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12 Calibrating a pH measuring chain

12.2.2

Calibration default settings for pH sensors

Before you can perform a calibration, you must first enter the necessary calibra-
tion default settings. The possible settings for the pH Calibration are described
in the following.

Open the calibration default settings:
Device Menu

Calibration

Select Analysis Input for pH/Redox/NH

Cali-

bration Default Settings

NOTE!

The "Calibration Default Settings" menu appears in the Device menu only if a
user with corresponding user rights is logged in.

Chapter 8.2.1 "Log-on/Log-out", Page 74

Sample screen:
pH calibration default
settings

Содержание 202580

Страница 1: ...ar Multichannel Measuring Device for Liquid Analysis with Integrated Controller and Paperless Recorder Type 202580 Installations Instructions Volume 2 2 b20 2581 4en_b2 V2 00 EN 00614180 JUMO AQUIS to...

Страница 2: ...t is likely that a dangerous overdosage has occurred For this case appropriate precautionary measures must be taken NOTE Read this operating manual before putting the device into service Keep the oper...

Страница 3: ...rs 22 12 3 pH Calibration routines 24 12 3 1 Zero point calibration 24 12 3 2 Two point and Three point calibration 26 13 Calibrating Redox sensors 29 13 1 Notes 29 13 2 General information 29 13 2 1...

Страница 4: ...nductive 43 16 2 2 Calibration default settings for Ci conductivity sensors 44 16 3 Ci calibration routines 47 16 3 1 Calibrating the relative cell constant 47 16 3 2 Calibrating the temperature coeff...

Страница 5: ...and optional boards 70 18 4 Binary inputs base unit 70 18 5 Binary inputs optional boards 70 18 6 Binary outputs power supply unit board 70 18 7 Binary outputs optional boards 71 18 8 Voltage supply o...

Страница 6: ...Content...

Страница 7: ...country specific regulations must be ob served Step Action 1 Disconnect all phases of the voltage supply to the device power grid outside power supply sources for relays solid state relays etc 2 Ident...

Страница 8: ...r of the device To prevent connections being interchanged note down the assignment of the connectors to the sockets 4 Undo do not remove the two countersunk screws on the bottom of the case and remove...

Страница 9: ...wise at Step 12 10 Connect the inductive conductivity sensor using the M12 socket adapter from the scope of delivery of the Ci optional board to the Ci optional board of the device 11 Connect the 2 wi...

Страница 10: ...alibration has been performed the measuring input can be cal ibrated Following successful calibration the measuring input is ready for use NOTE For the Ci base calibration you need the JUMO Type 20271...

Страница 11: ...the board tempera ture at Device Menu r Service r Service Data r Internal Data tab Ensure that the ambient temperature specified for the device cor responds to the conditions for the normal operating...

Страница 12: ...res 5 Start the Ci base calibration Device Menu r Service r Ci Base Calibration IN 7 to 8 6 Enter the cell constant for the sensor and confirm by pressing OK 7 The device now performs a measuring with...

Страница 13: ...y pressing OK 10 Now follow the instructions on the display You will be requested to set certain resistance values on the cali bration adapter one at a time and then to confirm each measuring by press...

Страница 14: ...appears Confirm by pressing OK If the Ci base calibration fails the procedure is canceled without acceptance of the calibration data 12 Accept the calibration data acquired by pressing Yes discard th...

Страница 15: ...dification Calibration timers can be configured to provide a regular reminder of when cal ibrations are due v Chapter 9 10 Calibration timers Page 115 Each successfully completed calibration is record...

Страница 16: ...ards must undergo a basic calibration during the initial commissioning If this has not yet been performed it is necessary to do so prior to any other calibration v Chapter 10 2 Ci base calibration Pag...

Страница 17: ...tion Calibration values determined or entered Reference values used Calibration mode true calibration manual entry of calibration values Since this information does not yet fit in a screen line the lo...

