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The signal from the preamplifier of the pH meter

2009-02-15View Original

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The signal from the preamplifier of the PH meter applies voltage to the terminals of the reference electrode and the measuring electrode of the meter; a resistor can be connected to the terminals of the thermal resistor to check whether the meter is functioning properly. But if there is no preamplifier in the meter, is it still possible to conduct measurements by applying voltage? If so, to which terminals should the voltage and resistor be connected?

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