration alarm setup and other operation modes at the operation level 1 CAL mode Calibration CALIB 2 DISPLAY mode Message display selection DISP 3 SETPOINTS mode Alarm setting SETP 4 HOLD mode Hold selection HOLD This section describes the operating procedures for the above four modes at the operation level Measurement lt mode MODE YES YES r CALIB Calibration mode HOLD NO YES YES DISP Message display selection mode gt 4 INO YES YES SETP Alarm setting mode HOLD 2 NO 3 YES YES HOLD Hold selection mode gt 1 Skipped if alarm setting function is set to 0 Disabled in Code 51 at service level or unless either of functions of contact output S1 or S2 is set to 1 Alarm in Code 40 or 41 at service level 2 Skipped if hold function is set to H OFF Disabled in SET HOLD mode at setting level 3 If YES key is pressed analog output is held in measurement mode Figure 6 1 Operation Level Flow Chart IM 12E01A06 01E 6 2 6 PROCEDURES FOR SETTING PARAMETERS 1 CAL Mode CALIB As for the calibration mode also refer to Sections 7 6 and 7 7 NO Self adjustment or ENT 6 Self adjustment or ENT 6 X XXX CAL END Self adjustment V ENT 6 Self adjustment or ENT 6 Self adjustment
108. etup prompt screen S TB L SETPOINTS SETPOINTS RANGE CAL RANGE SET HOLD CAL WASH SERVICE SERVICE Display in step 3 HOLD indicator depends on setting Display when ENT is pressed in step 4 S TB L appears on message display and the leftmost digit of data display flashes prompting data entry HOLD indicator depends on setting F5 10E ai Figure 5 9 Examples of Data Entry Displays 4 Moving a Decimal Point A decimal point can be moved in the significant digit of 4 X XXX to XXXX or of 6 X XXXXX to XXXXXX using the gt key This is available only in CALIB mode at the operation level setting a turbidity value CODE 11 at the service level setting a zero calibration factor CODE 17 at the service level setting a turbidity value of the check block and CODE 18 at the service level setting a turbidity value in the reference sensitivity calibration Procedure In Case of the Significant Digit of 6 1 Determining the decimal point The first display should show 0 00000 with the decimal point flashing Move the flashing decimal point using the Upon each press of the gt key the indication will change 0 00000 gt 00 0000 000 000 0000 00 gt 00000 0 000000 no decimal point and return to 0 00000 When the desired indication is shown press the ENT key to accept Setting the value Note that if the gt key is pressed when
109. g to the piping connection of the zero turbidity filter and connect an hose tube that can withstand the pressure of tap water such as a rigid PVC tube The flow rate of zero water supply should be in the range of 1 to 3 l min Forthe specifications of the zero turbidity filter see Section 1 2 To prevent corrosion of water inside the zero turbidity filter allow water to flow through the filter and flow out from the zero water drain valve continuously at a flow rate of approximately 10 ml min 3 INSTALLATION PIPING AND WIRING 3 31 3 3 8 System without a Head Tank This is a simple system where a water sample is taken from the process and directly introduced into the detector This system configuration can be used when a water sample contains a negligible amount of air bubbles or when the turbidity of a water sample is high and the effect of air bubbles is nonsignificant By installing a throttle at the detector outlet side it is possible to prevent pressure change and thus air bubbles from occurring in the piping from a sampling point to the detector outlet A CAUTION Sample water conditions and ambient temperature must meet the specifications maximum pressure 500 kPa sample temperature 0 to 50 ambient temperature 5 to 50 Any failure to meet the specifications may damage the detector or other instruments When the sample pressure is reduced by using a pressure reducing valve or by other means air bubbles m
110. ge board failure may have occurred Request repair service IM 12E01A06 01E 8 TROUBLESHOOTING 8 5 13 E307 Turbidity response time failure Check Possible Cause and Action detector Check for reading change Supply calibration solution to measurement cell in If calibration is started while reading is changing sharply the error may occur gt After reading has stabilized perform calibration After the lamp has been replaced allow the instrument to undergo a shakedown period of at least one hour and then perform zero and span calibrations 8 2 When a Failure Occurs but the FAIL Lamp Does Not Turn On When a reading failure occurs that self diagnostics cannot detect inspect the instrument while referring to Table 8 3 Table 8 3 Troubleshooting Problem Possible Cause Check Corrective Action Large fluctuation of turbidity reading Property of turbidity matter in a water sample Increase time constant Rapid change in turbidity reading Air bubbles Close the valve at detector outlet to reduce the flow rate Increase time constant Set the spike detection function to Enabled in CODE 08 Drift of turbidity reading Stained measurement cell Air bubbles on glass window Condensation on glass window Wash glass window and measurement cell Ultrasonic cleaning is also effective measure Air bubble si
111. gnificantly affects measurement when sample water turbidity is 2 NTU orless To prevent air bubbles from forming on glass clean glass surface Reduce flow rate by closing valve at detector outlet Wet desiccant may cause condensation Check desiccant and replace it IM 12E01A06 01E 8 6 8 TROUBLESHOOTING 8 3 Error Code List Table 8 4 Error Code List 1 2 No Error Occurrence Problem Return E101 memory When power is SUM results of flash memory do not match When power is failure turned on programmed SUM values 5 consecutive turned off and times then on again E102 EEPROM write All modes Data is written in EEPROM and verified and 209 problem is failure write failure occurs 3 consecutive times eliminated Without YES NO key E103 RAM failure When RAM area failure 3 consecutive times press turned on E104 AD converter All modes AD converter failure 3 consecutive times failure E201 Input voltage All modes Either IN1 or IN2 input voltage is outside When problem failure the range of 0 15 to 1 2 V fixed including is eliminated for abnormal value Ox7FFF or 8000 for 5 5 consecutive consecutive seconds seconds When E202 Detection All modes Either IN1 or IN2 input voltage is less than YES No Key is d element failure specified voltage for 5 consecutive seconds pressed enor coge display disappears E203 L
112. he turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 5 After the self adjustment is complete the message display will show CAL END Removing the check block 1 Open the drain valve of the detector to drain zero water 2 Remove the check block by loosening the 2 setscrews 3 Replace the observation window and fix the retaining plate with the 2 setscrews securely 4 Replace the rubber cover to the top of the detector Open the sample water supply valve to supply the water sample to the detector Putting the converter in measurement mode 1 When CAL END is shown on the message display press the YES key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level a HOLD display in step 2 is not shown 10 Span calibration is now complete How to Clean the Check Block Dust and dirt on the check block should be removed as follows Take the following steps to wash the check block with mild detergent 1 Dissolve an adequate amount of mild detergent in tap water 2 Soak and shake the check block in the solution to remove di
113. icated on the switch Cable Required Use a 3 conductor cable with a nominal size of at least 2 mm and a finished outside diameter of 6 to 12 mm or 2 conductor shielded cable The cable performance should also be equivalent to or exceeds that of a 600 V vinyl insulated wire JIS C3307 Procedure 1 Terminating the cable Strip off approximately 40 mm of insulation from the end of the cable Terminate the ends of each conductor with crimp terminals corresponding to the M4 screw 2 Connecting the cable to the detector Remove the terminal cover Connect each conductor to terminals L N and G on the detector Replace the terminal cover To run the cable through the cable gland remove the assembled parts from the cable gland body at cable inlet port G and then slide these parts over the cable in order 3 Fixing the cable Adjust the cable length housed in the detector and fix the cable by mounting the parts to the cable gland body 4 Grounding The grounding wire G of the cable should be grounded at the power supply side with JIS Class D grounding ground resistance 1000 or less IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 21 3 2 10 External Ground Wiring for the Converter 3 2 11 The grounding terminal of the converter is located at the bottom of the back side as shown in Figure 3 18 Ground the terminal with JIS Class D grounding ground resistance 100 or less using a wire with a nominal size
114. ied with the TUS400G Ultrasonic Oscillator Procedure 1 Remove the cover of the light source unit located on the left side of the TB750G detector 2 Remove the cover for the terminals for ultrasonic transducer and connect the cable to terminals conductor U1 to terminal U1 and conductors U2 and U3 to terminal U2 Replace the terminal cover To run the cable through the cable gland remove the assembled parts from the cable gland body at cable inlet port J and then slide these parts over the cable in order 3 Fix the cable Adjust the cable length housed in the detector and fix the cable by mounting the parts to the cable gland body 4 Connect the other end of the cable to terminals U1 U2 U3 and S on the TUS400G For details see the TUS400G User s Manual IM 19C1B4 01E Note If using an ultrasonic oscillator already installed take the following procedure terminate the turbidimeter end of the dedicated cable before wiring 1 Cut off and remove the covering tube at the turbidimeter end of the dedicated cable 2 Strip off approximately 100 mm of the insulation and the shield from the end of the removed covering tube Note When TB750G US TUS400G Application NN or RC is specified noise filter assembly is inserted to power line of TUS400G For details of wiring see the TUS400G User s Manual IM 19C1B4 01E IM 12E01A06 01E 3 24 3 INSTALLATION PIPING AND WIRING 3 3 Piping There are thr
115. ight source unit sends light through a lens to the water in the measurement cell The incident light passes through the water and the transmitted light reaches a receiver which is located on the opposite side of the light source unit and is absorbed in a darkroom equivalent to a black body The incident light is also scattered by turbidity particles in the water sample The intensity of this scattered light L is proportional to the turbidity as shown below 5 Where K aturbidity derived constant Q the amount of lamp light S the turbidity A turbidity element a silicon photodiode in the sensing unit detects light scattered at a right angle to the incident light beam and sends the output signal to the converter A reference element incorporated in the light source unit measures the amount of lamp light Q and sends the detection signal to the converter The measuring circuit of the converter is housed together with an operation panel and a terminal block for external wiring in a sealed aluminum alloy enclosure The circuit amplifies the input voltage from the sensing unit calculates displays the turbidity and sends the analog output signal 4 20 mA DC corresponding to the measuring range and the serial communication data Either of 4 20 mA DC or 0 20 mA DC can be selected for analog output 2 The turbidity reading and output signal are corrected for the change of the amount of lamp light based on the input from the referenc
116. ils see Figure 6 35 1 2 Check that the message display shows either A01 T analog output 1 or A02 T analog output 2 Press the NO key to toggle the options and when the desired option is shown press the YES key The current value displayed on the data display will be output to the analog output terminal For example 02 4 on the data display means that a 2 4 mA current is output to analog output terminal Connect a tester or relevant equipment to the analog output terminal and check the output with it The tester must read the same value as the one on display Each press of the ENT key will change the current value Check the reading each time with the tester The message display will show END when the test is completed To continue the test to check the other analog output press the NO key and repeat steps 1 through 5 To exit from the test mode press the YES key Putting the converter in measurement mode 1 2 Check that the message display shows SERV Press the MODE key The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode atthe setting level a HOLD display in step 2 is not shown Test is now complete If the test finds a defect the converter needs adjustment or remedy Contact our Servi
