USER MANUAL AD331 • AD332 Waterproof Portable Meters for EC
Contents
1. indi cation then enters the measurement mode AutoLOG GLPSETUPMTC ATC ECTDS SHIFT me s D caL cma OmPoitCustom DATE TIME Ta GERE e To save battery life the auto off feature automatically turns the meter off after 5 minutes with no button pressed This feature can be disabled through the AoFF setup item see Setup section for details 11 TAKING MEASUREMENTS Immerse the probe into the solution to be tested The sleeve holes must be completely submerged Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve If needed press RANGE AD332 until the EC or TDS range is selected on the LCD Allow for the reading to stabilize The primary LCD displays the measurement in the selected range while the secondary LCD shows the temperature reading gt F a T yaa ml ma Lis aa a Ll ss TE an m LOG ON DEMAND To store current reading into memory press STORE key from measurement mode The LCD will display for a Lo few seconds the Stor mes 2 L ar sage together with the Log ee tag and the sample number IS By pressing the STORE key a complete set of informa tion is memorized date time EC or TDS and tempera ture readings Up to 250 samples can be stored into memory When the memory is full and To the STORE key is pressed the CIO sample will not be stored and ILL the LCD will display2. and then SETUP before confirming 24 EC CALIBRATION EC calibration is performed for both meters For AD332 since the TDS values are automatically derived from the EC readings no specific calibration for TDS is needed Selectable points for EC calibration are 0 00 84 0 and 1413 uS cm 5 00 12 88 80 0 and 111 8 mS cm e Rinse the probe with selected standard or deionized water then immerse it into the cali bration solution The sleeve holes must be completely submerged e Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve e To enter calibration mode press the CAL key from the corresponding measurement range Note For AD332 pressing CAL when TDS range is selected has no effect 17 e For zero calibration simply leave the dry probe in the air The CAL and BUFFER tags light up e The primary LCD displays the not calibrated EC or TDS reading while the secondary LCD shows one of the available standard values The hourglass symbol blinks If necessary use the arrow keys to select the desired standard value e When the reading is stable the CFM tag starts blink ing Press CFM to confirm calibration non o J10 a Ige The instrument displays the Stor Good message and returns to measurement mode 18 SETUP Setup mode allows to view and modify the instrument parameters To enter setup mode press SHIFT and then SETUP key from measure
3. reference temperature is changed the temperature coefficient must be manually adjusted by the user For example if a is the coefficient with refer ence temperature of 25 C when changing the temperature to 20 C the new coefficient can be calculated with the following formula B o 1 0 20 If o 1 90 C then B 2 10 C For AD332 always set reference tempera ture to 25 C when measuring TDS 16 The following table lists the setup items their valid range and the factory settings default Item Description Valid values Default tc Temperature coefficient 0 00 to 10 00 C 1 90 tcE Temp compensationmode Atc Mtc notc Atc rEF Reference temperature 15 0to30 0 C 25 0 C tdS TDS factor 0 40 to 1 00 0 50 CELL Cell constant K 0 500 to 1 700 1 000 AoFF Auto off feature On Off Off amp Printer Status On Off Off YEAr Year 2000 to 2098 2000 DATE Date DD MM 01 01 to 31 12 01 01 TIME Time hh mm 01 01 to 23 59 00 00 id Meter identification code 0000 to 9999 0000 vEr Firmware release For AD332 only 25 Use the arrow keys to change the value If there is another part of the item to be set e g month in setting up the current date press RANGE or NEXT and the part to be changed will start blinking Use the arrow keys to change the value and then press CFM to confirm Note To escape without changing the previously set value press SHIFT