Страница 18: ...es an overview of the calibrations performed Tapping the Details button opens the selected logbook entry in the detail view The detail view displays a table with all calibration values from a calibrat...

Страница 19: ...nected to analysis measuring inputs Redox zero point calibration Ammonia calibration Calibration value unit Zero point pH 5 6 to 8 9 Slope 75 89 6 to 103 1 110 Calibration value unit Zero point pH 2 t...

Страница 20: ...iversal inputs Calibration value unit Rel cell constant CR 50 75 to 125 150 Rel cell constant Ci 80 90 to 110 120 Calibration value unit Temperature coefficient CR K 0 to 8 Temperature coefficient Ci...

Страница 21: ...t calibration This calibration method is used to determine the pH zero point on the measure ment characteristic curve The Slope is retained A Buffer solution with a defined pH value is needed as a ref...

Страница 22: ...ings for the pH Calibration are described in the following Open the calibration default settings Device Menu r Calibration r Select Analysis Input for pH Redox NH3 r Cali bration Default Settings NOTE...

Страница 23: ...available standard solutions DIN 19266 NIST misc technical Buf fer solutions etc or customer specific information With the aid of such tables Buffer solutions can be recog nized automatically during c...

Страница 24: ...alibration Device Menu r Calibration r Select analysis input for pH Redox NH3 r Open Zero point calibration 2 If temperature compensation was not specified in the calibration default settings enter th...

Страница 25: ...lue of the Buffer solution used is contained in this Buffer set table If these pre requisites are satisfied the pH value of the Buffer solution is de termined automatically during the calibration 5 Wa...

Страница 26: ...mpensation was not specified in the calibration default settings enter the temperatures of the Buffer solution here manually If temperature compensation was specified the temperature of the Buffer sol...

Страница 27: ...this Buffer set table If these pre requisites are satisfied the pH value of the Buffer solution is de termined automatically during the calibration 5 Wait until the measuring value displayed stabilize...

Страница 28: ...12 Calibrating a pH measuring chain 28...

Страница 29: ...f con centration values The Redox potentials of 2 solutions are measured Concentration values in percent are then assigned to the measured values by the user Two process typical sample solutions are n...

Страница 30: ...nes that are not enabled are not visible in the calibration menu Additional calibration default settings are explained in the following table NOTE The Calibration Default Settings menu appears in the...

Страница 31: ...oint Calibration 3 Check that the Redox test solution value displayed matches the Redox value of the test solution The Redox test solution value is taken from the calibration default values It is stil...

Страница 32: ...rode and immerse it in the first test solution Wait until the measuring value displayed stabilizes and then con firm the result of the measurement by pressing OK 5 As in step 3 enter the concentration...

Страница 33: ...n e g water is needed as a reference 14 2 2 Calibration default settings for ammonia sensors In the ammonia sensor calibration default settings the zero point calibration is enabled and preconfigured...

Страница 34: ...r Zero Point Calibration 2 Clean the ammonia electrode and immerse it in the ammonia free test solution Wait until the measuring value displayed stabilizes and then confirm the result of the measureme...

Страница 35: ...used to compensate for the effect of tem perature when measuring the electrolytic conductivity When making a tempera ture compensated conductivity measurement the measuring value of the conductivity...

Страница 36: ...r Select CR Analysis Input r Calibration Default Settings The calibration default settings enable the calibration routines to be accessed in the particular calibration menu Calibration routines that...

Страница 37: ...ation Selection from analog selection Temperature input for automatic sensing of the test sample solution temperature during the calibration Reference tempera ture 50 to 150 C The conductivities of a...

Страница 38: ...s to perform calibrations v Chapter 8 2 1 Log on Log out Page 74 Step Action 1 Start calibration of the relative cell constant Device menu r Calibration r Select CR Analysis Input r Rel cell constant...

Страница 39: ...esult of the measurement by pressing OK The preset reference conductivity can be changed here manually if necessary 4 A protocol summarizing the calibration values determined then ap pears Acknowledge...

