Bump Test (Gas Challenge) - Honeywell Searchpoint Optima Plus Operating Instructions Manual

MAN0905_Issue 7_07/17
13. Maintenance using HART
11. 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.
12. Slide the flow housing over the end of the Searchpoint Optima Plus and push until the flow housing is
firmly seated.
13. Re-fit the o-rings and retaining nuts.
14. Select Device Reset to clear any faults or warnings that may have been generated by cleaning.
15. Press OK to initiate a Device Reset.
Note: If any configuration changes have been made, wait 15 seconds before doing a soft reset or cycling
the power.
16. The display shows a confirmation message. Press OK.
17. The display shows a note that the Searchpoint Optima Plus will return to normal operation, press OK.
18. Select Inhibit.
19. Select End Inhibit and press Enter.
20. The display shows a confirmation message. Press OK to release the 4-20 mA output.
21. Return to the Welcome screen.

13.4 Bump Test (Gas Challenge)

Searchpoint Optima Plus can be functionally checked using an appropriate test gas.
Caution: Gas readings will be generated 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 unit should be powered up for 1 hour before a gas test is done.
1. Select Device Setup.
2. Select Calibrate.
3. Select Bump Test.
4. Select Start Bump Test and press Enter.
5. The display shows a confirmation message, press OK. The 4-20 mA output is now inhibited.
6. Fit a Gassing Cover to the Searchpoint Optima Plus.
7. Apply an appropriate test gas at a rate of 1 – 1.5 litres per minute for ~ 30 - 60 s.
8. Check that the Searchpoint Optima Plus responds to the test gas. The live gas concentration
is shown on the screen. The reading should be within ±20 % of target. When ready to continue
press OK.
Note: If the gas reading is not acceptable for the application, re-zero the Searchpoint Optima Plus and
repeat the test. Factors to consider when evaluating the gas response include: -
• Test gas and concentration
• Tolerance of the test gas concentration
• Atmospheric pressure
• Ambient temperature
• Wind speed
Communications
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Searchpoint Optima Plus with optional HART output
®
Operating Instructions
2108M0550
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