B series baths
Contents
1. toe cha tied 9 ACHIEVING THE BEST RESULTS USING YOUR METAL BLOCK CALIBRATOR 10 PROBE POSITIONING AND USE OF 10 THERMALGONTACT A p o acia 10 WSE OF CUSTOM ee ee obi 11 USE GF TWINS INSERTS 2 A roe Pec a 11 SUPPLY VOLTAGE VARIATIONS 2 21 sse nn anna nn nn anno nn nn aan enn nn anna nn nan EEEE EEEE 11 AMBIENT TEMPERATURE ese isset anna nana nnnaanannns 11 THE INDEPENDENT INDICATOR IF 000 0000000 12 FACTORY oxk ee 12 LINEARISING THE INDEPENDENT 12 SPEGIEIGATIONS nene e a A en eh tae 16 GENERA PM 16 ENVIRONMENT REOR e 16 CLEANING AND MAINTAINANCE conan 17 BEEANING NOE E A 17 PREVENTATIVE MAINTENANCE 140 0 ne v due deat 17 GENERAL SAFETY WARNING 17 INTERNAL FUSE REPLACEMENT 2 2 eoe te ettet od eerte Pert eta o hr 17 PERIODIC MA2. 5 5 Supply Voltage Variations As with all electrical equipment your B series Metal Block Calibrator is designed to operate most efficiently on a stable electrical supply Transient variations in supply voltage will vary the quantity of heat output by the Heating element and may adversely affect the temperature stability of the Calibrator Users should therefore make every effort to ensure a stable supply during testing and calibration 5 6 Ambient Temperature Variations The Calibrator is unaffected by changes in ambient temperature taking place over several hours Sudden temperature changes will cause a temporary disturbance in block temperature For best results we recommend that the Calibrator is used in a draught free environment of constant temperature B550 14 002 11 Issue 7 8550 amp 700 Operator s Handbook 6 The Independent Indicator if fitted The calibrator may be optionally fitted with an independent temperature monitor The monitor is linked to a 5 way DIN connector and terminal block on front of the controller see Appendix 2 for wiring details To use the independent monitor connect a PRT to either the DIN connector or the terminal block insert the PRT into the block The monitor will now display the block temperature in degrees Centigrade If you have ordered an Independent Indicator to be set up in thermocouple mode then a thermocouple needs to be connected instead of a PRT Connections for the interfac
3. Users operating at low temperatures may benefit from improving contact by the use of a little demineralized water in the block holes In this case the few drops of water required should be introduced into a cold block with the supply disconnected Under no circumstances should any other fluid be used as this will cause a build up of residue and may present a fire hazard Any remaining water should be removed from the Calibrator at the end of the test by inverting the Calibrator Care should be taken to avoid any hot inserts falling out of the inverted block ASL provide a standard block which is drilled to accommodate 4 T100 type PRTs directly inserted in the block The dimensions of these holes are optimised for the T100 and should not be used for other probe types A further 4 Inserts see below are also provided with the standard block WARNING Insertion of the incorrect probe type into these holes may result in inaccurate measurements and or the probe becoming stuck in the block In addition to the predrilled holes ASL provides inserts which can be factory drilled to order or drilled by our customers to accommodate different types of probe As may be seen from the test results in Appendix 1 the temperature difference between inserts may be several tenths of a degree As previously observed for the probe block contact area the contact area between the insert and the block may vary B550 14 002 10 Issue 7 8550 amp B700 Operator s
