Re-Zero Searchpoint Optima Plus; Bump Test (Gas Challenge); Bump Test (Gas Challenge) For A Unit Fitted With A Standard Weather Protection; Bump Test (Gas Challenge) For A Unit Fitted With A Flow Housing - Honeywell Searchpoint Optima Plus Sicherheitshandbuch

MAN0921_Issue 1_05/12
SHC1 Handheld Interrogator
14. Re-fit the O-rings and retaining nuts.
15. Press Escape then Enter to release the 4-20 mA output signal.
16. Press Escape to return to the main menu.
17. Select Diagnose then Soft Reset to clear any faults or warnings that may have been generated by
cleaning.
18. Press Escape to return to the main menu.

2.2 Re-zero Searchpoint Optima Plus

1. Select Calibrate then CalSensor. (This will inhibit the 4-20 mA output signal).
2. 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.
3. Press Enter.
When the process is complete the display will state Zero Calibrated. It will then show options to continue to
a span calibration, or to exit calibration.
4. Press Escape to exit calibration.
5. Press Enter to release the 4-20 mA output signal.
6. Press Escape to return to the main menu.
Note: If the option to Calibrate Span is selected in error, press Escape.

2.3 Bump Test (Gas Challenge)

2.3.1 Bump Test (Gas Challenge) for a unit fitted with a Standard
Weather Protection
Searchpoint Optima Plus should be functionally checked using an appropriate test gas.
Caution: Gas readings will be generated during this procedure.
Note: The unit should be powered up for 1 hour before a gas test is done.
1. Fit a Gassing Cover to the Searchpoint Optima Plus, if not already in place.
2. Apply an appropriate test gas at a rate of 1 – 1.5 litres per minute for ~ 30 - 60 s.
3. Check that the Searchpoint Optima Plus responds to the test gas.
4. Remove the Gassing Cover and wait for the test gas to clear (~ 30 s). Ensure that the gas reading has
returned to zero.

2.3.2 Bump Test (Gas Challenge) for a unit fitted with a Flow Housing

Searchpoint Optima Plus should be functionally checked using an appropriate test gas.
Caution: Gas readings will be generated during this procedure.
Note: The unit should be powered up for 1 hour before a gas test is done.
1. Apply an appropriate test gas, using the same flow rate as the sampling system in which the Searchpoint
Optima Plus is installed.
2. Check that the Searchpoint Optima Plus responds to the test gas.
3. Apply zero gas and wait for the gas reading to return to zero.
2. Proof test using
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Searchpoint Optima Plus
Safety Manual