Honeywell Searchpoint Optima Plus - 10.5 Bump Test (Gas Challenge) with Remote Gassing Cell (RGC); 10.6 Re-zero Searchpoint Optima Plus

MAN0905_Issue 7_07/17 Searchpoint Optima Plus with optional HART
®
output
Operating Instructions
2108M0550
45
10. Maintenance using
SHC1 Handheld Interrogator
Remote Gassing Cell
High Concentration
(v/v cell) Nozzles
1. Inspect the gassing pipes to the RGC. Ensure that the exhaust is clear and vents well away from the
Searchpoint Optima Plus, and does not cause a hazard.
2. Select Calibrate then Display. (This will inhibit the 4-20 mA output signal).
3. Apply50%v/vmethaneatarateof0.3litresperminutefor~30-60s.(Forlonggaspipes
 >~10m,allowalongertimeforthegastoreachSearchpointOptimaPlus).
4. Check that the Searchpoint Optima Plus responds to the test gas.
Note:Ifthegasreadingisnotacceptablefortheapplication,re-zerotheSearchpointOptimaPlusand
repeat the test.
5. Flush the RGC with zero gas until the gas reading has returned to zero.
6. Press Escape then Enter to release the 4-20 mA output signal.
7. Press Escape to return to the main menu.
10.6 Re-zero Searchpoint Optima Plus
Re-zero Searchpoint Optima Plus if it has given an unexpected response to a gas test. In most cases a
re-zero will restore accuracy and a full span calibration is not required.
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,t
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.