4. safety cut out tested gt ASL offer a comprehensive service for all its products Consult your distributor for details Alternatively a technical procedure for verifying operation of the cutout is available from ASL s customer support group This operation B550 14 002 17 Issue 7 8550 amp 700 Operator s Handbook should only be carried out by a suitably qualified engineer 9 Service and Warranty Block Bath equipment and accessories unless stated otherwise are covered by a 12 month warranty for parts and labor but not including costs incurred in returning it to the factory for repair from the date of dispatch from Automatic Systems Laboratories 91 Technical Support For all technical support repair warranty and service inquiries please contact Customer Support Group Automatic Systems Laboratories Inc 15 Unions Street Suite 410 Lawrence 01840 USA Telephone 978 658 0000 Fax 978 658 5444 E Mail aslinc aslinc com Web page www asico com 9 2 Returned Instruments All returned goods should be sent carriage paid insured and packed well to the above address 9 3 Documentation The shipment should include i Your goods return note a delivery note or an export invoice stating clearly GOODS RETURNED FOR REPAIR ii Your Company Establishment order or contract reference number iii The name of your purchasing and technical contact iv A brief fault report 9 4 Repair Quotat
5. 250 6 3 Amp Quick blow 3 2 Power ON OFF switch Power ON O Power OFF The power switch itself will be illuminated green when the Block Calibrator power is switched ON Care should be taken not to limit access to the power ON OFF switch 3 3 Operating Mode Auto Manual Key Low Key High Key Function Key Figure 2 The Controller keys B550 14 002 5 Issue 7 8550 amp B700 Operator s Handbook Whilst operating the controller will show two temperatures on the controller panel and the supply switch will be illuminated The temperature shown at the top of the controller display is a block temperature At start up this can be expected to be close to room temperature unless the calibrator has been used recently The lower of the two displayed temperatures is the controller set point For safety all equipment leaving the factory is set to 20 C 68 F The last setpoint is retained in the controller memory 3 4 Setting the Temperature i Press the Function Key as shown above ii The lower display will change to SP set point iii Use the up arrow or the down arrow keys to set the desired temperature on the upper display The calibrator will begin to heat or cool Keeping the up or down arrow key depressed will cause the rate of the displayed setpoint to accelerate Momentary release of the button will bring the rate of change back to a low speed iv After entering the new set point the operator may return t
6. Handbook 11 Appendix 2 Wiring connections for DIN connector INDEPENDENT INDICATOR Figure 9 Wiring Diagram for Independent Indicator B550 14 002 20 Issue 7 550 8 700 Operator s Handbook 12 Appendix 3 Factory Settings Description Parameter RESOLUTION REQUIRED Configuration Deg DegC Deg Deg F Input Code 7220 7222 7221 7223 7220 7221 Output 1 Action Ctrl rEU rEU Alarm 1 Action ALA1 P Lo Alarm 2 Action ALA2 P hi hi Alarm Inhibit Inhi nonE Output 2 Usage USE2 Or r Orr Lock Code Loc 8 Initially 10 8 10 Setup Mode Digital Filter Time Constant Filt Process Variable Offset OFFS Output Power Outi Proportional Band 1 Pb1 Rate Integral Time Constant rSEt 0 32 0 46 0 46 0 32 0 32 Rate Derivative Time Constant rAtE 0 08 0 11 0 11 0 08 0 08 Manual Rest Bias biAS Set Point High Limit SPhi Set Point Low Limit SPlo Output 1 Power Limit OPhi Output Cycle Time Process Low Alarm 1 1 2 2 Loop Alarm Enable LAEn Auto Pre Tune Enable Apt Manual Control Enable PoEn Setpoint Ramp Enable rPEn Communications Enable CoEn 0 1 if RS485 fitted 0 or 1 A R Lock value bes E E eem Factory default WARNING Read section 3 5 before altering the controllers parameters in particular the setpoint limits Exceeding the maximum temperature may cause permanent damage B550 14 002 21 Is
