eutech-instruments alpha ph 190 18 din phorp controllertransmitter Benutzerhandbuch
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Symmetrical mode:
For noisy electrical environments, the alpha pH 190 controller offers
Symmetrical Mode operation. To take advantage of Symmetrical
operation, you must have an electrode with a solution ground
(potential matching) pin, such as the EC-ARGTSO-05B or EC-
100GTSO-05B.
If your electrode does not have a solution ground, be sure to set the
controller to Asymmetrical mode.
Symmetrical mode avoids grounding the reference electrode by
reconfiguring the input to a floating differential mode. The electrical
noise appears equally on the pH and reference electrodes, and is
therefore rejected by the operational amplifier.
Symmetrical Mode operation. To take advantage of Symmetrical
operation, you must have an electrode with a solution ground
(potential matching) pin, such as the EC-ARGTSO-05B or EC-
100GTSO-05B.
If your electrode does not have a solution ground, be sure to set the
controller to Asymmetrical mode.
Symmetrical mode avoids grounding the reference electrode by
reconfiguring the input to a floating differential mode. The electrical
noise appears equally on the pH and reference electrodes, and is
therefore rejected by the operational amplifier.