Honeywell Searchpoint Optima Plus - 7.5 Bump Test (Gas Challenge) with Remote Gassing Cell (RGC)

MAN0905_Issue 7_07/17 Searchpoint Optima Plus with optional HART
®
output
Operating Instructions
2108M0550
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7.5 Bump Test (Gas Challenge) with Remote Gassing Cell (RGC)
Usingatestgasof50%v/vmethaneintheRemoteGassingcell(RGC),agasresponsewillbegenerated
from most Searchpoint Optima Plus units. The reading depends on the target gas calibration of the unit.
The RGC is a tool to check for a gas response and is not precise; therefore variability in response between
units should be expected.
Caution: Gas readings will be generated during this procedure. Take appropriate action at the control
and monitoring system to inhibit signals.
Caution: Maximum ow rate is 0.3 litres per minute to avoid pressurising the gas in the RGC.
Note:ThisprocedureonlyappliesiftheSearchpointOptimaPlushasaRemoteGassingCell(RGC)tted.
TheRGCisafactoryttedoption.
Note:Duringtesting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 re-cycling the power.
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. 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).
3. 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.TheSHC1HandheldInterrogator,theHART
®
communication or the XNX Universal
Transmitter is required to re-zero the Searchpoint Optima Plus.
4. Flush the RGC with zero gas until the gas reading has returned to zero.
7. Maintenance