Ametek Thermox CEM O2/TM, Руководство пользователя

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3-6 | Thermox CEM O2/TM
Factory-Provided Remote Calibration Unit Setup
This section shows how to use the optional factory-provided Remote Cali-
bration Unit (RCU) to connect your zero and span calibration gases, and
to switch between the sample and calibration gases.
See the “Wiring” section in this chapter for help on how to connect
wiring between the control unit and the RCU.
Mount the RCU to a vertical surface as close to the sensor as possible.
Shorter calibration plumbing improves response times, reduces calibration
gas expense, and reduces the chance of contaminants in the calibration
gas plumbing. The maximum ambient temperature for the RCU should be
less than 160°F (70°C).
Do the following to mount the RCU (see Figure 3-3):
Mount the RCU to a wall with two #10 screws. You will need to remove
its lid to expose these mounting holes. Only the upper left and lower right
holes are used; the other holes hold the box to the base plate.
Figure 3-3.
RCU mounting
dimensions.
NOTE

15
.2
4
15
.8
8
10
.1
6
9.
53
1.
27
11.00 5.56
2.19
1/4" mounting holes
.64cm (2 places)
14
.0
0
0.
95
Z Purge option
Flowmeter
Inches
Centimeters
in bottom of box.
6.29
15.98
9.25
23.49
6.
00
6.
25
4.
00
4.33
5.
51
0.
38
0.
50
3.
75