117. in the turbidimeter will not disappear when power fails After power is returned the turbidimeter will recover to the measurement state Note that the depending on how long the power outage has lasted it takes approximately one hour for the detector to stabilize after power has been returned The output signals during that period may not represent turbidity values correctly Give attention to this if the turbidimeter is used for control Operation Shutdown and Restart Shutdown The parameter settings and other information set in the turbidimeter are retained even if power is turned off If the instrument will be out of operation for a long period power should be removed Dirt or stains on the instrument should be washed off thoroughly when the turbidimeter is to be removed from the site Rinse the inside of the measurement cell and then empty the cell or keep zero water running through the cell Restart When power is returned the turbidimeter is put into the measurement state It requires at least one hour for warm up upon power up After warm up check that the reading stabilizes well and then perform calibration IM 12E01A06 01E 5 CONVERTER OPERATION 5 1 5 CONVERTER OPERATION This chapter describes how to operate the converter to set various parameters 5 1 Outline 5 1 1 Operation Setting and Service Levels Parameters should be set in the relevant mode that is classified into three levels operation setting and s
118. ing F2 6E ai IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 1 3 INSTALLATION PIPING AND WIRING 3 1 Installation 3 1 4 Unpacking The TB750G turbidimeter has been carefully packed and then shipped to prevent damage during transportation Upon receipt of the instrument unpack with care 3 1 2 Installation Location The TB750G turbidimeter should be installed in a location thatis protected from direct sunlight and rain i e the instrument should be installed indoors or in a cubicle thatis subject to minimal mechanical vibration where no corrosive gases are present thatis not exposed to high temperature and humidity The temperature should be in the range of 5 to 50 preferably at or around normal temperatures and its fluctuation small The humidity should be kept between 10 to 90 RH Prevent condensation which may occur if the sample temperature is lower than the ambient temperature Also take protective measures to prevent a sample water and the tap water from freezing if necessary that provides adequate maintenance space and easy access for maintenance work where the drain is provided and where the converter can be installed in the vicinity of the detector IM 12E01A06 01E 3 2 3 INSTALLATION PIPING AND WIRING 3 1 3 Installation Dimensions Install the TB750G s converter and detector in pipes racks or walls using their special mounting brackets respectively Not
119. ing Th For the piping between the sample water and the detector connect a supply valve to one end of the 3 way tee fitting and connect a hose tube that can withstand the flow and the pressure of a water sample between two valves using fittings corresponding to the connection sizes of each valve To prevent clogging or stagnation of air bubbles in the pipe line install the pipes so that no bends or stagnation occurs of the Sample Line from the Detector is piping is for draining a water sample from the measurement cell of the detector during measurement As shown in Figure 3 25 connect a needle valve to the sample water outlet of the de tector By adjusting the opening of this needle valve the pressure change in the piping between the sampling point and the detector outlet is controlled and thus the generation of air bubbles is prevented 1 2 To the sample water outlet of the detector connect a fitting such as an elbow fitting corresponding to the connection size Rc1 2 or 1 2 NPT female and a needle valve To the outlet of the needle valve connect a fitting corresponding to the valve connection size and a hose tube that can withstand the flow and the pressure of a water sample Route this hose tube to a drain pipe As shown in Figure 3 25 the water sample from the detector should be discharged to the atmosphere at a point higher than the measurement cell of the detector If no a siphon may be created and the me
120. ing mode operation level Alarm setting mode setting level Contact output 51 function selection mode service level CODE 40 Contact output S2 function selection mode service level CODE 41 Delay time hysteresis setting mode service level CODE 44 Alarm setting function selection mode service level CODE 51 Other Functions Spike detection parameter setting mode service level CODE 08 Time constant setting mode service level CODE 37 Auto return function selection mode Service level CODE 50 IM 12E01A06 01E 4 OPERATION 4 3 4 1 5 Zero and Span Calibrations Using Filtered Water as Zero Reference When warm up with zero water flowing is completed and after the turbidity reading stabilizes calibration should be performed Zero Calibration 1 Putting the converter into calibration mode maintenance state 1 Press the MODE key on the converter 2 Check that CALIB is shown on the message display Then press the YES key to enter calibration mode 2 Performing a zero calibration 1 Check that the reading stabilizes Then close the zero water supply valve at the sample water inlet of the detector 2 Check that STD CAL is shown on the message display Then press the YES key to enter the calibration using standards 3 The message display will show ZERO Press the YES key to enter the zero calibration 4 The message display will show VALUE Check that the data display shows 0 000 and then
121. ing plate on the window of the top cover by loosening the 2 setscrews IM 12E01A06 01E 7 12 7 MAINTENANCE Rubber cover Setscrews 2 Retaining plate Observation window F7 8E ai Figure 7 8 Top of the Detector 4 Detach the observation window and replace it with the check block Fix it with the 2 setscrews securely Check Block Setscrews 2 F7 9E ai Figure 7 9 Check Block IM 12E01A06 01E 5 7 MAINTENANCE 7 13 Introducing zero water 1 Open the zero water supply valve 2 By adjusting the zero water supply valve supply the zero water to the detector at a flow rate of 1 to 3 l min 3 Check that the zero water is drained from the detector Close the drain valve 4 To wet the zero turbidity filter allow the zero water to run at a flow rate of 1 to 3 l min for approximately 20 minutes If the filter has been already wet allow the zero water of approximately 10 liters to run Performing a span calibration 1 Check that the reading stabilizes Then close the zero water supply valve Check that STD CAL is shown on the message display Press the YES key to enter the calibration 2 The message display will show ZERO Press the NO key The display will show SPAN and then press the YES key to enter the span calibration 3 The message display will show VALUE Check that the data display reads the same value as the one described on the check block and press the ENT key 4 T
122. inthe operation level when the MODE key is pressed in measurement mode inthe setting level when the key is pressed inthe service level when the YES key is pressed with SERV shown on the display See Section 5 1 3 IM 12E01A06 01E 6 24 6 PROCEDURES FOR SETTING PARAMETERS CODE 54 Negative Nondisplay Nonoutput Selection Mode Whether the negative nondisplay and or negative nonoutput functions are enabled or disabled can be selected If the negative nondisplay function is enabled a negative turbidity reading will be hidden and a fixed 0 will be shown instead on both data and message displays This function does not affect the analog output a negative output value will be shown If the negative nonoutput function is enabled a value of analog output 1 or 2 will be fixed at 0 when it goes negative This function does not affect the reading a negative reading will be shown YES ENT gt Negative nondisplay nonoutput enabled or disabled MINUS 1 X 0 Disabled or 1 Enabled ENT X X Negative nondisplay Negative nonoutput F6 30E ai Figure 6 30 Negative Nondisplay Nonoutput Selection Mode Flow Chart CODE 61 Turbidity Unit Selection Mode A turbidity unit lamp indication on the front panel can be selected from among NTU FNU or mg l YES ENT A Turbidity unit X O NTU 1 FNU 2 mg l ENT F6 31E ai Figure 6 31 Turbidity Unit Selection Mod
123. ion status except 0 Example 2 When E205 and E301 errors are occurring Request command receive data 2 7 Return data transmit data AR201010200000010000100000000AB s e 3 Output range switching Output switching request command receive data CWO C 5 Cp L SUM The last two digits of the total before SUM Switching range selection 0 range A 1 range B 2 range C Analog output selection 0 analog output 1 1 analog output 2 Output range switching command Ir Return data transmit data AWO Cg LE SUM Turbidimeter status information Communication status Range switching request return status Communication status See Note in case other than 0 0 no communication error 1 parity error 2 framing error 3 overrun error 4 check sum error 5 command error Turbidimeter status information L Operation status 0 in measurement 1 in calibration 2 in maintenance excluding calibration Range status output range 2 0 fixed range 1 range A 2 range B 3 range Range status output range 1 0 fixed range 1 range A 2 range B 3 range Alarm generation 0 no alarm 1 alarm generated Error generation 0 no error 1 error generated SUM The last two digits of the total before SUM Note Return data when a communication error occurs AWO Cg LE
124. it returns from any level to measurement mode with the exception of DISPLAY mode IM 12E01A06 01E 6 6 6 PROCEDURES FOR SETTING PARAMETERS 6 2 Parameter Setting at the Setting Level At the setting level parameters for output range or other settings can be configured The function at this setting level will operate based on its set parameters when the function is set to enabled at the service level Pay attention to the relationship between the mode at the setting level and the related mode at the service level 52 mode For atleast second 1 YES gt SETP SETPOINTS Mode NO ES ranae sace NO YES HOLD SET HOLD Mode 3 YES NO 1 Skipped unless either of functions of contact output S1 or S2 is set to 1 Alarm in Code 40 or 41 at service level 2 Skipped if hold function is set to H OFF Disabled in SET HOLD mode at setting level 3 For service level see Section 6 3 F6 5E ai Figure 6 5 Setting Level Flow Chart There are three setting modes at the setting level 1 SETPOINTS mode Alarm setting SETP 2 RANGE mode Analog output range setting C RANGE 3 SET HOLD mode Hold parameter setting HOLD This section describes the operating procedures for the above three modes at the setting level in order of mode switching sequence IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 7 1 SETPOINTS Mode SETP
125. ith an outside diameter of 6 to 12 mm is attached to each cable inlet port Run each cable through the specified ports as shown in Figures 3 11 and 3 12 Unused cable inlet ports if any should be plugged to prevent dust or foreign matter from entering piene A B C For Converter Detector Cable B For Contact Output 51 S2 FAIL D E F C For Serial Communication D For Contact Input E For Analog Output LJ LJ F For Range Switching Contact Output External Grounding Terminal M4 Screw ES 20E 3i Figure 3 11 Cable Inlet Ports of the Converter G For Power Supply H For Power Cable to Ultrasonic Oscillator J For Cable to Ultrasonic Transducer K For Converter Detector Cable F3 21E ai Figure 3 12 Cable Inlet Ports of the Detector When conduits are used to protect cables use adapters six pieces are supplied when option code IAFTG is specified Remove cable glands from cable inlet ports C D E and and attach adapters and cable glands as shown in Figure 3 13 No conduit work is done with cable inlet port A a port for a cable connecting the converter and the detector Use the cable glands originally attached to the port Unit mm Packing Approx 55 G1 2 AFTG or 1 2NPT ANSI F3 22E ai Figure 3 13 Conduit Adapter IM 12E01A0
