Re-Zero Searchpoint Optima Plus - Honeywell Searchpoint Optima Plus Sicherheitshandbuch

MAN0921_Issue 1_05/12
3. Proof test using HART
Optical Beam
15. Confirm that a fault is generated on the 4-20 mA output, either locally or at the controller.
Note: The 4-20 mA output can be monitored either at the control room or locally with a multimeter. When
connecting or disconnecting a multimeter, power off the Searchpoint Optima Plus, otherwise the unit will
indicate a latched warning that the 4-20 mA loop was broken. If this occurs it can be cleared by performing
a Device Reset.
16. Remove the blockage from the beam.
17. Select Inhibit.
18. Select Start Inhibit and press Enter.
19. The display shows a confirmation message. Press OK. The 4-20 mA output is now inhibited.
20. Ensure that the large sealing O-ring in the body of the flow housing, and the two small O-rings which
go below the retaining nuts, are clean and in good condition. Replace if in doubt.
21. Slide the flow housing over the end of the Searchpoint Optima Plus and push until the flow housing is
firmly seated.
22. Re-fit the O-rings and retaining nuts.
23. Select Device Reset to clear any faults or warnings that may have been generated by cleaning.
24. Press OK to initiate a Device Reset.
25. The display shows a confirmation message. Press OK.
26. The display shows a note that the Searchpoint Optima Plus will return to normal operation, press OK.
27. Select Inhibit.
28. Select End Inhibit and press Enter.
29. The display shows a confirmation message. Press OK to release the 4-20 mA output.
30. Return to the Welcome screen.

3.2 Re-zero Searchpoint Optima Plus

Caution: During this procedure the 4-20 mA output will be inhibited automatically. If the procedure is
aborted, ensure that the unit is not left in Inhibit mode.
Note: the calibration routine will timeout after 2 minutes of inactivity.
1. Select Device Setup.
2. Select Calibrate.
3. Select Gas Calibration.
4. The display shows a warning message, press OK.
5. Ensure that there is zero gas present in the vicinity of the Searchpoint Optima Plus. If necessary, fit a
Gassing Cover and apply zero gas.
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Searchpoint Optima Plus
Safety Manual