7. Handbook and the inclusion of a second metal air metal boundary will degrade the accuracy that can be obtained when using inserts To obtain maximum accuracy the customer has two routes to solving this measurement problem 5 3 Use of custom drilled blocks ASL can provide custom drilled blocks to accommodate most types of probe This method insures the minimum number of metal air metal boundaries between the reference probe and the probes under test and is ideal for the customer who wishes to qualify multiple probes simultaneously Remembering that the probes should all be of the same type including the Reference probe 5 4 Use of Twin Inserts ASL recommends the use of inserts drilled to accommodate 2 probes within the same insert These Twin inserts may be factory or customer drilled and allow the qualification of up to 4 different probe types in one calibration run Each insert must contain one reference probe and one probe under test ASL is happy to provide blank inserts for our customers to drill themselves Due to the possibility of inserts becoming stuck in the block if incorrectly sized we recommend the use of factory supplied blanks Twin inserts should be placed in the block as shown in the Fig 3 in order to ensure that the probes under test are equi distant from the centre of the block The locating spigot at the bottom of the well will then engage x WARNING Figure 3 Recommended orientation for twin inserts
8. controller of 0 to 800 C It is for this reason the P I D terms will change with this increased input range B550 14 002 8 Issue 7 8550 amp 700 Operator s Handbook 4 The Serial Interface for the controller if fitted The controller may be optionally fitted with an RS232 or an RS485 interface Refer to the WEST 6100 controller manual for instructions on using the RS232 RS485 Connections for the interfaces are RS485 25 Way D type socket A or XMT terminal Pin 2 B or XMT terminal Pin 15 RS232 25 Way D type socket CTS Pin 5 RxD Pin 3 TxD Pin 2 DTR Pin 20 GND Pin 7 DSR Pin 6 41 Factory Default Settings RS232 Factory set to 4800 baud even parity 7 data bits and 1 stop bit RS485 As above Address 1 B550 14 002 9 Issue 7 8550 amp B700 Operator s Handbook 5 Achieving the best results using your Metal Block Calibrator This section of your manual is written to help you achieve the best results from your Metal Block Calibrator ASL has tested this product extensively and the results of these tests can be found in the appendices of this manual Your Metal Block Calibrator is designed to provide a reference temperature of high stability under the correct operating conditions The absolute value of this temperature must be measured using a reference temperature probe The indicated temperature on the temperature controller is not calibrated and cannot be used as a reference
9. probe holes of the block The use of a few drops of demineralised water to improve probe block contact when calibrating below 70 C 94 F is permissible with great care Do not introduce water into the Calibrator unless the block is cold and the supply is disconnected Drain the water by inverting the Calibrator after use Do not boil off remaining water Care should be taken to avoid any hot inserts falling out of the inverted block vii The Calibrator may be switched off and disconnected from the supply without harm even when at maximum temperature However the cooling of the block will take considerably longer if this is done and no temperature indication will be present to warn others that the block may still be hot The block will take several hours to cool to ambient temperature if the fan is left running approximately 5 hours to cool to ambient temperature from 550 C 1022 F viii If any part of the Calibrator except the block should become hot during use suspend the operation and disconnect the supply 2 2 Removing the inserts i Use the wire tool to lift the insert Only lift the insert to a level where you can hold it using the pliers Do not try to completely remove the insert using the wire tool The wire tool does not provide enough control to allow it to be used to carry the insert ii Using the pliers lift the insert clear of the block and put it in a safe place 2 3 Over temperature cut out ASL Metal Block Calib
