TPS 901-PH - Guard Connector Functionality; Checking the pH Sensor Reference Junction

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11.1.3 Temperature Compensation
The slope of a pH sensor (section 11.1.2) is affected by temperature. This effect
is compensated for either by using an Automatic Temperature Compensation
(ATC) sensor or by entering the sample temperature manually. Figure 11-3
shows the slope of a pH sensor at various temperatures.
-600
-400
-200
0
200
400
600
0 7 14
Electrode
Potential (mV) at
0 oC (54mV/pH)
Electrode
Potential (mV) at
50 oC (64mV/pH)
Electrode
Potential (mV) at
100 oC (74mV/pH)
pH Electrode Response, as a Function of Temperature
Electrode Response (mV)
pH
Figure 11-3
11.2 Polarisation Output Connector
The polarisation output connector on the rear panel is for Karl Fischer titrations.
This titration is a method for determining minute quantities of water in non-
aqueous liquids.
The TPS Double Platinum electrode (part no 122207) has two connectors. The
larger BNC connector fits to the Sensor socket and the smaller 3.5mm phono
plug fits to the Polarisation socket.
DO NOT PLUG THE DOUBLE PLATINUM ELECTRODE INTO THE
TEMPERATURE SOCKET.
When performing Karl Fischer titrations, ensure that the 901-PH is in mV mode.