Honeywell Searchpoint Optima Plus - 3.2.3 Sampling system using Remote Gassing Cell (RGC); 3.2.4 Installation in a duct

MAN0905_Issue 7_07/17 Searchpoint Optima Plus with optional HART
®
output
Operating Instructions
2108M0550
21
3. Mechanical Installation
3.2.3 Sampling system using Remote Gassing Cell (RGC)
Thegasranges0–100%v/vmethane,0–600,000ppmpropaneand0–400,000ppmpropaneare
exclusively for use with the Remote Gassing Cell (RGC) in sampling systems.
6mm o/d
Sampling systems should be designed to comply with the Searchpoint Optima Plus operating conditions,
for example, sample temperature, cleanliness, water content, dust content etc.
The RGC has inlet and outlet gassing pipes with outer diameter 6 mm. The cell is not directional so either
pipe can be used as the inlet.
Note:TheSearchpointOptimaPluswilloftenbesuppliedwithaFlowHousingtted.Ensurethatthecorrect
gassing pipes are used. The gassing pipes for the RGC are the ones which support the retaining nuts for
theWeatherProtectionortheFlowHousing.
Inaddition,considerthefollowingpoints:-
1. Maximumowrateshouldbe0.3litresperminute.
2. Aowfailureindicatorshouldbeincludedinthesystem.
3. If possible, use negative pressure to avoid the risk of pressurisation affecting the gas reading.
4. The choice of sampling lines should be appropriate to the application.
3.2.4 Installation in a duct
European Duct Mounting Kit – Metric Threads
Caution: Take note of the requirements on earthing given in Chapter 4. Earth loops should be
avoided.
Gassing
Points
Searchpoint
Optima
Duct
Mounting
Plate
Junction
Box
Bracket
Junction
Box
Note:Inordertomakeuseofthegassing
points provided, the Searchpoint Optima Plus
unitmustbefactoryttedwiththeRemote
GassingCell(2108B0240).