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FGD5/6-IR Pellistor Replacement Gas Detectors

Updated:2025-03-13

Brand: PST/Status Scientific
Model: FGD5/6-IR
Description: Flameproof Fixed Gas Detectors are used in Potentially Explosive Atmospheres where, due to the nature of the environment or the industrial process taking place, there is the risk of an incendive spark
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Product Details

FGD5/6-IR Pellistor Replacement Gas Detectors Description：

Datasheet

Detection of Methane and Other Hydrocarbon Gases

Features

Certified Ex d IIC to IECEx and ATEX

Temperature compensated infrared sensor for detection of Methane and other Hydrocarbon gases

Tested and approved by major oil companies

Compatible with industry standard control panels

Eliminates all poisoning problems associated with pellistors

Flameproof Fixed Gas Detectors are used in Potentially Explosive Atmospheres where, due to the nature of the environment or the industrial process taking place, there is the risk of an incendive spark from electrical apparatus causing an explosion to occur and the organisation responsible for the safety of the area requires that electrical equipment be enclosed within a flameproof enclosure (also known as an FLP, Ex d or explosion-proof enclosure).

The FGD5/6-IR is for the direct replacement of oil and gas industry 'pellistor' types. It does not utilise mirrors, lenses or separate heaters, eliminates the requirement for routine maintenance and minimises operating costs. An optional Weatherguard protects sensor from rain and salt spray and has the option for remote gas testing.

Specifications

Size	Body 73mm long x 50mm diameter, thread 20mm long Overall body length with weatherguard fitted = 149mm
Material	Sensor Body – Stainless Steel Grade 316 Weatherguard – Stainless Steel Grade 304 & Nylon 66
Mounting thread	M20 X 1.5 or M25 X 1.5 or ?” NPT
Weights	0.67 Kg excluding weatherguard 0.8 Kg including weatherguard
Ex d Gas Inlet Protection Method	Stainless Steel Mesh Grade 316
Gas types	Hydrocarbons (Note – Infrared sensors have no response to Hydrogen)
Operating voltage at detector head	3.2 to 7.5 volts dc
Maximum short term overvoltage	24 volts dc
Recommended operating currents	Type ‘200’ - 160 to 250mA Type ‘300’ – 250 to 350mA
Output signal	15 to 30 mv / % CH4 (Supplied as 20 mV / % CH4 unless otherwise requested)
Measurement range	0 – 100% LEL (5% vol. CH4), or 0 – 100% LEL (4.4% vol. CH4 to EN 61779-1), or 0 – 100% volume CH4
Response time	Typically T90 < 30 sec (CH4)
Measurement resolution	1% LEL or 1% volume (CH4)
IP rating	Enclosure IP66, Sensor IP65
Operating temperature	- 20 to +60 O C
Humidity range	0 to 95% RH non-condensing
Operating pressure	Atmospheric + or - 10%
Performance standard	EN 61779-1:2000, EN61779-4:2000, EN61779-5:2000
Hazardous Area Certification
Certificate Numbers	IECEx KEM06.0022U, Code Ex d IIC KEMA 03ATEX2247 U, Code Ex d IIC
Standards	IEC 60079-0 : 2004 (Edition 4) IEC 60079-1 : 2007-04 (Edition 6) EN 60079-0:2018 EN 60079-1:2014 EN50270:2006
Temperature Codes	Ta -20 to +60 deg C
Zones	1 & 2