Crowcon Flamgard Plus Gas Detector

Crowcon Flamgard Plus Gas Detectors

Crowcon Flamgard Plus Gas Detector – call T&D Sales for price, delivery and stock.

Fixed Gas Detectors

Crowcon Flamgard Plus

Single Gas & Multi-gas Detectors | Fixed Point Gas Detection & Portable Gas Safety Applications | Industrial Locations & Hazardous Area Zones

Crowcon Flamgard Plus | ATEX Zone 1 & Zone 2

Flamgard Plus, manufactued by Crowcon, is a fixed gas detector which is ATEX certified for gas detection in Zone 1 and Zone 2 hazardous areas.

The Crowcon Flamgard Plus is a flameproof (Ex d) gas detector that uses poison-resistant pellistors to detect explosive levels of hydrocarbons, hydrogen and other flammable gases and vapours, including aviation fuel and leaded petrol vapours.

Crowcon Flamgard Plus has a wide selection of sensors including a number of catalytic beads for a wide selection of flammable gases and vapours as well as electrochemical sensors for toxic gases and oxygen.

The Crowcon Flamgard Plus gas detector is easy to calibrate, maintenance and operation are simple and the long life sensors keep disruption to site to a minimum.

Crowcon Flamgard Plus has an ingress protection to IP65 as a standard.

Crowcon Flamgard Plus

Key Features

Should you require any further technical support and specification advice about the Flamgard Plus manufactured by Crowcon please do not hesitate to contact us.

  • Robust Construction – Crowcon Flamgard Plus is constructed using marine grade aluminium with a stainless steel sensor housing
  • Flexible Options – The Flamgard Plus is available in 2 or 3 wire formats with a 40-20mA current sink or source. Relays for alarm and fault are also options
  • Low Ownership Costs – Sensors are long life with simple part replacement making the gas detector easy to operate and maintain
  • Calibration – The Flamgard Plus can be calibrated with ease and boasts local display and buttons so the junction box doesn’t need to be opened. Non-intrusive one man calibration can be performed locally without the need for hot work permits
  • Range of Sensors – This gas detector can be tailored to meet the user’s needs with a choice of catalytic beads for a wide selection of flammable gases and vapours and an extensive range of electrochemical sensors for toxic gases and oxygen
Crowcon Flamgard Plus Gas Detector

Crowcon Flamgard Plus Gas Detector – flameproof (Ex d) pellistor based detector with display & 4-20mA output, for hydrocarbons, hydrogen & petrol vapours

Crowcon Flamgard Plus

Bump Testing And Calibration

Crowcon Flamgard Plus

Routine bump testing is recommended for the range of Crowcon fixed gas detectors prior to each use. Bump testing is a brief application of a gas to the sensor to invoke a prescribed reaction, ensuring the gas detector reacts as expected.

Bump testing provides a quick, easy and direct method of verifying gas detectors are performing as required and takes a lot less time than ‘zeroing’ the device.

The bump test is widely accepted as a suitable method of testing gas detection equipment.

Crowcon Flamgard Plus with display & 4-20mA output for detection hydrocarbons, hydrogen & petrol vapours.

Crowcon Flamgard Plus Fixed Gas Detector

Product Specifications

The Crowcon Flamgard gas detector with fixed point location provides reliable monitoring of an extensive range of gases.

Size 200 x 115 x 115mm (7.9 x 6.1 x 6.1ins)
Weight 2.2kg (4.9lbs)
Enclosure material Junction box: Marine grade alloy Sensor housing: 316 stainless steel
Ingress Protection IP65
Cable entries 2 x M20 or 1/2” NPT
Power 10-30Vdc, 210mA max (relay version) 160mA max (non relay)
Operating temperatures -10o C to +55o C (14o F to 131o F)
Humidity 0-99% RH non-condensing
Relays (optional) SPNO or SPNC contacts rated 30Vdc 1A (non-inductive load) for Alarm 1, Alarm 2, Fault
Display 3-digit LCD back-lit display, LED status indicator
Calibration method Via magnetically operated buttons
Electrical output 3 wire 4-20mA, sink or source
Terminals Suitable for up to 1.5mm2 cable
Sensor type Catalytic bead
Repeatability +/- 2% FSD typically
Zero drift +/-2% FSD, 6 months typically
Response time T90 <15 seconds typically
Hazardous area zones Zone 1 or 2
Approvals Ex II 2 G Exd IIC T6 Gb UL Class I Zone 1
EMC compliance EN50270, FCC, ICES-003

Hazardous Areas

Crowcon Flamgard Plus – Fixed Gas Detector Gases And Ranges Detected

The Crowcon Flamgard gas detector provides detection and level monitoring of several harmful and toxic industrial gas types.

Gas Type LEL (% vol) Crowcon Flamgard Plus Range Available
Acetylene (C2H2)* 2.3 0-100% LEL
Ammonia (NH3) 15 0-100% LEL
Butane (C4H10) 1.4 0-100% LEL
Ethanol (C2H5OH) 3.1 0-100% LEL
Ethane (C2H6) 2.4 0-100% LEL
Ethylene (C2H4) 2.3 0-100% LEL
Hexane (C6H14) 1.0 0-100% LEL
Hydrogen (H2) 4 0-100% LEL
LPG 2 0-100% LEL
Methane (CH4) 4.4 0-100% LEL
Methanol (CH3OH) 6 0-100% LEL
Pentane (C5H12) 1.1 0-100% LEL
Petrol vapor 1.3 0-100% LEL
Propane (C3H8) 1.7 0-100% LEL
Propanol (C3H8O) 2.1 0-100% LEL

*Acetylene option not available on UL certified version

Crowcon Flamgard Plus – Hazardous Area ATEX Certified Gas Detector

Hazardous Area Classification

Ex II 2 G Exd IIC T6 Gb
UL Class I Zone 1

Suitable for Zone 1 and Zone 2.

Visit hazardous area gas detectors for explosion and flameproof gas monitoring and detection instruments with certification for potentially explosive atmospheres, including Zone 1 and Zone 2 (according to ATEX and IECEx) and Class/Division categories (according to North American standards).

T&D provide competitive prices and delivery for all Crowcon Gas Detectors, including the Crowcon Flamgard Plus.

Did you know? Crowcon fixed gas detectors protect plant; portable gas detectors protect people.


T&D Sales Team are Certificated by Crowcon to support the specification and supply of their flammable and toxic gas detectors. Additionally, T&D are CompEx Certificated and competent in understanding hazardous area classifications and site requirements for the sale of explosion and flameproof equipment.

Data Sheets