10. 1 2 2 2 2 3 550 amp 700 Operator s Handbook Table of Contents INTRODUCTI N PNE 3 ridet T EI 3 REMOVING THE INSERTS un a eae ie deme D ev E ue d e aue POE Vs 4 OVER TEMPERATURE 4 SETTING UP THE 5 GETTING vol ee el 5 24 a nee 5 OPERATING O D apo LL m 5 SETTING THE TEMPERATURE oot O 6 CONTROLLER SETTINGS ame ae 6 s 7 SELFSTUNE 25 Cade dace Acad 7 CHANGING FROM CENTIGRADE TO FAHRENHEIT MODE 7 CHANGING TO 0219C RESOLUTION 8 THE SERIAL INTERFACE FOR THE CONTROLLER IF 9 FACTORY DEFAURTSETTINES Be ee AE een
11. 700 Operator s Handbook The controller will now display the operating parameters which can be scrolled through to note the values Do this by repeatedly pressing the scroll key when back at the start press scroll and up together to exit and the set LED will extinguish To Alter the range from C to F the input range code has to be changed a list of these codes can be found in Appendix A of the West Instruments Site Manual The relevant range codes are listed under the title For RTD Inputs The default codes for units leaving the factory are given in Appendix 3 of this manual To enter the new range the configuration mode has to be accessed To do this turn the power off Turn the power back on and within 30 seconds of power up hold down the up and scroll keys simultaneously for five seconds The controller will then show the current input code selected This can be changed with the up and down arrow keys As soon as the value is changed the upper display will flash indicating that the new value has yet to be confirmed when the value is as required it may be confirmed by pressing the hand key whereupon the display will become static Next return from the configuration mode by pressing scroll and up together Having returned the display will show the temperature but with all the decimal points showing indicating that the controller parameters need resetting Note If the input code is changed the values in the set up mode will retu
12. ASL can provide a calibrated reference probe and indicator installed in the Calibrator or alternatively a more versatile and accurate standalone system Please ask your representative for details 51 Probe positioning and use of inserts To ensure the connect orientation of twin holes inserts in the Metal Block Calibrator the Calibrator is fitted with location spigots in each well When fitting inserts ensure that the locating hole in the bottom of the insert mates with the locating spigot The top surface of the block is not insulated and therefore has a greater heat loss than the sides and bottom of the block This gives rise to a variation in temperature at different vertical positions in the block see Appendix 1 The block is designed to achieve the minimum possible variation in temperature at any horizontal plane within the block To avoid inaccuracies caused by the vertical temperature variations explained above the user should use a reference probe of the same type as the probe under test If this is not possible the reference probe should be designed to match the physical and thermal characteristics of the probe under test as closely as possible The insertion depth of the Test probe measure point should be exactly the same as the reference probe measure point 5 2 Thermal Contact To achieve the best possible accuracy all probes that are inserted in the block should have the largest possible contact area with the metal of the block
13. Avr 0 024 Ch2 from Avr 0 038 Ch Var from Avr 0 003 Var from Avr 0 002 Var from Ave 0 022 Var from Avr 0 048 Insert Channel Avr 97 795 Maximum Variation between Insert probes Insert Channel Avr 196 952 Maximum Variation between Insert probes Ch1 Var from Avr 0 118 Varmax Insert 0 218 DegC Ch1 Var from Avr 0 095 Varmax Insert 0 299 DegC Ch3 Var from Avr 0 059 Ch3 Var from Avr 0 158 ChS Var from Avr 0 100 ChS Var from Avr 0 078 Ch Var from Avr 0 041 Ch Var from Avr 0 141 Figure 7 Block at 125 Degrees Celsius Figure 8 Block at 200 Degrees Celsius 125 lt gt 200 c 5 EL 1245 ES 199 6 128 E 198 1235 amp 8 197 123 3 5 196 1225 5 195 5 122 5 1215 194 150 140 130 120 110 100 90 80 70 60 150 140 130 120 110 100 90 80 70 60 Depth of PRT insertion into Block mm Depth of PRT Insertion into Block The graphs above Figure 7 at 125 C and Figure 8 at 200 C show the vertical gradient of temperature in the B550 block The PRT used was the T100 250 The resulting temperature gradient is exaggerated by the insertion depth of the PRT itself to the point where the detector within the PRT is near the top surface of the block The stem losses of the PRT will increase as more surface area is expossed to the air This cooling affect will again reduce the actual temperature B550 14 002 19 Issue 7 8550 amp B700 Operator s