Страница 40: ...e sample solution Ensure that the rel cell constant is calibrated correctly if necessary make a trial measurement with a test solution For CR optional boards continue with step 3 for universal inputs...

Страница 41: ...ust control acquisition of the value manually Bring the temperature of the sample solution first to the value of the reference temperature and confirm by pressing OK Then proceed in the same manner fo...

Страница 42: ...15 Calibrating CR conductivity sensors 42...

Страница 43: ...Is used to compensate for the effect of tem perature when measuring the electrolytic conductivity When making a tempera ture compensated conductivity measurement the measuring value of the conductivi...

Страница 44: ...This requires in stallation of a temperature sensor that the device can use to sense the temperature of the sample solution 16 2 2 Calibration default settings for Ci conductivity sensors Before you c...

Страница 45: ...ng options Explanation Reference conductivi ty 0 to 9999 mS cm Conductivity of the reference solution Parameter Setting options Explanation Temperature com pensation Selection from analog selection Te...

Страница 46: ...g temperature 50 to 250 C The starting and final temperatures of the range for which a temperature coefficient curve is to be deter mined The starting temperature must be at least 20 C low er than the...

Страница 47: ...asic Ci calibration in the course of commissioning Subsequent calibration is not possible without this initial basic Ci calibration v Chapter 10 2 Ci base calibration Page 10 Step Action 1 Start calib...

Страница 48: ...esult of the measurement by pressing OK The preset reference conductivity can be changed here manually if necessary 4 A protocol summarizing the calibration values determined then ap pears Acknowledge...

Страница 49: ...erse it in the sample solution Ensure that the rel cell constant is calibrated correctly if necessary make a trial measurement with a test solution for Ci optional boards continue with step 3 for univ...

Страница 50: ...must control acquisition of the value manually Bring the temperature of the sample solution first to the value of the reference temperature and confirm by pressing OK Then proceed in the same manner...

Страница 51: ...mode continue with step 4 3 Enter one of the measuring ranges 1 to 4 Confirm the entry by pressing OK The calibration values determined apply only to the selected mea suring range 4 Bring the tempera...

Страница 52: ...16 Calibrating Ci conductivity sensors 52...

Страница 53: ...alibration method is used to determine the pH zero point on a measure ment characteristic curve The slope is retained A test solution with a defined value of the respective process variable is needed...

Страница 54: ...rent reference solutions Two test solutions with defined values of the respective process variable are needed as a references Calibrating rel cell constants temperature coefficients and TC curves The...

Страница 55: ...he particular calibration menu Calibration routines that are not enabled are not visible in the calibration menu The linear scaling operation mode permits adjustment of the zero point slope and two po...

Страница 56: ...t calibration default settings in the free chlorine pH T com pensated operation mode Parameter Possible settings Explanation Temperature com pensation Selection from Analog selection Temperature input...

Страница 57: ...on chapters for the pH value measurement and Conductivity measurement operation modes apply except that three point calibration for pH sensors is not available for universal inputs see Chapter 17 2 1...

Страница 58: ...result of the measurement by pressing OK 3 Enter the reference value of the test solution Confirm by pressing OK 4 A protocol summarizing the calibration values determined then ap pears Acknowledge th...

Страница 59: ...e it in the second reference solution Wait until the measuring value dis played stabilizes and then confirm the result of the measurement by pressing OK 5 As in step 3 enter the reference value of the...

Страница 60: ...17 Calibrating universal inputs 60...

Страница 61: ...s only displayed and can no longer be changed here Without automatic sensing the particular influencing variable must be entered manually here Wait until the measuring value displayed stabilizes and t...

Страница 62: ...17 Calibrating universal inputs 62 6 Press Yes to accept the Calibration values determined and enter the Calibration in the Calibration logbook Press No to discard the results Step Action...

Страница 63: ...ith customer specific characteristic lineb b Customer specific linearization can be used to enter a sensor characteristic line up to 400 2 wire 3 wire 0 to 400 0 1 of Rmax c c Rmax maximal resistance...

