Ultima OPIR-5 Detector
17
5. Secure the two front mounting screws. Verify that AJ is reduced by 2 or less (increase of
any amount is acceptable).
6. Adjust the Receiver pan for maximum AJ. Slowly tighten the nut at the bottom of the
pan-tilt assembly while holding the left side of the Receiver. Verify that the AJ is reduced
by 2 or less (increase of any amount is acceptable).
7. With the Receiver secure, verify that the AJ is comparable to typical values listed below.
8. At the Source, repeat steps 3 through 6 to adjust its position, while checking the AJ
number at the Receiver.
9. With the Source secure, verify that the AJ is comparable to typical values listed below.
Range
20 m
30 m
40 m
50 m
60 m
70 m
80 m
90 m
100 m
AJ value
72 to 67
65 to 60
59 to 54
53 to 48
49 to 43
45 to 38
43 to 35
39 to 32
35 to 30
Typical AJ Values
10. At the Receiver, put the magnet on the upper right edge of the display to exit alignment
mode. The unit will display a flashing AC and begin zeroing the gas reading. Once
zeroing is complete, the unit will display 0C, followed by the gas concentration. System
alignment is complete.
NOTE
:
The basic arm assembly offered by MSA to wall mount the system follows similar
alignment instructions, with the difference being the lack of a fine adjust.
3.7.4 Response
Test
After initial alignment, a test of the Ultima OPIR-5 Detector should be carried out using the
Test Gas Films for methane or propane (part numbers 329083-1 or 329084-1, respectively).
Follow the instructions on the films.
3.7.5 Visible
Light Filter
One of the OPIR-5 Detector’s configurations is equipped with a visible light filter (Figure 11).
Figure 11: Ultima OPIR-5 Source with Visible Light Filter