126. itialized to the defaults To execute enter a password of 709 The factory defaults are provided in an Operation Parameter Setting List at the end of this manual YES CODE ENT gt Enter 709 A 4 ENT Initialization NO ad fF 11YESI Default loading WAIT 1 LOAD will appear only if correct password is entered Otherwise the display will return to SERV 2 Pressing YES key on LOAD display will start initialization to the defaults and WAIT is shown during the process After completion the display will automatically return to SERV F6 38E ai Figure 6 38 Initialization Mode Flow Chart IM 12E01A06 01E 7 1 7 MAINTENANCE T 7 1 MAINTENANCE This chapter describes the inspection and maintenance required to keep the instrument in good operating condition Inspection Maintenance Items and Intervals The main inspection maintenance items and their recommended intervals to keep the instrument in good operating condition are provided in Table 7 1 Since the frequency of inspection maintenance depends on the operating conditions use the recommended intervals shown in Table 7 1 as a reference and perform inspection maintenance at appropriate intervals Table 7 1 Inspection Maintenance Item Recommended Interval Removal of sediment from measurement cell Washing of measurement cell Washing of head tank Lamp replacement Calibration using turbidi
127. k for a specified Sampling Time period and gives turbidity readings and 8 afterthe Sampling Time has elapsed performs the Limit Value check again Instructions for Use The spike detection function is effective in processes where turbidity changes are relatively small under normal conditions but it may not be suitable for processes where sudden changes occur often Even if sudden changes do not usually occur this function may be activated and may cause a delay in the response of the reading or output if stepwise turbidity changes occur occasionally Therefore before using this function carefully consider the process conditions and in order to use it properly determine optimum setpoints for the operating conditions while changing them little by little When using the function pay attention to the following 1 Adjust the Limit Value according to the degree of reading change due to air bubbles or dust 2 Ifan excessively long Hold Time is set the turbidimeter may not be able to detect a change in reading that may have occurred and should have been recognized as a real change 3 Ifthe function is responsible for the delay in the response of the turbidity reading try setting the Sampling Time longer without changing the Hold Time 4 When an abnormal turbidity reading is suspected turn off the function once and wait for a while and see The function may have prevented the turbidimeter from giving readings properly No turbidi
128. led gt Replace the zero filter element Perform a zero calibration If turbidity is normal check measurement cell window for dirt Dirt or air bubbles on window may interfere with accurate measurement Wash window with detergent Perform a zero calibration Remove front cover of detector Measure lamp voltage at terminal TM3 The voltage must be 3 5 0 1 VDC If lamp voltage is within the range lamp intensity may have reduced Replace with spare If lamp voltage is outside the range board failure may have occurred Request repair service IM 12E01A06 01E 8 TROUBLESHOOTING 9 E303 Turbidity check block failure Check Possible Cause and Action Check if value on check block agrees with value in Improper setting of the value on check block causes CODE 17 calibration error Enter the correct value Check the check block for scratch or dirt Scratches interfere with correct calibration gt Contact Yokogawa Dirt interferes with correct calibration gt Wash off with water or using mild detergent Check cell window for dirt Dirt or air bubbles on the window causes measurement error gt Wash window with detergent Recalibrate Remove front cover of detector Measure If lamp voltage is within the range lamp lamp voltage at terminal TM3 The voltage must be 3 5 intensity may have reduced 0 1 VDC gt Replace wi
129. ly Table 3 3 Contact Rating AC DC Contact maximum permissible voltage 250V 30V Contact maximum permissible current 2A 3A Contact maximum permissible power resistance load 125 VA 60W Table 3 4 Contact Operation Contact S1 S2 Contact FAIL Status LED NO NC LED NO NC In action ON Closed Open ON Open Closed Not in action OFF Open Closed OFF Closed Open Power OFF OFF Open Closed OFF Open Closed Be sure to use the contacts meeting the conditions above A CAUTION Before opening the front cover of the converter for wiring work be sure to turn off power to the TB750G turbidimeter Do not touch terminals while the turbidimeter is being powered Ifthe contact capacity exceeds the rating see Table 3 3 use an auxiliary relay to turn on and off the load The contact relay has a limited life If inductance L load such as an auxiliary relay or solenoid valve is used a CR filter for AC relay or diode for DC relay must be inserted in parallel as a surge suppressor circuit for eliminating sparks Otherwise malfunction or relay failure may result IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 17 Converter External DC Power O 4 Diode Should be directly Relay mounted to relay coil Relay coil rating should terminal socket not exceed contact capacity of the converter F3 24E ai Figure 3 15 Inse
130. mptoms appear AClass A extinguisher should be provided in work area Wear protective goggles lab coat and protective gloves to prevent skin contact Use a vent hood in the indoor workplace Fordetails of the chemical handling refer to the Material Safety Data Sheets MSDS A turbidity standard calibration solution should be prepared by diluting a 400 NTU formazin standard stock solution This section describes the procedures for preparing a standard stock solution and a diluted solution for calibration 1 3 1 Preparing a Formazin Standard Stock Solution 1 Reagents Required Hydrazine sulfate NH2 2 H2S04 Hexamethylene tetramine 2 6 2 Equipment Required Measuring flask 2 x 100 ml Measuring flask 1000 ml e Volumetric pipette 50 ml Analytical balance Note Class A volumetric flasks and pipets are required 3 Procedure 1 Weigh out 1 000 g 0 001 g of hydrazine sulfate with a balance place it in a 100 ml measuring flask and add deionized water to make 100 ml solution A 2 Weigh out 10 00 g 0 01 g of hexamethylene tetramine with a balance place it in another 100 ml measuring flask and add deionized water to make 100 ml solution B 3 Make sure that both reagents have been completely dissolved in solutions A and B respectively Pipette 50 ml each of solutions A and B into a 1000 ml measuring flask and mix well 4 Allow the mixed solution to stand for 24 hours at 25 3 C
131. n standard is outside of the range of 25 to 200 or solution each coordinate value of newly determined linearized table is outside of the range of 99999 to 999999 E303 Turbidity check During span Turbidity slope value SL newly determined block failure calibration after span calibration check block is outside check block of the range of 50 to 150 or each coordinate value of newly determined linearized table is outside of the range of 99999 to 999999 E304 Turbidity zero During zero Turbidity zero correction factor B newly correction shift calibration determined after zero shift calibration is factor B failure outside of the range of 9 to 9 E305 Turbidity During span Turbidity sensitivity correction factor K newly sensitivity calibration determined after span calibration sensitivity correction sensitivity correction is outside of the range of 0 25 to 4 factor K failure correction E306 Turbidity During turbidity Turbidity reference sensitivity SO newly reference reference set after span calibration check block is sensitivity SO sensitivity outside of the tolerance of 0 0001 to 2000 or failure calibration each coordinate value of newly determined linearized table is outside of the range of 99999 to 999999 E307 Turbidity All calibrations Turbidity self adjustment is not complete response time filure before self adjustment time has elapsed E321 Communicati
132. n Function Selection Mode Flow Chart IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 23 CODE 51 Alarm Setting Function Selection Mode If Enabled is selected in this mode the SETPOINTS mode can also be accessed from the operation level The alarm setting mode is normally at setting level Note that the pointer is not shown on the display when this mode at operation level is in process YES ENT A Alarm setting function enabled or disabled X O Disabled or 1 Enabled ENT 1 Skipped unless either of functions of contact output S1 or S2 is set to 1 Alarm in Code 40 or 41 at service level Pressing ENT key in CODE 51 will return the instrument to SERV introduction display F6 28E ai Figure 6 28 Alarm Setting Function Selection Mode Flow Chart CODE 52 Password Setting Mode A password can be set for each three level the operation setting and service levels to prevent unauthorized access A password can be selected for each level respectively from among nine options If a password has been set the level cannot be accessed without entering the relevant password YES ENT gt Password A X 0 No password 1 111 2 333 3 777 ENT 4 888 5 123 6 957 7 331 8 546 9 847 X X X Operation level Setting level Service level F6 29E ai Figure 6 29 Password Setting Mode Flow Chart Password Prompt If a password has been set a password prompt will appear
133. n panel of the TB750G converter The panel consists of an LCD screen operation keys and lamps TEMP MAN Turbidity Unit Indication Contact Status LED LCD Screen Operation Keys F5 4E ai Figure 5 4 Operation Panel IM 12E01A06 01E 5 4 5 CONVERTER OPERATION 1 LCD Screen Figure 5 5 shows the LCD screen that consists of a data display a message display status indicators key indicators and a pointer Data Display Status Indicators Pointer HOLD TEMP MAN FAIL bi UNIT DES ER ER ERE ij ij L L i E rem mic MEASURE SETPOINTS CAL RANGE CAL START SET HOLD 1 WASH START CAL WASH Message Display Key Indicators F5 5E ai Figure 5 5 LCD Screen Data display Message display Status indicators HOLD TEMP MAN FAIL Key indicators Pointer 2 Operation Keys Shows turbidity data Shows output current message etc Lit while analog output is being held Not lit in operation Instantaneously lit only when converter goes through an internal check upon power up Lit continuously or flashes when a failure is detected Flashes when prompting Note that gt and ENT indicators flashes in the block even if only the ENT indicator prompts Lit when indicating the current level
134. nces 3 1 3 1 2 Installation 3 1 3 1 3 Installation 3 2 3 1 4 Preparation 3 6 12E01A06 01E 2 4 IM 12E01A06 01E lt CONTENTS gt 3 1 5 Mounting the Converter and Detector 3 8 3 2 ls 3 11 3 2 1 Wiring Required for the TB750G sene 3 11 3 2 2 Cable Inlet 3 13 3 2 3 Analog Output Wiring seen 3 14 3 2 4 Contact Input Remote Range Switching Wiring 3 15 3 2 5 Contact Output 51 52 and FAIL 3 16 3 2 6 Range Contact Output 3 18 3 2 7 Serial Communication 3 19 3 2 8 Checking Wiring between the Converter and the Detector 3 19 3 2 9 Power and Ground Wiring 3 20 3 2 10 External Ground Wiring for the Converter 3 21 3 2 11 External Ground Wiring for the 3 21 3 2 12 Power Wiring for the Ultrasonic Oscillator When Option Code US is lerem 3 22 3 2 13 Wiring to the Ultrasonic Transducer When Option Code US is speci DIIS E
135. ng and gt keys IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 19 If the entered value is outside the setting range error E352 improper range setting will occur Switching Point The converter will switch from the low range to the high range when the turbidity value exceeds the switching point of the low range The converter will switch from the high range to the low range when the turbidity value lowers 10 from the switching point of the low range CODE 33 Analog Output 2 Range Selection Mode The analog output 2 signal range can be selected YES CODE ENT A Range selection for output 2 A X 0 4 0 20 0mA or 1 0 0 20 0mA 2 x N 1 XX X gt Fixed value for hold H mA2 4 Setting range 02 0 to 22 0 mA 4 20mA TIENT 2 or 00 0 to 22 0 mA 0 20mA Xx gt Fixed value for hold during failure FH mA2 A Setting range 02 0 to 22 0 mA 4 20mA ENT 4 or 00 0 to 22 0 mA 0 20mA 2 d 1 Displayed only if hold function is set to Enabled and fixed value H FIX is selected in SET HOLD mode at setting level 2 The same display as the one in H mA2 in SET HOLD mode at setting level 3 Displayed only if FHOLD is set to 1 Enabled and fixed value FH FIX is selected in CODE 35 at service level 4 The same display as the one in FH mA2 in CODE 35 at service level F6 21E ai Figure 6 21 Analog Output 2 Range Selection Mod