4. 16 characters line baud rate 9600 9 pin RS232 input 4 BATTERY REPLACEMENT When batteries become too AEG weak the bAtt message ap oop pears It is recommended to re KALE place the batteries soon When the battery level is too low to ensure reliable read ings the meter automatically turns off Battery replacement must only take place in a safe area and us ing the battery type specified in this instruction manual To replace rundown batteries re move the battery cover and sub stitute all four 1 5 V AA alkaline batteries with new ones while paying attention to the correct po larity Reattach and tighten the battery cover making sure that the gas ket is in place Note When batteries are removed the meter can re member date amp time for about 5 minutes After that it will be necessary to set again date amp time through the setup procedure 37 Press CFM to print the setup report or CAL to exit with out printing When a reading is logged on demand od an automatic printout will providethe Record No 001 5 Date 2000 01 01 following information for EC or TDS mina fe its EC 83 2 mS C 25 0 PC INTERFACE AD332 only Data transmission from the instrument to the PC can be done with the ADSW10 Windows compatible software optional ADSW10 offers graphing and on line help feature and data can be exported to the most popular spreadsheet programs for further an
5. USER MANUAL A wA AD331 AD332 Waterproof Portable Meters for EC and TDS Measurements AD 332 EC TDS Meter ADWA HUNGARY Kft Als kik t sor 11 6726 Szeged Hungary Tel 36 62 317878 Fax 36 62 550 610 www adwainstruments com MANAD3JI g t www adwainstruments com Dear Customer Thank you for choosing an Adwa product Please read carefully this manual before starting operations This instrument is in compliance with the EMC directive 2004 108 EC and its standards and Low Voltage Directive 2006 95 EC and its standards for electrical equipments For additional technical information please e mail us at sales adwainstruments com WARRANTY Adwa warrants this product to be free of defects in material and workmanship as stated in the operating manual If repair or adjustment is necessary and has not been the result of abuse misuse or improper handling within the warranty pe riod please contact your dealer or the nearest Adwa Office for the RGA Return Goods Authorization number to put on the outside of your package Warranted service will be made with out charge The meter is warranted for a period of 2 years while probes are warranted for 6 months The warranty pe riod commences from the original date of sale Warranty is only valid when the product is used under normal conditions and in accordance with the instruction manual The warranty is void if the instrument is repaired or serviced by unautho riz
6. alysis To connect the instrument to a PC use the AD9551 serial communication cable optional Make sure that the instrument is switched off and plug the cable to the instrument RS232 socket and to the PC serial port Specifications Isolated 8 bit data transmission Baud rate 2400 Start bit 1 Stop bit 1 Parity bit none 36 All models are supplied complete with e AD76309 conductivity probe with built in tempera ture sensor and m cable e Calibration solution 20 ml sachet each e 1413 uS cm EC standard solution 12 88 mS cm EC standard solution e 1 5 V AA alkaline batteries 4 pcs e User manual TECHNICAL DATA EC Range 19 99 199 9 1999 uS cm 19 99 199 9 mS cm TDS Range 9 99 99 9 999 ppm AD332 9 99 99 9 ppt Temperature Range 9 9 to 120 0 C Resolution 0 01 0 1 1 wS cm 0 01 0 1 mS cm 0 01 0 1 1 ppm 0 01 0 1 ppt 0 1 C Accuracy 1 f s EC and TDS 20 C 68 F 0 5 C EC Calibration Offset 0 0 uS cm Slope 1 point with 6 memorized standards 84 0 1413 uS cm 5 00 12 88 80 0 111 8 mS cm or one custom value Temperature Automatic or manual Compensation 9 9 to 120 C Temperature Selectable Coefficient from 0 00 to 10 00 C When in GLP mode the printout pro GLP vides the following information TORCE 10 0009 Date 2000 01 01 Time 00 34 Cell 0 961 Cal Buffer EC 8 00 mS SETUP REPORT 2 When in SETUP mo
7. de the follow instr ID 0005 ing information are printed Data 2000 01 04 Time 00 34 TC 01 90 TCE Atc Temp REF 25 0 TDS Factor 0 50 Cell 1 000 AutoOfft OFF Printer on Version 1 0 kr When exiting the setup mode the instrument asks if the setup report has to be printed The Prn message will be displayed together with the printer symbol and the CFM tag blinking i 35 PRINTING AD332 only When connected to an external serial printer a com plete set of information can be printed Use the AD9551 serial communication cable optional Printer specifications at least 16 characters line baud rate 9600 9 pin RS232 input Data can be printed on demand from measurement GLP and SETUP modes by pressing SHIFT PRINT keys or automatically for log on demand mode Note To cancel printing press SHIFT PRINT again While in EC measurement mode the printout provides the following information Date 2000 01 01 Time 00 19 EC 83 2 mS C 25 0 Note For TDS measurement mode the TDS reading will be printed TDS Factor Selectable from 0 40 to 1 00 AD332 only default value 0 50 Reference Temperature Selectable from 15 0 to 30 0 C Log on demand Up to 250 samples Probe included AD76309 PC Interface amp Printer AD332 only RS232 port external serial printer Battery Type 4x 1 5 V AA alkaline batteries Battery Life Approx 200 h of co
