Sampling System Using Remote Gassing Cell (Rgc); Installation In A Duct - Honeywell Searchpoint Optima Plus Operating Instructions Manual

MAN0905_Issue 7_07/17
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.
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 fitted. 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 flow rate should be 0.3 litres per minute.
2. A flow 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.
Junction
Box
Junction
Box
Bracket
Duct
Mounting
Plate
6mm o/d
Gassing
Points
Note: In order to make use of the gassing
Searchpoint
points provided, the Searchpoint Optima Plus
Optima
unit must be factory fitted with the Remote
Gassing Cell (2108B0240).
21
Searchpoint Optima Plus with optional HART output
®
Operating Instructions
2108M0550