14. INTENANCE 2 22 coe a leet edd ke wb d cue tua deut 17 B550 14 002 1 Issue 7 550 8 700 Operator s Handbook 9 SERVICE AND 18 9 1 TECHNICA KSUPPORTE 20 575226 ert iet 18 9 2 RETURNED INSTRUMENTS bea ty deca el 18 9 3 DOCUMENTATION re leis ede 18 9 4 REPAIR QUOTATIONS 2 2 taie tree cy b Le a aa 18 10 APPENDIX 1 PERFORMANCE CHARTS 19 11 APPENDIX 2 WIRING CONNECTIONS FOR DIN 20 12 APPENDIX 3 lt 5 21 550 14 002 2 Issue 7 8550 amp 700 Operator s Handbook 1 Introduction Automatic Systems Laboratories would like to thank you for purchasing this B series
15. Metal Block Calibrator The Calibrator is supplied in a fully operational state but ASL strongly suggest that these brief operating instructions and guidelines be read before starting to use the apparatus Should you have any difficulty understanding the instructions or other questions regarding this Calibrator please call our Customer Support Group 2 Safety WARNING This apparatus is capable of reaching up to 700 C in normal operation Burns to the skin can result through careless or negligent use The calibrator has been configured at ASL only change the configuration settings after reference to this handbook Please follow the guidelines below as a minimum procedure for safe operation i Always handle the Calibrator as if the block is hot Do not touch the top surface of the block ii Position the Calibrator in such a way that it cannot be accidentally knocked from the bench Pay careful attention to the positioning of the mains lead to avoid tripping iii Do not cover the Calibrator at any time or leave flammable material close to the Calibrator iv When removing hot probes from the block always place them away from flammable material and make sure that they will not be accidentally touched by anyone Keep all types of liquids away the Calibrator when in operation Figure 1 Model B550 with Independent Indicator B550 14 002 3 Issue 7 8550 amp 700 Operator s Handbook vi Do not use any liquid in the
16. dicator will then be continuously OFF indicating that the Pre Tune facility is disengaged Note Since the Pre Tune facility is a single shot operation it will automatically disengage itself once the operation is complete 3 7 Self Tune Facility The self tune facility as opposed to the pre tune method can be set on at anytime and will attempt to modify the terms whilst controlling We don t recommend that this feature is left on permanently because it can affect the stability at the resolution we are looking for The self tune facility is invoked by pressing and holding both up and down keys simultaneously until the AT light blinks once Then release the keys and press the hand symbol key The AT light will then illuminate permanently to show that self tuning is in progress To cancel the same procedure is employed Note The Self Tune facility will not engage if the setpoint is currently ramping 3 8 Changing from Centigrade to Fahrenheit mode The Calibrator can operate in Centigrade or Fahrenheit mode Firstly the controller parameters need to be noted if they are different to the default ASL settings for example where different P I D terms are used To do this enter the LOC code default 8 set by ASL by pressing the scroll button and the up arrow together the display will show ULOC in the lower section Enter the LOC code using the up and down arrows and press scroll to accept B550 14 002 7 Issue 7 8550 amp