Страница 64: ...earization can be used to enter a sensor characteristic line up to 400 2 wire 3 wire 0 to 400 0 1 of Rmax d d Rmax maximal resistance across the measuring range 400 4000 or 100 kW 100 ppm K to 4000 2...

Страница 65: ...ax d d Rmax maximal resistance across the measuring range 400 or 4000 100 ppm K to 4000 2 wire 3 wire 0 to 4000 0 1 of Rmax d 100 ppm K Voltage signal 0 to 10 V 0 2 of MRa 100 ppm K Current signal 0 4...

Страница 66: ...ural water with expanded range TDSb ASTM D 1125 95 for neutral NaCl acidic HCl and alkaline NaOH impurities b TDS Total Dissolved Solids Cell constant 0 01 to 10 cm 1 Measuring range selectionc c In t...

Страница 67: ...0 to 25 HNO3 36 to 82 H2SO4 0 to 28 H2SO4 36 to 85 H2SO4 92 to 99 HCl 0 to 18 HCl 22 to 44 b TC temperature coefficient Cell constant 4 00 to 8 00 cm 1 Measuring range selectionc c In the Configuratio...

Страница 68: ...erature rangeb b The temperature compensation natural water with expanded temperature range extends beyond the standardized temperature thresholds of DIN EN 27888 0 to 100 C ASTM D 1125 95 neutral alk...

Страница 69: ...the device Impedance converters must not be installed in the measuring circuit The maximal admissible cable length between sensor and device is 10 m Liquid resistance has a direct impact on the measu...

Страница 70: ...nnecting proximity switches Recommended types are Wachendorff P2C2B1208NO3A2 and Balluff BES M12EG PSC80F BP03 1 Hz 300 ms 300 ms Configurable as potential free con tact or ext voltage supply maximal...

Страница 71: ...voltages such as those that can occur during switching 1 A at AC 230 V Wear free PhotoMOS e solid state relay Switching out put with PhotoMOS d d PhotoMOS is a registered trademark of Panasonic 200 mA...

Страница 72: ...parity 1 to 254 9600 19200 38400 Spring cage terminals Protocol Data formatsa a Specification in useful bit stop bit parity format Therefore the frame always comprises 8 useful bits and 1 stop bit Onl...

Страница 73: ...5 e mail tem plates can be stored up to 3 recipients for each e mail template Modbus TCP IP Process data exchange with Modbus usersb b Modbus TCP IP enables Modbus users to communicate via a LAN provi...

Страница 74: ...the firmware a The recording function stores measurement data in a ring buffer inside the device b Service data can be stored on a USB flash drive for diagnostic purposes USB flash drive USB port Type...

Страница 75: ...lectrical connection at the back via screw terminals Specifications for conductor cross sections v Chapter 6 2 2 Conductor cross sections for base unit and power supply unit Page 31 electromagnetic co...

Страница 76: ...mm with Ci conductivity sensor 283 3 mm including manoeuvring space for sensor cable Panel thickness Max 5 mm Minimum distance to other operating equipment from edge of the panel cut out horizontal 3...

Страница 77: ...s For each controller channel 2 outputs configurable as pulse length output pulse frequency output maximal 240 pulses per minute continuous output Disturbance feedforward con trol multiplicative and o...

Страница 78: ...nary values The sum total of both groups is indicated sufficient for approx 31 million entriesc History functiond d The history function allows the user to scroll the diagram back in the recording tim...

Страница 79: ...79 18 Technical data...

Страница 80: ...18 Technical data 80...

Страница 81: ......

Страница 82: ...36035 Fulda Germany Phone 49 661 6003 0 Fax 49 661 6003 607 E mail mail jumo net Internet www jumo net JUMO House Temple Bank Riverway Harlow Essex CM20 2DY UK Phone 44 1279 63 55 33 Fax 44 1279 63 5...

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