Thermo Fisher Scientific Alpha DO 2000 - Manual (Page 40)

Instruction manual
Alpha DO 2000
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 relay A or relay B.
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.
The display shows the relay set point value for Relay A
and LED “A” lights. (The mode of the relay set point will
be with respect to the measurement mode before REL
key is pressed).
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.
SP1
%
60.0
%
40.0
Sp2
32