Sensor Head; Installation - Prosense PQ Series Installation And User Manual

The entry specifications related to detector body are given in table-1 below:

Sensor Head

The Prosense sensor head designed to detect flammable, toxic and oxygen gases. Sensor
head may include Infrared, pellistor and a wide range of toxic gas sensors based on
electrochemical cell (ECC) technology.
ATEX certified Sensor Head must be used in hazardous atmosphere.

Installation

Gas detectors should be mounted where a potential hazard of gas is most likely to be
present. The following points should be noted when locating gas sensors.
• When locating detectors consider the possible damage caused by natural events e.g.
rain or flooding.
• Consider ease of access to the gas detector for functional testing and servicing.
• Consider how escaping gas may behave due to natural or forced air currents.
Note: The placement of gas detectors should be determined following the advice of experts
having specialist knowledge of gas dispersion, experts having knowledge of the process plant
system and equipment involved safety and engineering personnel. The agreement reached
on the location of detectors should be recorded.
PRS-UM-PQ-EN-Rev.05-18.06.2020
Type Entry 1
TYPE 1 1/2" NPT 1/2" NPT
TYPE 2 3/4" NPT 3/4" NPT
TYPE 3 M20
Table 1: Detector body types and entry specifications
Diagram 5: Sensor Head components
Entry 2 Entry 3
1/2" NPT 3/4" NPT
3/4" NPT 3/4" NPT
M20 M20
Entry 4
3/4" NPT
12