136. ng RSETAL A ZerpontforangA ZERO 0000 00 to 2000 00 NTU 0000 00 NTU Span pointforrangeA SPAN 0000 00to2000 00NTU 0010 00 NTU Range B setting RSETBL A Zero point for rangeB ti ZERO 0000 00 to 2000 00 NTU 0000 00 NTU SpanpointfonrangeB SPAN 0000 00 to 2000 00 NTU 0100 00 NTU Range C setting RSETC fo A ZerpontforangeC ZERO 0000 00 to 2000 00 NTU 0000 00 NTU SpanpointfonrangeC SPAN 0000 00 to 2000 00 NTU 1000 00 NTU Automatic range switching point V AUTOR 070 to 1009 0809 CODE33 Analog output 2 range selection See page 6 19 o Range selection for output2 ma2 o 1 0 4 0 20 0mA o Fixed value forhold H mA2 00 0 to 22 0 0 20 220 mA 02 0 to 22 0 mA 4 20mA Fixed value for hold during failure FH mA2 00 0 to 22 0 mA 0 20mA 220 mA 02 0 to 22 0 mA 4 20mA IM 12E01A06 01E 5 CONVERTER OPERATION 5 11 Table 5 3 Setting Parameters at the Service Level 2 3 Code Setting Parameter Display Setting Range Default CODE35 Hold during failure parameter setting See page 6 20 Hold function enabled ordisabled 00 FHOLD 0 1 1 Enabled EF Last measured value or fixed value FH LST FH LST Last measured value FH FIX Fixed FH FIX FH FIX Fixed value value 49 Fixed
137. ng care not to allow air bubbles to enter the cell Care should be taken that the end of the funnel does not contact with the solution level 2 The measurement cell should be filled to 9096 with the span calibration solution Replace the top cover fix it securely with the 6 setscrews and attach the rubber cover Performing a span calibration 1 Wait 3 to 5 minutes until the reading has stabilized Check that SPAN is shown on the message display Press the YES key to select the span calibration Note Pressing the NO key is invalid 2 The message display should show VALUE S 3 Set the decimal point position in the data display using the gt key Press the ENT key to accept the position e g 00 00 4 Set the value on the data display to the value of the span calibration solution using the gt and keys and press the ENT key e g 20 00 5 The turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 6 After the self adjustment is complete the message display will show CAL END Open the drain valve after the detector to drain the span calibration solution Open the sample water supply valve to supply the water sample to the detector It will take time for the complete replacement of the calibration s
138. nsmitted light detection element input display INT Scattered light detection element input display IN2 End END CODE08 Spike detection parameter setting See page 6 12 Spike detection function enabled or disabled SPIKE 0 1 0 Disabled Limit value LIMIT 000 000 t0999 999 999 999 NTU Hold time HLD T 005to600s 0306 0 ESAME Sampling time SsMP T O01to600s 030s 0 CODE11 Zero calibration factor display See page 6 15 Zero calibration factor display CALA 020200000 Depends on MS Code CODE12 Slope display See page 6 15 Slope display T 100 000 CODE13 Zero correction factor setting See page 6 15 Zero correction factor setting CAL B 9 000 to 09 000 NTU 00 000 NTU CODE14 Sensitivity correction factor setting See page 6 16 To IS Sensitivity correction factor setting CALK 0 2500to4 0000 1 0000 CODE16 Standard solution check block selection See page 6 16 0 Standard solution check block CALTP 0 14 f Check Block CODE17 Check block turbidity setting See page 6 16 Check block turbidity 1 PLATE 0 001 to 2000 NTU 90 00NTU CODE30 Analog output range switching parameter See page 6 18 setting Range switching output selection RNGPR 0 1 2 OFked Range switching function selection 7 RSET 0 1 2 3 1 1 Automatic REED Range A setti
139. of the simple head tank connect a fitting corresponding to the connection size and a hose tube with sufficient diameter that provides adequate flow of water sample If pressure exists in a sample water use an appropriate tube that can withstand the pressure 0 a rigid PVC tube If the flow rate of a water sample exceeds 10 l min install a bypass line before the simple head tank to control the flow rate Connect a fitting corresponding to the connection size and a hose tube with sufficient diameter that provides adequate flow of water sample between the sample water outlet Rp1 2 of the simple head tank and the sample water inlet of the detector Connect hoses with an inside diameter of 19 mm to the drain and the vent at the top of the head tank to drain the sample water to a drain pipe To the drain at the bottom of the simple head tank connect a rigid PVC tube corresponding to nominal size 20A 26 2 mm ID to drain the sample water to a drain pipe To the sample water outlet of the detector connect the drain for controlling the flow rate IM 12E01A06 01E 3 28 3 INSTALLATION PIPING AND WIRING 3 3 2 System Using a Pressurized Head Tank In a system using an open head tank air bubbles may form from air dissolved in a water sample under the reduced pressure in piping and enter into the detector resulting in an incorrect measurement For low turbid waters where the effect of air bubbles is a concern inst
140. olution in the measurement cell with the water sample Putting the converter in measurement mode 1 When CAL END is shown on the message display press the YES key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level a HOLD display in step 2 is not shown Calibration is now complete Note After a 2 point calibration a zero point correction or a sensitivity correction the turbidity meter will not show the value indicated on the check block even if the check block is installed in zero solution in measurement mode The value on the check block is valid only for STD CAL 4 1 7 Supplying a Water Sample and Adjusting the Flow Rate Supply a sample water to the detector and adjust its flow rate System Using an Open Head Tank See Piping Diagram in Figure 3 20 1 2 3 4 IM 12E01A06 01E Open the sample water valve to supply a water sample to the head tank Completely open the sample water supply valve to allow the water sample to flow into the detector Check that the water sample is drained from the detector drain Then close the drain valve Adjust the opening of the valve at the sample water out of the detector so that the water sample overflows and is surely drained from the head tank lt 4
141. on 1 Check that the reading stabilizes Then close the zero water supply valve Check that STD CAL is shown on the message display Then press the YES key to enter the calibration using standards 2 The message display will show ZERO Press the NO key The display will show SPAN and then press the YES key to enter the span calibration 3 The message display will show VALUE The data display should read the same value as the one described on the check block and press the ENT key 4 The turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 5 After the self adjustment is complete the message display will show CAL END Removing the check block 1 Open the drain valve of the detector to drain zero water 2 Remove the check block by loosening the 2 setscrews 3 Replace the observation window and fix the retaining plate with the 2 setscrews securely 4 Replace the rubber cover to the top of the detector Exiting from the calibration mode and putting the converter into the measurement mode 1 Check that CAL END is shown on the message display Press the YES key 2 Check that HOLD is shown on the message display Press the NO key to cancel the maintenance state output hold state and put the converter into
142. on During Any communication error during When problem is error communication communication with PC eliminated in the with PC next communication only one time is OK When YES NO key is pressed error code display disappears at the same time during failure error is once removed excluding RS signal during communication with calibration cleaning controller E351 Analog output During Either of When YES NO range setting parameter 1 Zero point 2span point or key is pressed failure setting in 2 Span point zero point lt 20 of span error code display RANGE mode point or 0 20 whichever is greater for disappears and error or CODE 30 turbidity or span point zero point is removed 5 00 for color When automatic range is selected in CODE 30 also possible 3 Ateach span point Range gt B or 4 ateach span point Range B gt E352 Parameter During Value outside the setting range is set in setting setting failure parameter other than AO range setting setting IM 12E01A06 01E 8 8 8 TROUBLESHOOTING IM 12E01A06 01E App 1 Worksheet for Operation Parameter Setting Worksheet for Operation Parameter Setting Service Level 1 Code Setting Parameter Display Default Value CODEO2 Input voltage display See page 6 11 Sdn m Tansmitedightdeecioneementinputdeply S
143. on is used as a turbidity standard solution for the TB750G turbidimeter Note The instrument has been pre calibrated for span point using a formazin standard solution at the factory before shipment 2 Check Block Acheck block used for span check in regular maintenance is supplied with the turbidimeter Note The turbidity value indicated on the check block has been determined for the turbidimeter of interest based on zero and span calibrations at the factory it is a unique value specific to the turbidimeter Be sure to use the check block supplied with the turbidimeter Also special care should be taken when handling a check block Scratches or dirt on the surface of a check block may affect the turbidity value assigned to the block Using the supplied check block for span calibration is not approved for US EPA applications For US EPA applications perform a 2 point calibration using standard solutions IM 12E01A06 01E 1 4 1 OVERVIEW Care must be exercised not to lose the check block supplied with the turbidimeter The check block has a turbidity value unique to the turbidimeter of interest Therefore the same check block cannot be purchased again If it is lost contact Yokogawa 1 3 Formazin Standard Solution NWARNING Thereagents are harmful if inhaled or swallowed n case of contact with skin flush skin with plenty of soap and water Seek medical advice as appropriate if sy
144. ormance with the specific application at the user site Yokogawa will not bear direct indirect responsibility for damage due to a specific application Yokogawa will not bear responsibility when the user configures the product into systems or resells the product Maintenance service and supplying repair parts will be covered for five years after the production ends For repair for this product please contact the nearest sales office described in this instruc tion manual lt CONTENTS gt Toc 1 Model TB750G Right Angle Scattered Light Turbidimeter IM 12E01A06 01E 3rd Edition CONTENTS d iiis js S i Symbols and Notations Used in this Manual ii LJ BNET ere iii After Sales Warranty 1 OVERVIEW 1 1 1 1 Measurement Principle e 4 cene Enn ren SERES 1 2 1 2 Turbidity Standards eric rennen tiere ten ANARA PAAA 1 3 1 2 1 Zero Standard sss 1 3 1 2 2 Turbidity Standards 1 3 1 3 Formazin Standard Solution eese 1 4 1 3 1 Preparing a Formazin Standard Stock Solution 1 4 1 3 2 Preparing a Formazin Calibration Standard Solution
145. ounding terminals of both the converter and the detector Then make the following wiring connections 1 Analog output wiring 2 Contact input remote range switching wiring 3 Range contact output wiring 4 Contact output 81 S2 and FAIL wiring Attach the terminal cover and also replace the grounding terminals of both the converter and the detector Then make the following wiring connection 5 Serial communication wiring 6 Checking wiring to the detector 7 External ground wiring Close the converter s front cover and tighten the 4 setscrews to fix the cover Procedure for Wiring to the Detector Before wiring work make sure that the power supply is disconnected from the TB750G turbidimeter Remove the front cover by loosening the 4 setscrews holding the cover to the detector 8 Power and ground wiring 9 External ground wiring 10 Power wiring for ultrasonic oscillator when option code US is specified Replace the front cover and tighten the 4 setscrews Then remove the left side cover on the detector by loosening the 4 setscrews holding the cover to the detector 11 Wiring to ultrasonic transducer when option code 05 is specified Replace the side cover and tighten the 4 setscrews IM 12E01A06 01E 3 INSTALLATION PIPING AND WIRING 3 13 3 2 2 Cable Inlet Port The TB750G converter has 6 cable inlet ports and the detector has 3 cable inlet ports A cable gland corresponding to the cable w