8. ed personnel not used in accordance to the instructions or if non Adwa accessories such as buffer solutions probes etc are used in conjunction with the meter Adwa will not be held responsible for any accident whether directly or indi rectly caused by the use of this instrument 2 PROBES AND SOLUTIONS AD76309 AD70030P AD7030 AD70031P AD7031 AD7033 AD7034 AD7035 AD7039 AD70442 AD9551 Conductivity probe with built in tem perature sensor DIN connector and 1 m cable 12 88 mS cm EC solution 20 ml sachet 25 pes 12 88 mS cm EC standard solution 230 ml bottle 1413 uS cm EC standard solution 20 ml sachet 25 pcs 1413 uS cm EC standard solution 230 ml bottle 84 uS cm solution 230 ml bottle 80 00 mS cm EC standard solution 230 ml bottle 111 80 mS cm EC standard solution 230 ml bottle 5000 uS cm EC standard solution 230 ml bottle 1500 ppm TDS standard solution 230 ml bottle Serial communication cable 39 PROBE MAINTENANCE After measurements rinse the probe with clean water If a more thorough cleaning is required remove the probe sleeve and clean the probe with a cloth or a non abra sive detergent Make sure to reinsert the sleeve onto the probe properly and in the right direction a ee J er tT jk After cleaning the probe recalibrate the instrument TABLE OF CONTENTS TntrOGU cton EMEA RV 4 Technical Data cs stina ina 6 Front and Top Panels ness
9. ing on the LCD is the meter id code GLP mn a Lis ty By repeatedly pressing RANGE or NEXT key all GLP data are displayed as shown in the next pages 26 TEMPERATURE COMPENSATION Three options are available for temperature compensa tion 1 Automatic ATC the EC probe features a built in temperature sensor which allows automatic compen sation of the EC or TDS measurements Manual MTC the temperature value can be manu ally set using the arrow keys The compensation is referenced to the selected reference temperature While in MTC mode the C tag blinks on the second ary LCD No compensation No TC the temperature is not taken into account The reading displayed on the pri mary LCD is the actual EC or TDS value Notes The default compensation mode is ATC Temperature compensation setting can be ac cessed through the tcE setup item see Setup section for details If the temperature compensation is active mea surements are compensated using the tempera ture coefficient default value 1 90 C 15 The temperature coefficient can be modified through the tc setup item see Setup section for details If the temperature reading is out of the 9 9 to 120 0 C range and the ATC option is selected the temperature full scale value and the C tag will blink on the secondary LCD The reference temperature can be set from 15 to 30 C When the
10. ment mode The SETUP tag lights up The primary LCD will display the temperature coef ficient default value 1 90 C while the secondary LCD shows the code of the current setup item Select the desired setup item using the arrow keys then press CFM to select and edit the setup item The cur rent value of the selected item starts blinking if the pa rameter can be modified eG amp TEMPERATURE ADJUSTMENT Temperature reading can be manually fine tuned as ex plained in this section Press SHIFT and CFM keys to enter the temperature adjustment mode Both primary and secondary LCDs will display the current temperature reading for a few seconds followed by the default temperature reading Adjust the temperature value on the primary LCD using the arrow keys The maximum allowed adjustment is 1 0 C around the current reading Press CFM to confirm The meter returns to measure ment mode and displays the new temperature Notes e Press SHIFT and CFM keys to escape without changing e To enter temperature adjustment mode the probe must be connected and the meter must be in ATC mode 22 Notes If the temperature is out of range the WRONG BUFFER TEMP message blinks on the LCD If the reading is too far from the expected value WRONG BUFFER blinks For best results use a calibration solution with EC or TDS value close to the sample to be measured During calibration the meter compensates u
