Ultima OPIR-5 Detector
16
blank 3
seconds
Software revision letter
2 seconds
SU (Start Up)
2 minutes
0 (Gas Concentration)
Ongoing
The Ultima OPIR-5 Detector contains a heater circuit to remove condensation from the
windows. The unit should be allowed to stabilize for approximately two hours before
continuing with the setup mode.
The resolution of the display is the either 0.1 LEL
●
m or 100 ppm
●
m. Since HART, Modbus,
and 4-20 mA outputs have more resolution, the least significant digit of the displayed value
might not agree with that of other outputs.
3.7.3 Alignment and Adjustment
Ensure that there is no significant amount of background gas when the unit is setting the zero
value, as this will alter the Ultima OPIR-5 Detector’s performance. If there is gas present, try
setting-up the Ultima OPIR-5 Detector on a breezy day, as this dissipates the gas.
1. It is recommended that two people are involved in aligning the Extended Range Unit.
One person should be at the Source and one person should be at the Receiver. An
alignment scope is helpful but not necessary. Otherwise follow the general Alignment and
Adjustment instructions.
2. At the Source, check the four screws that hold the unit to the pan-tilt assembly. Verify
that the back two screws have been tightened but that the front two have not. On the
pan-tilt assembly, verify that the front and back fine adjust screws are flush with the
assembly surface, to allow full movement of tilt. If necessary, use a 2.5 mm hex wrench
to adjust the screws. Use the housing sights to aim the unit at the center of the Receiver.
Align the notch and pin of the sights with the Receiver center.
3. At the Receiver, check the four screws that hold the unit to the pan-tilt assembly. Verify
that the back two screws have been tightened but that the front two have not. On the
pan-tilt assembly, verify that the front and back fine adjust screws are flush with the
assembly surface. Use the housing sights to aim the unit at the center of the Source.
Verify that the Receiver display is 0. Put the magnet on the upper right edge of the
display. The display will change from 0 to rst, ---, SE, and AJ (Adjustment). Remove the
magnet when AJ appears. The Receiver will display “A” with an AJ value from 0 to 99 or
“]-[“ if no Source signal is detected. Note that in 60 minutes, the alignment mode will time
out and return to run mode. If this occurs, reapply the magnet and return to alignment
mode.
4. At the Receiver, lightly tighten the front fine adjust screw until it bottoms out against the
internal tilt lever. Slowly make a small turn to tighten the screw and lower the front of the
Receiver. Wait a few seconds for the AJ number to settle. Continue making small turns,
waiting after each turn for the AJ number to settle. Once the AJ number begins to
decline, back out the front fine adjust screw until it is flush with the assembly surface.
Lightly tighten the back fine adjust screw until it bottoms out, and then slowly make a
small turn to further tighten it. Wait a few seconds for the AJ number to settle. Continue
until the AJ reaches its maximum and begins to decline. Back out the back fine adjust
screw.