146. ove the rubber cover from the top of the detector Remove the top cover by loosening the 6 setscrews 3 Slowly pour the span calibration solution into the measurement cell taking care not to allow air bubbles to enter the cell When the measurement cell is filled to approximately 90 with the solution open the drain valve to drain the calibration solution 4 Continue to pour the span calibration solution to the measurement cell Supplying the span calibration solution to the measurement cell 1 Close the drain valve after the detector Pour the span calibration solution into the measurement cell very slowly using a funnel or relevant equipment taking care not to allow air bubbles to enter the cell Care should be taken that the end of the funnel does not contact with the solution level 2 The measurement cell should be filled to 9096 with the span calibration solution Replace the top cover fix it securely with the 6 setscrews and attach the rubber cover Performing a span calibration 1 Wait 3 to 5 minutes until the reading has stabilized Check that SPAN is shown on the message display Press the YES key to select the span calibration Note Pressing the NO key is invalid 2 The message display should show VALUE S 3 Set the decimal point position in the data display using the gt key Press the ENT key to accept the position e g 00 00 4 Set the value on the data display to the value of the span calibration sol
147. ow CAL END To continue to perform a span calibration press the NO key and proceed to step 4 in Subsection 7 6 2 Span Calibration using the Check Block To end the zero calibration open the drain valve after the detector to drain zero water Open the sample water supply valve to supply a water sample to the detector Putting the converter in measurement mode 1 When CAL END is shown on the message display press the YES key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level a HOLD display in step 2 is not shown 10 Zero calibration is now complete IM 12E01A06 01E 7 MAINTENANCE 7 11 7 6 2 Span Calibration Using the Check Block Before using the check block wash it with mild detergent and then rinse it with water Do not wipe it dry and use it in wet condition For cleaning procedures refer to How to Clean the Check Block A span calibration is normally performed using the supplied check block in span calibration mode STD CAL at the operation level A certain turbidity value is assigned to the check block after the TB750G turbidimeter has been calibrated with a formazin standard solution at the factory The calibration should be performed using turbidity standards
148. pan turbidity be used as zero and span solutions respectively 2 Using a user prepared zero solution and a commercially prepared span solution A zero solution should be prepared and its turbidity should be measured using a calibrated lab turbidimeter Use the prepared zero solution and commercially prepared span solution for the calibration As stated above a formazin solution with a turbidity different from the span solution s may be used as a zero solution 3 Using commercially prepared zero and span solutions Supply commercially prepared zero and span solutions to perform the calibration The following describes how to perform a 2 point calibration Prepare zero and span solutions according to the above As for the formazin calibration standard solution with a turbidity of 2 NTU or less extreme care must be taken to prevent air bubbles from being contained when preparing and when introducing it to the measurement cell 1 Putting the converter in calibration mode maintenance state 1 Press the MODE key on the converter The message display should show CALIB 2 Press the YES key to enter calibration mode 2 Draining the water sample 1 Close the sample water supply valve 2 Open the drain valve after the detector to drain the water sample IM 12E01A06 01E 3 S 7 MAINTENANCE 7 17 Washing the measurement cell 1 Open the zero water supply valve to supply zero water to the detector 2 Close the
149. product but does not warrant that they will suit the particular purpose of the user The contents of this manual shall not be reproduced or copied in part or in whole without per mission The contents of this manual are subject to change without prior notice Every effort has been made to ensure the accuracy in the preparation of this manual However if any errors or omissions are noticed please contact the nearest Yokogawa representative or sales office m Protection Safety and Modification of the Product The safety instructions described in this manual should be strictly observed to ensure safety both of the product and the system controlled by the product Aprotection or safety circuit should be installed externally if needed Do not attempt to modify or add such circuit to the inside of the equipment m Limitation of Liability Yokogawa grants no warranties other than the express warranty set forth under the warranty provisions Yokogawa shall not be liable to you or any third party for any damage including consequential or incidental damages arising out of or in connection with the use of this equipment defects beyond our knowledge or any other contingency beyond our control IM 12E01A06 01E iv INTRODUCTION After Sales Warranty IM 12E01A06 01E Do not modify the product During the warranty period for repair under warranty carry or send the product to the local sales
150. r Assembly 1um K9411UA Filter Assembly 0 2um K9726EF IM 12E01A06 01E 2 8 2 SPECIFICATIONS gt 2 4 5 Accessories Item Qty Description Lamp assembly 1 Fuse 3 15A 2 3 15 Desiccant 1 4pcs Part Number K9657RJ Silicon cloth 1 Part Number K9210KS Check block 1 2 4 A Consumables Part Name Part No Filter Element 1 um K9008ZD Filter Element 0 2 um K9726EH Lamp Assembly for TB750G K9657PW Fuse 3 15 A A1113EF Desiccant 4 pcs K9657RJ 1 Use within a year after purchasing 2 4 5 Head Tank Part Name Part No Description Pressurized head tank K9725WA 5 as option code D1 Simple head tank K9658YA Same as option code D2 IM 12E01A06 01E 2 SPECIFICATIONS gt 2 9 2 External Dimensions 2 5 4 TB750G Right Angle Scattered Light Turbidimeter Converter 141 5 Unit mm 132 4 M6 screws 150 E 210144 amp a 4 c im i 28 Maintenance space S Detector connecting 6 Cable inlets woe cable inlet DIN Pg13 5 Cable gland Dedicated cable 1 2 3m F2 1E ai to Detector Detector Unit mm Front view Side view 250 min Maintenance space Sample water outlet Re1 2 or 1 2NPT Power cable inlet Converter connecting cable inlet LOT Sample water Dedicated cable inlet Ultra
151. r lamp to the terminal block LAMP Supply power to the TB750G turbidimeter Check that the lamp is lit Replace and fix the cover of the light source unit by tightening the 4 setscrews After the lamp replacement allow the turbidimeter to warm up for at least one hour Then perform calibrations instructed in Sections 7 6 to 7 8 Lamp replacement is now complete Lamp Assembly Cover of the Light Source Unit 5 ER r t EHE Cover for Setscrews 2 Terminal Terminal Block Setscrews 2 l ey on Terminal Block are A E 34 Lamp Assembly View A F7 4E ai Figure 7 4 Lamp Replacement IM 12E01A06 01E 7 MAINTENANCE 7 7 7 6 Do not touch any other parts which fixed by enamel paint except lamp setscrews to prevent optical alignment from changing Calibration Using Turbidity Standards Calibration using turbidity standards for the TB750G should be performed before starting operation the very first time and before restarting after long downtime after the lamp has been replaced ameasurement error exceeds the
152. r sample from the detector should be discharged to the atmosphere at a point higher than the measurement cell of the detector If not a siphon may be created and the measurement cell may not be filled with a water sample In addition if the sample inflow stops the water sample will be drawn off and the measurement cell will be emptied which can cause damage to the ultrasonic transducer if used 3 Drain Piping This piping is for draining a water sample from the measurement cell of the detector and a head tank during cleaning calibration or other maintenance 1 2 4 Piping The drain of the detector is Rc1 or 1 NPT female thread Install a fitting corresponding to the thread and connect a hose tube with sufficient diameter that provides adequate flow of water sample to route the water sample from the detector to a drain pipe Install the pipe so that no stagnation occurs As shown in Figure 3 24 install pipe so that the water sample can be drained from the head tank to the drain pipe of the Zero Water Line This piping is for introducing tap water to a zero turbidity filter and then to the detector for zero ca 1 2 IM 12E01A06 01E libration or measurement cell cleaning As shown in Figure 3 24 install a tap water valve and a zero water drain valve Connect a zero water supply valve to one end of the 3 waytee fitting attached to the sample water inlet of the detector Install a fitting correspondin
153. rameter Setting at the Setting Level eee 6 6 6 3 Parameter Setting at the Service Level eene 6 11 7 MAINTENANCE cssccescessessssecsessessesessssessessesessesscseesessesesseesessesseserseeses 7 1 7 1 Inspection Maintenance Items and 7 1 7 2 Removing Sediment from the Measurement Cell 7 2 7 3 Washing the Measurement Cell eee 7 3 7 4 Washing the Head 7 5 7 5 Lamp 7 6 7 6 Calibration Using Turbidity Standards eese 7 7 7 6 1 Zero Calibration Using Zero 7 10 7 6 2 Span Calibration Using the Check 7 11 7 6 3 Span Calibration Using a Formazin Standard Solution 7 14 7 7 2 point Calibration Using Turbidity Standard Solutions 7 16 7 8 Grab Sample 7 19 7 9 Checking and Replacing 7 21 7 10 Checking the Operation of Each
154. range for output 2 Todes lzeopon ZERO 0000 00 to 2000 00NTU 0000 00 NTU Span point SPAN 0000 00 to 2000 00 NTU 0100 00 NTU Local range selection LOCAL Local range for output 1 or LCL 1 or 0 1 2 0 RangeA local range for output 2 TEES SET HOLD Hold parameter setting HOLD See page 6 9 Hold function enabled orhold H ONor H ON Enabled H ON Enabled function disabled H OFF Disabled UU Last measured value orfxed 7 MLSTor HiST sstmessuedvaus HLSTLast value Fixed value measured value Fixed value for output H mA1 020 0220 m 220 mA Fixed value foroutput2 H mA2 00 0 to 22 0 0 20 220 02 0 to 22 0 mA 4 20mA CAL WASH Not available SERVICE 2 1 Skipped if alarm setting function is set to 0 Disabled in Code 51 at service level or if either of function of contact output S1 or S2 is not set to 1 alarm in Code 40 or 41 at service level 2 For service level see Section 6 3 IM 12E01A06 01E 5 10 5 CONVERTER OPERATION 5 3 3 Setting Parameters at the Service Level At the service level enter the code number of the desired setting mode to access Table 5 3 Setting Parameters at the Service Level 1 3 Code Setting Parameter Display Setting Range Default CODEO2 Input voltage display See page 6 11 Tra
155. ration solution 4 Continue to pour the zero calibration solution to rinse the measurement cell 4 OPERATION 4 5 4 Supplying the zero calibration solution to the measurement cell 1 Close the drain valve after the detector Slowly pour the zero calibration solution into the measurement cell using a funnel or relevant equipment taking care not to allow air bubbles to enter the cell Care should be taken that the end of the funnel does not contact with the solution level F4 1E ai Figure 4 1 How to Pour the Standard Solution 2 The measurement cell should be filled to 9096 with the zero calibration solution Replace the top cover fix it securely with the 6 setscrews and attach the rubber cover b Performing a zero calibration 1 Wait 3 to 5 minutes until the reading has stabilized Check that STD CAL is shown on the message display 2 Press the NO key The message display should show SMP CAL Press the YES key 3 The message display should show ZRSPN Press the YES key to select the zero calibration 4 The message display should show VALUE Z 5 Set the decimal point position in the data display using the gt key Press the ENT key to accept the position e g 0 000 6 Setthe value on the data display to the value of the zero calibration solution using the and keys and press the ENT key e g 0 020 7 The turbidimeter starts a calibration self adjustment with
