Thermo Fisher Scientific Alpha pH 2000D - Manual (Page 33)

7 Relay Modes
You can control devices connected to Relay A, Relay B or wash relay via the front panel of the
transmitter. In Automatic mode, the transmitter’s set point values activate the relays. In
Manual mode, you can manually turn “on” and “off” the control devices connected to the relays.
7.1 View relay set points
To view relay set points, the relay mode must be set to automatic (standard mode after switch-on, relay
mode LED “Auto” lights).
While in Measurement mode press the REL key.
pH
The display shows the set point value for Relay A and LED “A” lights.
pH
2
After two seconds the display shows the set point value for Relay B and
LED “B” lights).
After two seconds the display shows the status of the Wash relay and LED
“W” lights. If Wash relay is “off” the display shows “WASH OFF”. If Wash
relay is “on” the wash interval time and wash duration is displayed.
After an additional two seconds the transmitter will return to Measurement
mode. off
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