17. es are RS485 25 Way D type socket A or XMT terminal Pin 2 B or XMT terminal Pins 14 15 RS232 25 Way D type socket TxD Pin 2 RxD Pin 3 GND Pin 7 CTS 1 Linked internally 5 5 4 DSR Linked internally 6 DTR 1 20 6 1 Factory Default Settings The Independent Indicator is factory set to 9600 baud 8 bit no parity and 1 stop bit 6 2 Linearising the Independent Indicator The following instructions tell you how to linearise the Independent Indicator The Indicator must initially be set to suit the reference probe and temperature range of the block See Figure 4 Range Resolution Accuracy 200 to 850 C 0 1 C 0 5 C 60 to 130 C 0 02 C 0 5 C B550 14 002 12 Issue 7 8550 amp 700 Operator s Handbook The reference Pt100 probe and block has to be calibrated as a system to give the required number of temperature pairs expected and actual up to a maximum number of 17 The above temperature pairs are then entered into the linearisation feature of the independent indicator CSLin using the calibration procedure See Figure 5 Note The setup menu is selected by pressing the AL1 and F1 keys simultaneously The expected readings test temperature are OU 1 to OU 17 The actual readings Indictor reading are IN 01 to IN 17 The system is then calibrated a second time and the initial errors between the t
18. est temperature and the Block II Independent Indicator should be reduced Example 1st calibration results at 5 points Test Temperature Indicator Reading 49 861 50 2 100 012 100 1 249 102 249 2 419 875 420 2 549 890 550 1 Enter the data pairs as below INO1 50 2 OU 01 49 861 02 100 1 OU 02 100 012 03 249 2 03 249 102 04 420 2 OU 04 419 875 IN 05 550 1 OU 05 549 890 B550 14 002 13 Issue 7 550 8 700 Operator s Handbook B550 700 Set up Procedure QG 8 To next section of manii press Display Figure 4 Independent Indicator initial set up B550 14 002 14 Issue 7 8550 amp B700 Operator s Handbook WO Lode A gt PES E Cpa Expected reading to required amount of points Actual reading o Expected reading Key press CD Display Figure 5 Independent Indicator Calibration Procedure B550 14 002 15 Issue 7 7 Specifications 71 General Well Depth mm B550 amp B700 Operator s Handbook Well Dia Insert Temperature range in normal Stability mm Length ambient of 22 C mm 35 C to 550 C 95 F to 1022 F 7 2 Environment Operating Temperature Humidity Power Requirements 50 C to 700 C 122 F to 1292 F 15 C to 25 C for full accuracy 0 C to 50 C maximum Specified to 90 RH at 40 C non co
19. ions We shall be pleased to advise estimated repair costs upon receipt and initial inspection of returned goods B550 14 002 18 Issue 7 8550 amp 700 Operator s Handbook 10 Appendix 1 Performance charts 8550 Block Calibrator Test data at 50 DegC 26 01 94 Statistics cas cas 50 056 49 346 50 027 49 380 50 039 49 543 50 054 49 369 Median 50 056 49 347 50027 49 382 50 038 49 543 50053 49 370 Standard Deviation 0 019 0 010 0 017 0 013 0 017 0 010 0 018 0 010 Variance 0 000345 0 000108 0 000281 0 000164 0 000296 9 13 05 0 000333 9 26 05 Skowness 0 206308 0 12379 0 228795 2 64972 0 184023 0 02925 0 04435 0 09848 Range 0 092 0 046 0 081 0 101 0 085 0 039 0 097 0 039 Minimum 50 014 49 322 49 991 49 3 49 999 49 523 50 49 349 Maximum 50 106 49 358 50 072 49401 50 084 49 562 50 097 49 388 Sum 4755 336 4638 524 4752 592 4641 764 4703 626 4657 001 4705 076 4540 725 Count 95 94 95 94 94 94 94 94 Stability mK 46 23 405 505 425 19 5 48 5 19 5 Direct Channel Avr 50 044 Maximum Variation between Direct probes Var from Avr 0 012 Varmax Direct 0 029 DegC Ch2 Var from Avr 0 017 Var from Avr 0 005 Ch Var Avr 0 010 Insert Channel Avr 49 410 Maximum Variation between Insert probes 1 from Avr 0 064 Varmax Insert 0 197 DegC Figure 6 Ch3 from Avr 0 029 Ch5 Var from Avr 0 133 Ch7 Var from Avr 0 040 8550 Block Calibrator Tes