156. re increasing demands for good quality water for both industrial use and drinking water applications because of rapid industrial development and consumer demands for better quality of life A large amount of the waste water from both applications has been drained or discharged into rivers causing pollution to worsen year after year This has caused serious social problems Therefore turbidimeters conventionally used for the operation and control of water purification plants are nowadays being required to measure the amount of matter suspended in various sorts of industrial waste water and to measure the turbidity of chemical processes Since their sales began in 1959 Yokogawa s turbidimeters have been continuously developed and improved using various measurement principles suited for various applications With its many achievements Yokogawa has earned its customers confidence Developed based on years of experience and applications in process fields the TB750G Right Angle Scattered Light Turbidimeter provides highly reliable measurement and improved maintainability which improve upon what previous models could offer A wide range of options are available to meet users various needs The TB750G is a process turbidimeter employing the right angle light scattering method and has the following features Highly reliable measurement with excellent linearity and repeatability Linearity 296 of reading or 0 01 NTU whichever is greater R
157. ring between the Converter and the Detector A dedicated cable has been connected between the converter and the detector before shipment Ensure that the cable is securely connected to terminals SENSOR and G on the converter If the cable is disconnected from these terminals during the converter wiring work reconnect it IM 12E01A06 01E 3 20 3 INSTALLATION PIPING AND WIRING 3 2 9 Power and Ground Wiring The power wiring is for supplying a voltage of 85 to 264 V AC with a frequency of 50 60 Hz to the TB750G detector Use a power supply where the voltage does not fluctuate outside the operating range The ground wiring is for grounding the grounded circuit inside the detector Ground wiring should be connected to terminal G in the converter and grounded at the power supply side with JIS Class D grounding ground resistance 100 or less A CAUTION Before opening the front cover of the converter or the detector turn off power to the TB750G turbidimeter Make sure that the turbidimeter is not powered before wiring work Do not touch terminals while the turbidimeter is being powered The TB750G Right Angle Scattered Light Turbidimeter does not have an internal power switch Be sure to provide a switch double pole type compliant with IEC 60947 1 and IEC 60947 3 in the power line as close to the instrument as possible The on and O off symbols should be indicated near the switch if they are not ind
158. rs As shown Figure 3 20 install the pipe so that the water sample can be drained from the head tank to the drain pipe during measurement or maintenance 4 Piping of the Zero Water Line This piping is for introducing tap water to a zero turbidity filter and then to the detector for zero calibration or measurement cell cleaning 1 2 As shown in Figure 3 20 install a tap water valve and a zero water drain valve Connect a zero water supply valve to one end of the 3 way tee fitting attached to the sample water inlet of the detector Install a fitting corresponding to the piping connection of the zero turbidity filter and connect a hose tube that can withstand the pressure of tap water such as a rigid PVC tube The flow rate of zero water supply should be in the range of 1 to 3 l min Forthe specifications of the zero turbidity filter see Section 1 2 IM 12E01A06 01E 3 26 3 INSTALLATION PIPING AND WIRING 5 To prevent corrosion of water inside the zero turbidity filter allow water to flow through the filter and flow out from the zero water drain valve continuously at a flow rate of approximately 10 ml min 5 Optional Simple Head Tank An optional simple head tank with a vent to the atmosphere option code D2 shown in Figure 3 21 is available from Yokogawa The piping diagram of the simple head tank is shown in Figure 3 22 The installation of and the piping for the simple head tank are described belo
159. rt on the surface 3 If dirt still persists gently rub the rod with a tissue paper in the solution to remove the dirt 4 Thoroughly rinse off the washing solution with tap water 5 When using the check block immediately do not shake off the residual solution on the rod and use it in wet condition For storage shake off the residual solution and blot with a tissue paper Take care not to hardly rub the rod when blotting IM 12E01A06 01E 7 14 A 7 MAINTENANCE TE Avoid rubbing hardly regardless of the material of the cloth Do not use agents other than mild detergent for wash avoid ethanol acetone and other solvents Do not use fingers to wipe off the rod Handle with care Scratches on the rod may interfere with accurate measurement 7 6 3 Span Calibration Using a Formazin Standard Solution A span calibration can be performed using a formazin standard solution in span calibration mode STD CAL at the operation level For the preparation of the formazin calibration standards solution see Section 1 3 As for the formazin calibration standard solution with a turbidity of 2 NTU or less extreme care must be taken to prevent air bubbles from being contained when preparing and when intro 1 IM 12E01A06 01E ducing it to the measurement cell Selecting the standard solution in CODE 16 at the service level 1 Press the key on the converter for at least one second to enter the setting level 2 Pres
160. rting Diode for DC Relay Converter External AC Power 7 62 C CR Filter Should be directly Relay mounted to relay coil Relay coil rating should terminal socket not exceed contact capacity of the converter F3 25E ai Figure 3 16 Inserting CR Filter for AC Relay Cable Required Use a cable with a finished outside diameter of 6 to 12 mm The number of conductors is determined by that of signals 2 or 4 conductors Procedure 1 Terminating the cable Strip off approximately 40 mm of the insulation from the end of the cable Terminate the ends of each conductor with crimp terminals corresponding to the M3 screw 2 Connecting the cable to the converter Connect the conductors of the cable to the specified terminals on the converter To run the cable through the cable gland remove the assembled parts from the cable gland body at cable inlet port B and then slide these parts over the cable in order 3 Fixing the cable Adjust the cable length housed in the converter and fix the cable by mounting the parts to the cable gland body IM 12E01A06 01E 3 18 3 INSTALLATION PIPING AND WIRING 3 2 6 Range Contact Output Wiring As analog output range three types of ranges can be configured and switched This wiring should be made when using the range contact output The rating and operation of the range contact output relays are provided in Tables 3 5 and 3 6 respectively
161. s manual Indicates hazards e g electric shock which will result in serious personal injury or death if instruc tions are not followed AA Indicates that damage to software or hardware system failures could occur if instructions are not followed fuor Instructions needed to understand the operation and functions Nn Supplementary information CXSEE ALSO Related items or pages m Notations In this manual operation keys display messages indicators and LED lamps on the instrument are denoted in the following manner 1 Operation keys are denoted by brackets for example YES gt YES key 2 Indicators messages and numerical data on the display are denoted as follows Status indicator HOLD indicator Key indicator ves indicator Message display WASH Data display 2 05 when lit 2 05 when flashing 3 Status lamps and modes on the front panel are denoted as follows Contact status LED lamp 651 when lit lt OS1 gt when not lit Measurement mode gt measure MEASURE mode 4 Flashing state on the display is denoted in light gray for example MA gd Flashing Lit IM 12E01A06 01E INTRODUCTION iii Notice m Aboutthis Manual This manual should be passed on to the end user This manual should be read thoroughly before operating the instrument This manual explains the functions contained in this
162. s the MODE key on the converter Check the CALIB is shown on the message display 2 Press the NO key The message display should show HOLD Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the YES key to put the converter in the maintenance state analog output signal is held The HOLD indicator turns on Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level steps 2 and cannot be done If analog output should be held during maintenance select Enabled H ON The factory default is Enabled H ON 2 Remove the covers of the light source unit and the receiver on both left and right sides of the detector by loosening the 4 setscrews 3 Remove the desiccants and check for softness with the hand Desiccants soft textured in gel form should be replaced 4 Install the desiccants which printed side is puting inner side in place Attach and securely fix the covers of the light source unit and the receiver on both left and right sides of the detector with the 4 setscrews b Putting the converter in measurement mode 1 Press the MODE key on the converter Check that the message display shows CALB 2 Press the NO key repeatedly until HOLD appears on the message display Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message displ
163. s the NO key repeatedly until SERV appears on the message display Press the YES key to enter the service level 3 The message display should show CODE Set the data display to 16 using the gt and keys Then press the ENT key 4 The message display should show CAL TP Set the data display to 0 standard solution using the gt and keys Then press the ENT key 5 Check that the message display shows SERV Putting the converter in calibration mode maintenance state 1 Press the MODE key on the converter The message display should show CALIB 2 Press the YES key to enter calibration mode Draining the water sample 1 Close the sample water supply valve 2 Open the drain valve after the detector to drain the water sample Washing the measurement cell 1 Open the zero water supply valve to supply zero water to the detector 2 Close the drain valve after the detector When the measurement cell is filled with the water open the drain valve to drain 3 Repeat steps 1 and 2 at least three times to wash the inside of the measurement cell Rinsing the measurement cell with the formazin calibration standard solution 1 Make sure that the zero water supply valve and the drain valve are closed 2 Remove the rubber cover from the top of the detector Remove the top cover by loosening the 6 setscrews 3 Slowly pour the formazin calibration standard solution into the measurement cell
164. sonic oscillator for power from 1 2 3m Rc1 2 or 1 2NPT connecting cable inlet Converter Ultrasonic transducer Rc1 or 1NPT US only connecting cable inlet Cable gland DIN Pg13 5 US only IM 12E01A06 01E 2 10 2 SPECIFICATIONS gt Conduit adapter option code AFTG ANSI Nut Unit mm Packing Approx 55 _ Adapter Sree G1 2 AFTG or 1 2NPT ANSI F2 3E ai For external dimensions of mounting hardware option code U R TBC and head tank option code D1 D2 refer to Chapter 3 2 5 2 Zero Turbidity Filter Assembly Unit mm 4 M4 fixing screws Piping inlet amp outlet Filter element Filtering size K9411UA K9726EF F2 4E ai IM 12E01A06 01E lt 2 SPECIFICATIONS gt 2 11 2 6 Piping Diagram The Piping diagram recommended is shown below Refer to Section 3 3 for details Head Tank Flow Control Valve 4 Sample Water Effluent Sample Water TB750G Drain Sample Water Drain Y Detector Valve Valve4s Drain Sample Water Y Drain Valve Supply Valve Tap Zero Water Wess Drain r Other Turbidity Detectors Zero Turbidity L pq F2 5E ai 27 Connection Diagram TB750G Turbidity detector TB750G Turbidity converter Power oL CONVERT supply ov pore r Grounding Contact 1000 or less output S1 Serial commu