11. ntinuous use Auto Off User selectable 5 min or disabled Environment 0 to 50 C RH max 95 Dimensions 188 x 96 x 70 mm Weight 460 g FRONT AND TOP PANELS AD 332 EC TDS Meter f a 235 e Press CFM to confirm deletion or SHIFT HOLD again to escape without deleting data Note Ifno samples are stored in memory and a dele tion is attempted the meter shows the Zero message and then returns to measurement mode HOLD FUNCTION To freeze the first stable reading on the LCD press the HOLD key from measurement mode The Auto and H tags will blink on the LCD until the reading is stabilized When the reading becomes stable the Auto and H O 1 4 us tags stop blinking and the read ing is frozen g 4 5 Press the HOLD key again to return to normal mea surement mode 33 DELETING STORED DATA The meter allows to delete a single sample or all the memory at one time To delete a single sample proceed as follows e Enter the viewing stored data mode and select the de sired sample number Press the HOLD key dEL and CFM will start blinking Press CFM to confirm deletion or HOLD again to escape without deleting data When scrolling through stored data if a deleted sample is selected the meter will display the nuLL message To delete all data in memory e Enter the viewing stored data mode e Press SHIFT HOLD keys dEL and CFM will sta
12. out following the cali bration procedure see Setup section for de tails e Temperature reading is not used during custom calibration 21
13. rt blinking and the ALL message is displayed on the secondary LCD 32 1 Probe holder 2 ON OFF key to turn the instrument ON and OFF 3 STORE MRCL key to store the measured data and to recall stored data 4 CAL SETUP key to enter exit calibration and setup mode 5 CFM key to confirm values 6 SHIFT key to activate the key alternate function Press and hold first the SHIFT key and then the second desired key 7 Down arrow PAPER key to manually decrease the value of temperature or other parameters and to pull out the printer paper 8 Up arrow PRINT key to manually increase the value of temperature or other parameters and to ob tain a printout or cancel printing 9 RANGE AD332 or NEXT AD331 lock key to select measurement unit or switch the focused data and to freeze current range on the LCD 10 HOLD GLP key to freeze the first stable reading on the LCD and to display Good Laboratory Prac tice information 11 Liquid Crystal Display LCD 12 DIN connector for conductivity probe 13 RS232 port for serial printer or PC connection OPERATIONAL GUIDE e Year a annm e The meter is supplied complete with four 1 5 V AA C LULL alkaline batteries Remove the battery cover unwrap er r the batteries and install them while paying attention to 13 their polarity see Battery Replacement section for Tie iog ant details Tr I e Connect the supplied probe to the DIN connector and ine
14. sing the 1 90 C coefficient If the setup item tc has been set to a different value when exiting calibration mode the displayed value might be different from the nominal standard value CUSTOM CALIBRATION Calibration can be also performed with a custom cali bration solution e Immerse the probe into the custom calibration solution and select the proper EC or TDS range Press first CAL to enter the calibration mode and then RANGE or NEXT to enter the custom calibration 19 e The CAL BUFFER and Cal Point Custom tags light up The primary LCD displays the not calibrated temperature compensated reading while the second ary LCD shows the temperature compensated read ing factory calibrated with cell value k 1 The hour glass symbol blinks IZ N E O as BUFFER LIL e Using the arrow keys adjust the reading displayed on the primary LCD to the desired value e The maximum adjustment is 40 around the value displayed on the secondary LCD e When the reading is stable the CFM tag starts blink ing Press CFM to confirm calibration 20 e The instrument displays the Stor Good message and returns to measurement mode Notes e Zero calibration is not allowed in custom mode e The calibrated custom value is considered the value of the calibration solution at the selected reference temperature e The cell constant value can be set directly through the CELL setup item with
15. the FULL message In this case it is necessary to delete the last sample or all logged data to proceed 29 Calibration with custom solu cup tion mm SN Co ES 3 Ifthe cell constant was changed after calibration through the CELL setup item this information is not displayed If RANGE or NEXT is pressed while the last param eter is displayed the meter returns to measurement mode Notes e To exit GLP mode at any time press SHIFT GLP e If calibration has never been performed after display ing the ID code the meter will show the no CAL message blinking Press RANGE or NEXT or SHIFT GLP to return to measurement mode e For AD332 only last EC calibration data are avail able No calibration data can be recalled for TDS If SHIFT GLP are pressed from TDS measurement mode the meter will display the ID code only Press SHIFT GLP again to return to measurement mode e GLP data are not affected by zero calibrations 28 Notes Ifthe meter displays only dashes the read ing is out of range Ifthe stability indicator hourglass symbol blinks the reading is not stable Make sure the meter is calibrated before taking measurements If measurements are taken successively in dif ferent samples for accurate reading it is recom mended to rinse the probe thoroughly with deion ized water before immersing it into the next sample For AD332 the TDS reading is obtained by m
