O2 And Combustibles Rcu Connections - Ametek Thermox 2000 ATEX Series User Manual

Figure 3-8.
RCU mounting
dimensions.
3.54
[89.92]
6.29 4.33
[159.86] [110.00]
O -Only RCU Connections
2
Make the following calibration gas connections to the RCU (see Figure 3-9):
1. Connect the span calibration gas to the span gas inlet on the RCU.
2. Connect the zero calibration gas to the zero gas inlet on the RCU.
3. Connect the calibration gas outlet on the RCU to the calibration gas
inlet on the sensor (see Figure 3-7 for the location of the sensor calibra-
tion gas inlet). Install the supplied check valve in this line as close
to the sensor as possible.
O and Combustibles RCU Connections
2
Make the following calibration gas connections to the RCU (see Figure 3-9):
1. Connect the span calibration gas to the span gas inlet on the RCU.
2. Connect the zero calibration gas to the zero gas inlet on the RCU.
3. Connect the combustibles span gas to the RCU combustibles span gas
inlet.
4. Connect tubing between the calibration gas outlet on the right side of
the RCU to the calibration gas inlet on the sensor (see Figure 3-9 for
sensor calibration gas inlet connection). Install the supplied check valve
in this line as close to the sensor as possible.
18.48
[469.38]
1/4" MOUNTING
HOLES 4 PLCS
9.45 5.91
[240.00] [150.24]
10.24
[260.01]
4.50
[114.23]
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Installation 3-17