Ametek Thermox 2000 ATEX Series User Manual page 61

Figure 3-21.
Series 2000 controller
RCU connections.
Remote Calibration Unit Connections
If you don't have the remote calibration unit (RCU) option, skip this sec-
tion.
Oxygen-Only remote calibration unit connections
Remote Calibration Unit (RCU) connections on the Series 2000 control
unit wiring card, and their RCU connections, are as follows (see Figure 3-21):
ZERO - 13 on RCU
SPAN1 -15 on RCU
VALVE COMMON - 16 on RCU
Overall braided shield
or rigid metal conduit
All common wires
to pin 16 on RCU
and valve commons
on control unit
Remote cal
switch normally
open (dry
contact closure)
Installation
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