20. ndensing 240VAC 10 15 220VAC 10 15 120VAC 10 15 100 10 15 Frequency range 47 63 Hz Power consumption B550 550 VA Max B700 550 VA Max Dimensions 305mm wide 165mm depth 325mm height 12 wide 6 5 depth 12 8 height Weight B550 7 5 Kg 16 5 lbs B700 9 Kg 19 8 Ibs B550 14 002 16 Issue 7 8550 amp 700 Operator s Handbook 8 Cleaning and Maintainance 8 1 Cleaning Make sure the Block Calibrator is turned off and unplug the mains supply cable Clean the outside of the instrument with a soft clean cloth dampened with mild detergent Do not allow water to enter the instrument WARNING Never use alcohol or thinners as these will damage the instrument Never use a hard or abrasive brush gt 8 2 Preventative Maintenance WARNING Regular inspection of the mains supply cable is required to ensure that the insulation is not damaged gt 8 3 General safety Warning WARNING If the Block Calibrator is used a manner not specified by ASL then the protection provided by the instrument may be impaired gt 8 4 Internal fuse replacement WARNING The 85232 to RS485 converter if fitted is protected by an internal fuse It is recommended that this is replaced by a competent ASL trained technician gt Fuse type T200mA 250 200mA slow blow 8 5 Periodic Maintenance WARNING The block calibrator should be checked every 2 years to have
21. o the previous display by pressing the Function Key a second time Note if this step is omitted the display will return automatically after some seconds v The upper display shows the actual block temperature the lower display shows the new Set Point temperature vi Depending on the ambient temperature and the set point temperature the controller will take some time to stabilise at the new temperature The stabilisation process is best watched by reading the reference probe inserted in the block It is normal for the calibrator controller to indicate an overshoot of some degrees on the first approaching a new setpoint 3 5 Controller Settings The Calibrator controller has been set to optimise stability over the full operating range of temperatures Customers who wish to customise these settings to optimise a particular temperature are referred to the WEST 6100 handbook supplied with the unit ASL cannot accept any responsibility for damage caused by incorrect setting of the controller parameters by our customers The Controller configuration settings should not be changed under any circumstances as these relate to the range and alarm functions Customers are advised to note the configuration settings on their unit before making any changes See appendix 3 for factory settings The controller can be set to tune its own P I D parameters This is not normally necessary except when a greatly varying load high thermal loss to the block occur
22. rators are fitted two independent over temperature cut outs which are operated by a Excessive block temperature b Fan failure To reset the calibrator press the start switch If the light does not go out the fault condition still exists Allow the calibrator to cool before retrying WARNING DO NOT hold your finger on the start switch for more than a few seconds Pressing the start switch resets the thermal trip circuit and may apply power to the heater If the cut out activates repeatedly check the controller settings if these are correct the calibrator has a fault DO NOT USE the calibrator until the fault condition has been removed See Section 8 5 for periodic maintenance B550 14 002 4 Issue 7 8550 amp 700 Operator s Handbook 3 Setting up the Calibrator The Calibrator is designed to give the best performance when operated in a constant temperature environment without draughts The calibrator should therefore be positioned away from air conditioners and direct sunlight Please read Section 5 of this manual to achieve the best results from the Calibrator 31 Getting Started WARNING Ensure the correct line voltage fuse is fitted before turning on Plug in the mains lead and turn on the calibrator using the green switch marked supply on the top panel The cooling fan will start and the controller will start its self check procedure Voltage Fuse 230V F3 15A 250VAC 3 15 Amp Quick blow 115V F6 3A
