Intrinsically Safe Gas Detectors FGD3 Series

Flammable Gas Detector

Using 'Pellistor' Technology

Intrinsically Safe Flammable Gas Detector

Features

  • Sensors available for the detection of Hydrocarbon gases or Fuels.
  • Detects a wide range of Hydrocarbon gases and Hydrogen.
  • Sensors available for either 0-100% LEL or 0-100% volume gas.
  • Suitable for use in Zones 1 and 2 hazardous areas.
  • Three wire connection.
  • 8 to 24 volt dc operation (also requires an additional supply of 4 to 7 volts dc to power the sensor).
  • Industry standard 4 to 20mA output.
  • Digital display.
  • Single operator calibration.
  • Optional weather guard available.

Description

The FGD 3 Flammable Gas Detector uses 'pellistor' technology to detect a wide range of hydrocarbons, fuel gases and hydrogen. The sensor can be set to detect either methane or general hydrocarbons. Pellistor sensors can be fitted to detect hydrocarbons over the range 0 to 100% Lower Explosive Limit (LEL) or 0 to 100% Volume gas. The detectors use the industry standard 4-20mA current loop to convey the gas levels detected to a control unit. This means that under zero gas conditions 4mA is drawn from the supply, and under full scale gas conditions 20mA is drawn from the supply. The current varies linearly for gas levels between zero and full scale. The detector heads use a three-wire connection. While the loop current supplies the power required by the detector head electronics within the detector head, a second supply must be provided to power the pellistor sensor.

Weather Guard

FGD3 Weatherguard

An optional weather guard is available for installations exposed to the atmosphere or contaminants and is also suitable for use in other areas where hosing down takes place. The weather guard reduces the possibility of water or other contaminants entering into the gas sensor thereby improving the overall reliability of the gas detector in harsh environments.The weather guard is attached with tamperproof screws to ensure that it is not inadvertently removed.

Collector Cone

A collector cone is available which can be fitted around the sensor inlet in order to concentrate any gas present around the sensor and hence improve the detection ability. Mounting brackets are also available.

Mounting Kits

A Swivel Mounting Bracket and Ceiling Mounting Kit is available for use with this range of gas detectors. In addition, a duct mounting kit is also available. Please contact Status Scientific Controls to discuss your particular application.

Data Sheet

Hazardous Area Certification Data

Certificate Number - BAS 01ATEX2300
II 2 G Ex ia IIC T4 Gb (-20 deg. C <Ta< +60 deg. C)
Download Certificate

Download Chinese Certification

FGD3 'Pellistor' Flammable Gas Detectors - Order Codes

Stock No. Description
SS415 FGD3 Flammable Gas Detector 0-100% Volume Gas
SS416 FGD3 Flammable Gas Detector 0-100% LEL Gas
SS417 FGD3 Flammable Gas Detector for Fuel Gases
SS429 FGD3 Series Collector Cone
SS374 FGD3 Series Swivel Mounting Bracket
SS375 FGD3 Series Ceiling mounting Bracket
SS475 FGD3 Series Protective Weather Guard

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sales@status-scientific.com • International - +44 (0) 1623 651381