16. tighten the threaded ring Make sure the probe sleeve i 5 is properly inserted e EC or TDS reading only 106 A dashes means reading r out of range or probe not D ee connected E 5 External serial Conductivity connector Temperature readin ICM onl JC probe E dashes means te L LI out of range fe To skip to next or previous sample use the up or down arrow key respectively For example if the up arrow key is pressed while a sample reading is displayed the meter shows the reading of next sample To return to measurement mode press SHIFT MRCL at any time VIEWING STORED DATA To retrieve memorized information press SHIFT and then MRCL keys The primary LCD displays the date day amp month and the secondary LCD shows the number of last stored sample Ifno samples are stored into memory the ZERO mes sage is displayed e Select the desired sample number using the arrow keys If the up arrow key is pressed while the last sample is displayed the meter returns to the first sample e Press RANGE or NEXT to view the remaining data for the selected sample as shown in the next page 30 INSTRUMENT START UP e Turn the instrument on by pressing the ON OFF key e At start up the display will show all used segments for a few seconds or while the button is held followed by the reference temperature value with rEF
17. ul tiplying the EC value by the TDS factor de fault 0 50 This factor can be selected by the user 0 40 to 1 00 through the tdS setup item see Setup section for details 13 AUTORANGING The EC and TDS scales are autoranging The meter automatically sets the scale with the highest possible resolution By pressing SHIFT and lock keys the autoranging feature is disabled and the current range is frozen on the LCD The uS mS ppm or ppt tag depend ing on the selected measurement mode and range starts blinking To restore the autoranging option press the SHIFT and lock keys again Note Autoranging is automatically restored if range is changed if setup or calibration mode is entered or if meter is turned off and back on again 14 Last calibration date day and month Last calibration date year Last calibration time Cell constant K Calibration with standard so lution 27 GOOD LABORATORY PRACTICE Good Laboratory Practice GLP is a set of functions that allows storage and retrieval of data regarding the status of the system After a successful calibration the meter automatically stores the date and time of calibration the used calibra tion solution and the resulting cell constant value All this information can be recalled by the user To view the last calibration data press SHIFT and then GLP keys The first information appear
18. usnineisocresorsuciu 8 Operational Guide 00000 000 10 ATILOTAN GING ax erri aaan a EPEE i avi 14 Temperature Compensation 00 00 0 seee 15 EG Calbf ti siss aka sebistecedeietetaen eenades 17 Temperature Adjustment 0000 eter 22 COU sneiru Sissa ska a R EAE 23 Good Laboratory Practice 26 L g Demades ska 29 Hold Function ass 053 anser iva tanna ad a 33 Printing AD332 Only 2 34 PC interface AD332 Only 36 Battery Replacement 00 0e0 eee 37 Probe Maintenance 0000000a0er er 38 Probes and Solutions cecinit 39 3 INTRODUCTION AD331 and AD332 are waterproof portable meters AD331 reads EC in 5 ranges and AD332 can measure EC and TDS Both models also read temperature The autoranging feature of the EC and TDS ranges automatically sets the instrument to the scale with the highest resolution Measurements are compensated for temperature ef fect automatically ATC or manually MTC It is also possible to disable the temperature compensation feature to measure the actual conductivity The temperature coefficient is user selectable These instruments also feature a measurement stabil ity indicator GLP capability and a user selectable ID code to uniquely identify the instrument Moreover AD332 includes PC interface and printing function Connect the meter to an external serial printer with the following printer specifications e at least
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