23. rn to the default values WARNING The setpoint maximum SPhi will default to the upper limit of range as will the high alarm this would be 800 C or 1472 F with the 1 range To enter the set up mode use the LOC code as above and re enter the values noted down except the values in C or F which will need changing to the new scale This is very important for safety The alarm values will need particular care The default values can be found for C or F in Appendix 3 of this manual Another precaution would be to indicate on the front panel that the units are now set to Fahrenheit in case someone assumes Centigrade and sets the temperature dangerously high The block calibrator is further protected by an independent thermal cut out circuit 3 9 Changing to 0 1 C Resolution Operation to Change from 1 C resolution 700 C maximum temperature to 0 1 C resolution 537 C maximum temperature This is an operation virtually identical to changing from Centigrade to Fahrenheit where a new range of temperature measurement is chosen See Appendix 3 for the 4 ranges suitable for the Calibrator The controller parameters are cleared when the range is changed so if one range can be fixed upon all the better The code number for the Ambient to 537 C 0 190 range is 7222 the 1 C resolution range code is 7220 Now follow the procedure in section 4 9 to set in the new range code Note The range code 7220 invokes a range with the
24. s and the temperature stability of the block is affected B550 14 002 6 Issue 7 8550 amp 700 Operator s Handbook There are two methods of tuning Pre tuning and self tuning although the latter is not recommended as it can affect the stability at the resolution we are looking for 3 6 Pre Tune Facility Pre Tune may be activated as follows i With the Controller showing its normal Operator Mode display depress and hold down simultaneously the Up and Down keys whereupon the numeric displays will start to flash until AT indicator blinks once after approximately three seconds numeric displays will become static ii Release the Up and Down keys and depress and hold down the Scroll key for three seconds approximately If the process variable is greater that 5 of input span from the setpoint the AT indicator will then flash indicating that the Pre Tune facility is engaged and operating If the process variable is within 5 of input span from the setpoint or if an erroneous key sequence is used the Pre Tune facility will not be engaged To disengage the Pre Tune facility iii Depress and hold down simultaneously the Up and Down keys whereupon the numeric displays will start to flash until the AT indicator blinks once after approximately three seconds numeric displays will become static iv Release the Up and Down keys and depress and hold down the Scroll Key for three seconds approximately The AT in
25. sue 7 8550 8 700 Operator s Handbook 5 B550 14 002 22 Issue 7 550 8 700 Operator s Handbook 5 B550 14 002 23 Issue 7 8550 8 700 Operator s Handbook 5 B550 14 002 24 Issue 7
26. t data at 200 DegE 26 01 94 Statistics Cho cas 4 Statistica 2 Cas 99 137 97 677 9109 97 854 99 130 97 895 99 155 97 754 199 549 196 857 199 519 197 110 199 556 197 030 199 605 196 811 Median 99 139 97 677 99 110 97 855 99 131 97 895 99 156 97 755 Median 199 549 195 857 199 520 197 109 199 557 197 029 199507 196 812 Standard Deviation 0 014 0 009 0 015 0 009 0 014 0 009 0 014 0 009 Standard Deviation 0 014 0 008 0 014 0 009 0 014 0 010 0 013 0 010 0 057 0 042 0 071 0 039 0 063 0 042 0 06 0 043 Range 0 066 0 034 0 072 0 039 0 071 0 039 0 066 0 04 Minimum 99 107 97 656 99 074 97 834 99 097 97 873 99 122 97731 Minimum 199 513 196 839 199 479 197 09 199 516 197 008 199 569 196 788 Maximum 99 164 97 698 99 145 97873 99 16 97915 99 182 97774 Maximum 199 579 196 873 199 551 197 129 199587 197 047 199 635 196 828 Sum 7237 034 7032 761 7334 078 7045505 7236 49 7244 253 7337 499 7233 828 Sum 18358 48 18307 73 18555 28 18331 23 18558 66 18323 77 18563 28 18303 38 Count 73 72 74 72 73 74 74 74 Count 92 93 93 93 93 93 93 93 Stability mK 28 5 21 35 5 19 5 315 21 30 215 Stability mK 33 7 36 19 5 35 5 19 5 33 20 Direct Channel Avr 99 133 Maximum Variation between Direct probes Direct Channel Avr 199 557 Maximum Variation between Direct probes Var from Avr 0 004 Varmax Direct 0 046 DegC Var from Avr 0 008 Varmax Direct 0 086 DegC Ch2 Var from
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