Contents - wtw pH 540 GLP Handbuch

Safety guidelines ...................................................................................................................................................... 3
Contents .................................................................................................................................................................... 6
Recommended basic equipment for pH measurement............................................................................................ 8
Definition of symbols ................................................................................................................................................ 9
View of the instrument ............................................................................................................................................10
Front view ..........................................................................................................................................................10
Rear panel .........................................................................................................................................................11
Connections .............................................................................................................................................................12
Definition of control elements .................................................................................................................................14
Display ...............................................................................................................................................................14
Displayed symbols......................................................................................................................................15
Keypad...............................................................................................................................................................16
Setup.........................................................................................................................................................................17
Calibration ................................................................................................................................................................18
Selection of calibration procedure .......................................................................................................................18
Automatic calibration with DIN/NBS standard buffers: "AutoCal"..........................................................................19
pH measurement ......................................................................................................................................................22
Continuous pH measurement (without drift control AutoRead).............................................................................22
pH measurement with drift control AutoRead ......................................................................................................22
Measurement without temperature probe............................................................................................................24
Calibration without temperature probe ........................................................................................................24
pH measurement without temperature probe ..............................................................................................25
Temperature compensation ................................................................................................................................26
Further calibration functions ...................................................................................................................................27
Automatic calibration with a selection of Technical Buffers: "AutoCal Var" ...........................................................27
Conventional calibration with any buffer solutions: "ConCal"................................................................................30
Conventional 2 point calibration "ConCal" ...................................................................................................30
Conventional 1 point calibration "ConCal" ...................................................................................................32
mV measurement .....................................................................................................................................................34
Absolute voltage measurement...........................................................................................................................34
Relative mV measurement against offset voltage................................................................................................34
mV measurement without temperature probe .....................................................................................................36
Indication of time .....................................................................................................................................................37
Documentation - Storage .........................................................................................................................................38
Memory of measured values ..............................................................................................................................38
Storage of measured values .......................................................................................................................38
Readout of measured values ......................................................................................................................39
Clearing the memory of measured values ...................................................................................................41
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Contents

BA11101/05.00/Pla/pH540GLP-4