Honeywell Searchpoint Optima Plus - 19. Appendix 1 - SHC1 Additional Functions; 19.1 Changing the Target Gas

MAN0905_Issue 7_07/17 Searchpoint Optima Plus with optional HART
®
output
Operating Instructions
2108M0550
88
19. Appendix 1 –
SHC1 Additional Functions
19.1 Changing the Target Gas
Searchpoint Optima Plus is supplied with look-up tables for several different gases. If required, the gas
table can be changed to a different target gas.
WARNING
If a new gas table is selected, the Searchpoint Optima Plus MUST be re-calibrated using the
target gas.
Searchpoint Optima Plus stores a number of gas tables up to a maximum of 10. These include the Standard
Gases(Methane,Ethane,Propane,ButaneforHydrocarbonunits,EthyleneforEthyleneunits)plusany
SpecialGasesthathavebeenspeciedwhentheunitwasordered.(Forafulllistofgasesavailabletoorder
pleaseseeSpecication).
Caution: Searchpoint Optima Plus units contain a gas table called Linear 20R which is a factory
setting. DO NOT select this gas table.
1. Select Gas Tables then Show Library to view the gas tables available for the unit.
2. Press Escape.
3. Select Select Gas.
4. Scrollthroughtheavailableoptionstondthegasrequired.
5. Press Enter.
6. Display will read “Gas Selection OK”
7. Press Enter to release the 4-20mA output
8. PressEscape to return to the main menu.
9. Usinga½inch/13mmA/Fopenendedspanner,unscrewthetworetainingnutsandremovethe
Standard Weather Protection.
10. Fit a Calibration Cap to the Searchpoint Optima Plus. Ensure it is pushed on fully.
11. Select Calibrate then CalSensor. (This will inhibit the 4-20 mA output signal).
12. Ensure that there is zero gas present in the vicinity of the Searchpoint Optima Plus. If necessary,
 applyzerogasatarateof1–1.5litresperminute.
13. 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.
14. Press Enter to begin span calibration.
15. Press Enter.
16. Use and to set the concentration of the calibration gas. When it is correct, press Enter.
17.Applytestgasatarateof1–1.5litresperminute.Waitforthegasreadingtostabilise(~30-60s).
18.PressEnter.
When the process is complete the display will show Span Calibrated. It will then show an instruction to
remove gas.
19.RemovetheCalibrationCapandwaitforthetestgastoclear(~30s).Ensurethatthegasreadinghas
returned to zero.
20. Press Enter.
21.RettheStandardWeatherProtectionandthetworetainingnuts.
22. Press Enter to release the 4-20 mA output signal.
23. Press Escape to return to the main menu.