165. surement mode will return the instrument to measurement mode ftheturbidimeter is set to factory defaults it will return to measurement mode via the HOLD display 1 Mode Switching at the Operation Level see Chapter 6 for details 1 Press the MODE key once The display shown in Figure 5 7 1 appears HOLD y ign SETPOINTS I SETPOINTS RANGE wm RANGE SET HOLD SET HOLD CAL WASH CAL WASH SERVICE Vt y HI SERVICE X Pointer is flashing at lt CAL gt mode and YES and NO key indicators Display shown above appears when YES key is pressed Pointer are flashing This is asking you whether to enter calibration mode and stops flashing and STD CAL appears on message display with next prompting you to answer by pressing YES or NO key prompts HOLD indicator depends on setting F5 8E ai Figure 5 7 Examples of Displays at the Operation Level 2 When the display shown in Figure 5 7 1 appears press the NO key Another mode will appear Each time the NO key pressed the display switches and shows another mode prompt screen After the display cycles through the mode menus it returns to the one shown in Figure 5 7 1 2 Switching to the Setting Level see Chapter 6 for details To switch to the setting level press and hold the key for at least one second when in measurement mode SETPOINTS SETPOINT
166. t XXXmA2 Switchable output range state RNGT ABBC 000000900000 No pointer at Alarm setting SETP 3 See page 6 4 mode display High alarm setpoint gt S TB H 010 0 to 2200 0 NTU 1 2200 0 NTU Lowalarmsetpoint STB L 010 0 to 2200 0 NTU 1 010 0 0 HOLD Hold selection HOLD 4 See page 6 5 Hodselecion pe Disabled 1 Although setting range is up to 2000 NTU measuring range is up to 100 NTU contact output S1 or S2 is not set to 1 Alarm in Code 40 or 41 at service level Skipped if hold function is set to Disabled in SET HOLD mode at setting level Skipped if analog output range switching selection RNGPR is set to 0 Fixed in CODE 30 at service level Skipped if alarm setting function is set to 0 Disabled in Code 51 at service level or if either of function of IM 12E01A06 01E lt 5 5 3 2 Setting Parameters at the Setting Level CONVERTER OPERATION gt Table 5 2 Setting Parameters at the Setting Level Mode Setting Parameter Display Setting Range Default SETPOINTS Alarm setting SETP 1 See page 6 7 High alarm setpoint S TB H 010 0 to 2200 0 NTU 00 1 2200 0 NTU LEN Low alarm setpoint S TB L 010 0 to 2200 0 NTU 0 1 010 0NTU Analog output range setting RANGE See page 6 7 Fixed range for output 1 or FIXR1or 000000010000 fixed
167. t in maintenance display is used YES CODE ENT XXX Time constant in measurement TC A Setting range 000 to 120 s ENT XXX Time constant in maintenance TC M A Setting range 000 to 120 s ENT F6 23E ai Figure 6 23 Time Constant Setting Mode Flow Chart IM 12E01A06 01E 6 PROCEDURES FOR SETTING PARAMETERS 6 21 CODE 40 Contact Output S1 Function Selection Mode A function assigned to contact output S1 can be selected Note that an option not available in the specifications will not start even if selected YES ENT A Function of contact output S1 X 0 None 1 Alarm ENT 2 Automatic calibration washing 3 Maintenance F6 24E ai Figure 6 24 Contact Output 81 Function Setting Mode Flow Chart CODE 41 Contact Output S2 Function Selection Mode A function assigned to contact output S2 can be selected Note that an option not available in the specifications will not start even if selected YES ENT A Function of contact output S2 X 0 None 1 Alarm ENT 2 Automatic calibration washing 3 Maintenance F6 25E ai Figure 6 25 Contact Output S2 Function Selection Mode IM 12E01A06 01E 6 22 6 PROCEDURES FOR SETTING PARAMETERS CODE 44 Delay Time Hysteresis Setting Mode If the turbidity value crosses the high low alarm setpoint rapidly the alarm output will be switched rapidly To prevent this the following two parameters should be set 1
168. t to 2 Remote 2 range 4 Zero and span points should be set together Only after span point has been entered both zero and span points are set Cancellation by pressing MODE key during the procedure will not change either of points F6 20E ai Figure 6 20 Analog Output Range Switching Parameter Setting Mode Flow Chart RNGPR Range switching output selection display Set 0 fixed 1 analog output 1 or 2 analog output 2 using key RSET Range switching function selection display Set 0 manual 1 automatic 2 remote 2 range or 3 remote 3 range using key RSET A or B or C Analog output range A or B or C initial setting display ZERO Range A or B or C zero point setting display Set the desired value within the range of 0000 00 to 2000 00 NTU using and gt keys SPAN Range A or B or C span point setting display Set the desired value within the range of 0000 00 to 2000 00 NTU using and gt keys Instructions for Setting Zero and Span Points 1 Zero point span point 2 Span point zero point gt 2096 of span point or 0 20 NTU whichever is greater 3 Span point of Range A span point of Range B span point of Range C If the keyed in value is outside the setting range error E351 improper analog output range setting will occur AUTOR Automatic range switching point setting display Set the desired value within the range of 070 to 100 96 usi
169. ta format ASCII Transmission speed 9600 bps Parity bit Even parity Stop bit 1 Data length 8 bits Transmission method Asynchronous non procedural Communication description IM 12E01A06 01E 2 2 2 SPECIFICATIONS gt 1 Turbidity Request command receive data CROC5Cgle SUM The last two digits of the total before SUM Turbidity read command Communication data transmit data ARO Cp LF SUM Turbidity Turbidimeter status information Communication status Turbidity read return status Communication status See Note in case other than 0 0 no communication error 1 parity error 2 framing error 3 overrun error 4 check sum error 5 command error Turbidimeter status information Operation status 0 in measurement 1 in calibration 2 in maintenance excluding calibration Range status output range 2 0 fixed range 1 range A 2 range B 3 range C Range status output range 1 0 fixed range 1 range A 2 range B 3 range C Alarm generation 0 no alarm 1 alarm generated Error generation 0 no error 1 error generated Turbidity the same significant digits as turbidimeter reading L Unit 1 NTU 2 FNU 3 mg l Number Right aligned including decimal point no number denoted by blank negative sign
170. th mild detergent 1 2 3 4 5 Putting the converter in the maintenance state 1 Press the MODE key on the converter Check the CALIB is shown on the message display 2 Press the NO key repeatedly The message display should show HOLD Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the YES key to put the converter in the maintenance state analog output signal is held The HOLD indicator turns on Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level steps 2 and 3 cannot be done If analog output should be held during maintenance select Enabled H ON The factory default is Enabled H ON Draining the water sample 1 Close the sample water supply valve 2 Open the drain valve after the detector to drain the water sample Washing the measurement cell 1 Open the zero water supply valve to supply zero water to the detector 2 Close the drain valve When the measurement cell is filled with the zero water open the drain valve to drain 3 Repeat steps 1 and 2 at least three times Leave the drain valve open Remove the rubber cover from the top of the detector Remove the detector top cover by loosening the 6 setscrews Rubber Cover Setscrews 6 Top Cover F7 2E ai Figure 7 2 Top Cover of the Detector IM 12E01A06 01E 7 MAINTENANCE
171. th spare If lamp voltage is outside the range board failure may have occurred Request repair service 10 E304 Turbidity zero correction factor B failure Check Possible Cause and Action Check if calibration has been performed within the Calibration can be performed within the turbidity range range where zero shift can be done of 9 to 9 NTU gt Perform calibration within this range 11 E305 Turbidity sensitivity correction factor K failure Check Possible Cause and Action Check if span calibration has been performed within Calibration can be performed within the correction the range where span calibration can be done factor range of 0 25 to 4 gt Perform calibration within this range 12 E306 Turbidity reference sensitivity SO failure Check Possible Cause and Action Measure turbidity of calibration solution at a lab If turbidity is not the certified turbidity calibration error has occurred Prepare fresh calibration solution Perform a span calibration If turbidity is normal check measurement cell window for dirt Remove front cover of detector Measure lamp voltage at terminal TM3 The voltage must be 3 5 0 1 VDC Dirt or air bubbles on window may interfere with accurate measurement Wash window with detergent Perform a zero calibration If lamp voltage is within the range lamp intensity may have reduced Replace with spare If lamp voltage is outside the ran
172. the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 8 After the self adjustment is complete the message display will show SPAN Note At this stage the zero calibration has not been yet reflected in measured values A calibration factor will be calculated after the span calibration is completed 6 Open the drain valve after the detector to drain the zero calibration solution 7 Rinsing the measurement cell with the span calibration solution 1 Make sure that the zero water supply valve and the drain valve are closed 2 Remove the rubber cover from the top of the detector Remove the top cover by loosening the 6 setscrews 3 Slowly pour the span calibration solution into the measurement cell taking care not to allow air bubbles to enter the cell When the measurement cell is filled to approximately 9096 with the solution open the drain valve to drain the calibration solution 4 Continue to pour the span calibration solution to rinse the measurement cell IM 12E01A06 01E 8 lt nA gt 12 13 4 OPERATION Supplying the span calibration solution to the measurement cell 1 Close the drain valve after the detector Slowly pour the span calibration solution into the measurement cell using a funnel or relevant equipment taki
173. the rightmost digit is flashing the current decimal point will be flashing Then each press of the gt key will cycle through the decimal point as described above and then the leftmost digit will be flashing IM 12E01A06 01E 5 8 5 CONVERTER OPERATION 5 Password Entry 5 3 5 3 1 To prevent unauthorized access the operation setting and or service levels can be individually protected by a password nine password options selectable If a password has been set for the level a password prompt will appear when you attempt to access that level see Section 5 1 3 When the instrument is shipped from the factory no passwords are preset thus a password prompt will not appear Setting Parameter List Lists of setting parameters at each level are provided in this section Setting Parameters at the Operation Level Table 5 1 Setting Parameters at the Operation Level Mode Setting Parameter Display Setting Range Default CAL Calibration CALIB See page 6 2 MENT Using turbidity standards or ST CALor using water sample SMECAL ZEFROorSPAN or ZRSPN Turbidity value S VALUE 000110200 NTU 7 8 Self adjustment in process ZEROorSPAN CALEND CAL START Not available WASH Not available START DISPLAY Message display selection DISP See page 6 4 A Analog output 1 current Output 1 current Analog output 2 curren
174. tlet Rc1 2 or 1 2NPT optional Drain port Rc1 or 1NPT optional Cable inlet port detector and converter DIN Pg 13 5 cable gland Cable OD 6 to 12 mm Dimensions Detector 378W x 174H 265D mm Converter 144W x 144H x 142D mm Material main Detector Aluminum alloy casting modified PPE resin Wetted parts Modified PPE resin glass fluoric rubber silicon rubber SUS316 Converter Aluminum alloy casting Polycarbonate resin Construction JIS C 0920 IP65 Water tight Finish Detector Converter Baked polyurethane resin coating standard Baked epoxy resin coating optional Color Detector Spring Black Munsell 3 3PB2 5 0 5 or equivalent Mint green Munsell 5 6BG3 3 2 9 or equivalent Converter Silver Gray Munsell 3 2PB7 4 1 2 or equivalent Weight Detector Approx 5 8 kg Converter Approx 1 5 kg Power supply 100 to 240 VAC 15 10 50 60 Hz Grounding Class D grounding Grounding resistance of 1000 or less Power consumption Converter Detector 50 VA max EMC Regulatory Arrangement in Australia and New Zealand EN55011 Class A Group 1 KC Marking Korea Electromagnetic Conformity Standard x77 GTS YSEA ZA 9 7 7 iz ATS AAAA 7 7 ASAE o BS els urit 79 99 AANA AS Balog quu 2 2 Characteristics Standard performance under normal operating conditions Repeatability 1 of reading or 0 002 NTU whichever is greater Linearity 2 of reading or 0 01 NTU whichever is greater R
175. ty signal is taken during the process Function restarts Air Bubbles Detected gt Limit Value A Limit Value NS Ne d o Sampling Hold Time Time TONES In Process Turbidity Signal lt gt I Intake Cycle Time A Difference between the current signal and the previous signal F6 12E ai Figure 6 12 Spike Detection Function IM 12E01A06 01E 6 14 6 PROCEDURES FOR SETTING PARAMETERS How to Set Each Parameter a Limit Value A limit value is used to determine whether a reading is a spike due to air bubbles or dust and is defined as a turbidity value in NTU The ratio of the sensitivity correction factor is also calculated automatically For the Limit Value check a pre averaging turbidity value is used To determine the Limit Value it may be needed to know the degree of fluctuation in pre averaging turbidity signals Set the time constant for averaging in CODE 37 at the service level to 0 mode to allow the turbidimeter to give turbidity readings directly without averaging Check readings to know the degree of fluctuation Generally the Limit Value is set to a value greater than the fluctuation b Hold Time When a signal exceeds the Detection Level the readings and output signals are held for a specified Hold Time The Hold Time should be long enough for removing air bubbles and dust from the sample surface Normally air bubbles and dust will run off th
176. ty standards Grab sample calibration Checking and replacing desiccants Replacement of zero turbidity filter element Fuse replacement Pipe cleaning Cleaning of front covers of detector converter As needed Weekly Monthly Yearly Monthly As needed Monthly Yearly Yearly 6 months As needed This is an interval estimated if tap water used has an average turbidity of 0 4 NTU and runs at a flow rate of 2 l min Inspection Maintenance Items and Recommended Intervals IM 12E01A06 01E 7 2 7 2 lt 7 MAINTENANCE gt Removing Sediment from the Measurement Cell If the turbidity of a water sample is high suspended matter may settle to the bottom of the measurement cell Remove the rubber cover from the top of the detector and visually check the measurement cell from the observation window If sediment is visible open and close the drain valve after the detector at least three times to remove the sediment 1 Putting the converter in the maintenance state 1 Press the MODE key on the converter Check the CALIB is shown on the message display 2 Press the NO key repeatedly The message display should show HOLD Press the YES key to enter analog output hold selection mode 3 Check that HOLD is flashing on the message display Press the YES key to put the converter in the maintenance state analog output signal is held The HOLD indicator turns on Note If the analog output hold function has been s
177. ulated from a zero calibration zero water is displayed YES Zero calibration factor diaplay Display range 1 0000 to 5 00000 ENT F6 13E ai Figure 6 13 Zero Calibration Factor Display Mode Flow Chart Note This mode is only for displaying the values not user configurable CODE 12 Slope Display Mode Slope SL calculated from a span calibration standard solution or check block is displayed YES ENT Slope display Display range 025 0 to 200 0 ENT F6 14E ai Figure 6 14 Slope Display Mode Flow Chart Note This mode is only for displaying the values not user configurable CODE 13 Zero Correction Factor Setting Mode Zero correction factor B calculated from the 2 point calibration or zero point correction is displayed The zero correction factor can also be changed YES ENT Zero correction factor setting 4 Setting range 9 000 to 09 000 NTU ENT F6 15E ai Figure 6 15 Zero Correction Factor Setting Mode Flow Chart IM 12E01A06 01E 6 16 6 PROCEDURES FOR SETTING PARAMETERS CODE 14 Sensitivity Correction Factor Setting Mode Sensitivity correction factor K calculated from the 2 point calibration or sensitivity correction is displayed The sensitivity correction factor can also be changed YES ENT gt Sensitivity correction factor setting A Setting range 0 2500 to 4 0000 ENT F6 16E ai Figure 6 16 Sensitivity Correction
178. ult Value CODE71 Analog output test See page 6 26 22 Start testfor output 1 aonr Test current flowing 1 MERCED d MM TENDS Start testfor output2 AO2T T ee MD 77 CODE72 Contact output test See page 6 27 EHE Tet DOTf istmesredvlehed HL Test2 DOT2 bsmesuedvdehed CODE73 Contact input test See page 6 27 MEE MM CODE79 Initialization See page 6 28 cer bee pares wea ur oap Defauttloading WaT IM 12E01A06 01E 4 Worksheet for Operation Parameter Setting Setting Level Code Setting Parameter Display Default Value SETPOINTS Alarm setting Low alarm setpoint See page 6 7 010 0 NTU Analog output range setting Fixed range for output 1 or fixed range for output 2 Local range for output 1 or local range for output 2 LCL 1 or LCL 2 See page 6 7 0100 00 NTU FIXR 1 1000 00 NTU FIXR 2 0 Hold parameter setting Hold function enabled or hold function disabled Last measured value or fixed value Fixed value for output 2 See page 6 9 H LST Last measured value 22 0 mA IM 12E01A06 01E Customer Model TB750G EIS Maintenance Right Angle Scattered Light Turbidimeter Parts List
179. unction selection See page 6 21 FunctionofcontactouputS2 S2 3 Maintenance CODEA4A4 Delay time hysteresis setting See page 6 22 Delaytime D TIME Hysteresis wyst 7 CODE50 Auto return function selection See page 6 22 D Auto return function enabled or disabled O Disabled CODE51 Alarm setting function selection See page 6 23 Mi Alarm setting function enabled or disabled MODE 0 Disabled CODE52 Password setting See page 6 23 Password sii ass 000 CODE54 Negative nondisplay nonoutput selection See page 6 24 Negative nondisplay nonoutput enabled MINUS 0 0 Disabled or disabled Disabled CODE61 Turbidity unit selection See page 6 24 1 Turbidity unit UNT Jo CODE64 Software version display See page 6 24 Software version display VER 100 tt CODEO66 Error 2 error level selection See page 6 25 Errorlevels of errors E201 to E206 20 6 1 2222 CODE67 Error E3xx error detection selection See page 6 25 Emordetectionfor E301 to E306 301 6 1 14217 Emordetectionfor E307 307 dde Ermordetectionfor E311 to E316 311 6 111117 OO T Emordetectionfor E337 317 IM 12E01A06 01E Service Level 3 Worksheet for Operation Parameter Setting App 3 Code Setting Parameter Display Defa
180. urns from the setting or service level to measurement mode For details refer to Section 6 1 4 Selecting the Last Measured Value H LST or a Fixed Value H FIX Factory Default H LST When Enabled H ON is selected H LST or H FIX will appear on the message display To hold the output signal at the measured value immediately before the hold function is activated press the YES key when H LST is shown To hold the output signal at a specified value press the YES key when H FIX is shown To toggle two options press the NO key Setting a Fixed Value for Output 1 H mA1 Factory Default 22 0 mA When a Fixed Value H FIX is selected H mA1 will appear on the message display prompting you to enter a output current value at which the output signal is held Change the default value if necessary to the desired value using the gt and keys and press the ENT key to accept If the entered value is outside the setting range 02 0 to 22 0 mA error E352 will occur Setting a Fixed Value for Output 2 H mA2 Factory Default 22 0 mA When a Fixed Value H FIX is selected H mA2 will appear the message display prompting you to enter a output current value at which the output signal is held Change the default value if necessary to the desired value using the gt and keys and press the ENT key to accept If the entered value is outside the setting range 02 0 to 22
181. ution using the gt and keys and press the ENT key e g 20 00 5 The turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 6 After the self adjustment is complete the message display will show CAL END Open the drain valve after the detector to drain the span calibration solution Open the sample water supply valve to supply the water sample to the detector It will take time for the complete replacement of the calibration solution in the measurement cell with the water sample Putting the converter in measurement mode 1 When CAL END is shown on the message display press the YES key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level a HOLD display in step 2 is not shown Calibration is now complete Note After a 2 point calibration a zero point correction or a sensitivity correction the turbidity meter will not show the value indicated on the check block even if the check block is installed in zero solution in measurement mode The value on the check block is valid only for STD CAL 7 MAINTENANCE
182. valve to supply zero water to the detector 2 Close the drain valve after the detector When the measurement cell is filled with the water open the drain valve to drain 3 Repeat steps 1 and 2 at least three times to wash the inside of the measurement cell Supplying zero water 1 By adjusting the zero water supply valve supply the zero water to the detector at a flow rate of 1 to 3 l min 2 Check that the zero water is drained from the detector Then close the drain valve 3 To wet the zero turbidity filter allow the zero water to run at a flow rate of 1 to l min for approximately 20 minutes If the filter has been already wet allow the zero water of approximately 10 litters to run Performing a zero calibration 1 After the reading has stabilized close the zero water supply valve 2 The message display should show STD CAL Press the YES key to accept a calibration using standards 3 On the message display ZERO will appear Press the YES key to accept a zero calibration 4 On the message display VALUE will appear and on the data display 0 000 should appear Press the ENT key 5 The turbidimeter starts a calibration self adjustment with the flashing entire data display Wait for a while Note Pressing the ENT key during the self adjustment will abort the calibration Do not press any keys unless you want to abort the calibration 6 After the self adjustment is complete the message display will sh
183. w 123 5 102 5 67 5 Vent to the atmosphere Tube size 219 ID Hose coupling 205 5 Drain Tube size 219 ID Hose coupling 38 for fixing hole 38 for fixing hole 390 for fixing hole Sample water inlet f Rc3 8 te ite A 2 Er N y y Sample water outlet to detector Rp1 2 Drain TS socket type Nominal 20A 226 2 ID Figure 3 21 Simple Head Tank IM 12E01A06 01E Unit mm F3 30E ai 3 INSTALLATION PIPING AND WIRING 3 27 Flow Control Valve Simple Head Tank Sample Water Vent Effluent TB750G c Sample Water Detector Drain Sample Water Valve Drain X gt lt Valve Sample Water Drain Valve Drain Zero W Valve Tap Water ero Vater P Z Drain Zero Water Supply Valve 57 Zero Water pes ZN Drain Valve Xx Other Turbidity Detectors Zero Turbidity Filter L F3 31E ai Figure 3 22 Piping Diagram Installation and Piping of the Simple Head Tank 1 To the sample water inlet of the detector attach a 3 way tee or appropriate fitting corresponding to the inlet s connection size 1 2 or 1 2 NPT This allows switching of the sample flow and the zero water flow Install the simple head tank with the four M5 bolts supplied by customer so that the head tank is positioned higher than the detector To the sample water inlet Rc3 8
184. w CODE Set the data display to 73 using the gt and keys Then press the ENT key Checking the operation of the contact input for details see Figure 6 37 1 Check that the message display shows DI T Contact input test display 2 The data display shows the current status of each contact input by 0 Non action or 1 Action Each digit of the data display corresponds the contact input as follows Data display XX Digit No 1 2 Digit description 1 Contact input 1 INT COM 2 Contact input 2 IN2 COM 3 Put the contact input terminal non action state open or action state closed corresponding digit of the contact input must show the status accordingly 4 Upon completion of check press the ENT key to exit from the contact input test mode Putting the converter in measurement mode 1 Check that the message display shows SERV Press the MODE key 2 The message display should show HOLD Press the NO key to exit from the maintenance state output is held and return to measurement mode Note If the analog output hold function has been set to Disabled H OFF in SET HOLD mode at the setting level a HOLD display in step 2 is not shown Test is now complete If the test finds a defect the converter need replacement for example of contact relays Contact our Service IM 12E01A06 01E 7 MAINTENANCE 7 25 7 11 Replacing the Zero Turbidity Filter Element The zero turbidity filter

Model TB750G Right Angle Scattered Light Turbidimeter

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