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Fixed Combustible Gas (EX) Detector Fixed Combustible Gas (EX) Detector Fixed Combustible Gas (EX) Detector Fixed Combustible Gas (EX) Detector Fixed Combustible Gas (EX) Detector

Fixed Combustible Gas (EX) Detector

$526.67
| 3 review(s) | Add your review
Industrial fixed combustible gas detectors can monitor gas leaks from 0 to 100% LEL with an accuracy of 1% LEL, often installed in areas where flammable and explosive gases are stored, such as confined spaces, natural gas pipeline areas, and chemical industries.
Free shipping
Delivery date: 6-12 days
SKU: GD300-EX
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Gas Monitor for Flammable Gas Detection

GasDog fixed combustible gas detector is used for fixed detection of flammable gas leaks and issues audible and visual alarms.

Basic Parameters:
  • Model: GD300-EX
  • Detection Principle: Catalytic Combustion
  • Gas: Combustible Gas (EX)
  • Range: 0 to 100% LEL
  • Resolution: 1% LEL
  • Accuracy: ≤±3% F.S.
  • Explosion-proof Grade: II 2G Ex ia IIC T4 Ga
  • Certification: CE, ATEX
  • Warranty: 12 months

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Combustible Gas Detector

Features

Industrial grade explosion proof certification for fixed gas detector

Explosion Proof Certification

Available in ATEX Industrial Explosion-proof Certification

Sound and light alarm

Sound & Light Alarm

Set the Alarm Point According to Your Needs

Anti-magnetic interference

Anti-Magnetic Interference

Can Resist Strong Magnetic Interference of 15V/m

Die-cast aluminum material

Die-cast Aluminum Material

Sturdy and Durable, Anti-Rust and Anti-Corrosion

 

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Why Choose

Our Gas Detector?

Fixed gas detector with infrared remote control

Fixed Explosive Gas Detector

- Industrial Gas Leak Detector

  • ✔️ Built-in high precision sensor for accurate gas leak detection.
  • ✔️ Explosion-proof design, two-stage alarm with sound and light, and the alarm point is settable.
  • ✔️ Optional 3-wire system 4-20mA analog output, relay output or RS485 output.
  • ✔️ 24-hour real-time online monitoring of gas concentration.
  • ✔️ Compatible with various controlled alarm, PLC, DCS and other control systems.
  • ✔️ The infrared controller can remotely control the alarm point setting, zero calibration and address modification.
  • ✔️ GasDog fixed gas detector has a self-calibration function and uses three standard buttons for on-site maintenance.
  • ✔️ One or two on/off signals can be output to drive a fan, solenoid valve or other external equipment.

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More Info.

Applications

Fixed single gas detector for gas pipeline

Gas Pipeline

Fixed gas detector for hospital sterilization room

Hospital Sterilization Room

Fixed gas detector for industrial manufacture

Industrial Manufacture

Fixed gas detector for petrol station

Petrol Station

Gas Detection Q&A - For Your Safety Environments

Built-in advanced gas detector sensor and sound & light alarm to ensure precise and safe gas detection in hazardous applications.

Q: What is a Combustible Gas (EX) Detector?

A: A combustible gas detector, often labeled as an EX detector, is a safety device designed to monitor the concentration of flammable gases such as Methane, Propane, Hydrogen, or other Hydrocarbons in the air. Its main purpose is to provide early warnings of potential fire or explosion hazards by triggering alarms when gas levels approach dangerous thresholds.

Model GD300-EX
Detection Principle Catalytic Combustion
Gas Combustible Gas (EX)
Range (Optional) 0 to 100% LEL
Resolution 1% LEL
Calibration Kit Gas pressure regulator (calibration gas cylinder NOT included)
Accuracy ≤±3% F.S.
Response Time ≤10s
Repeatability ≤±1%
Recovery Time ≤10s
Linearity Error ≤±1%
Zero Shift ≤±1% (F.S./year)
Signal Output (Optional) 4-20mA and RS485
Relay output: one group of relay output (1NO+1NC, 24V 100mA) for one alarm (default), or two groups of relay output (2NO+2NC, 24V 100mA) for high/low alarm (optional).
Alarms Sound, light
Display High light nixie tube display
Installation Wall-mounted, piping type, flow-type (according to the detected environment)
Connection Power connection type: G1/2 male thread explosion-proof flexible pipe
Pipe-mounted type: M45*P2.0
Operating Time 24h
Explosion-proof Grade II 2G Ex ia IIC T4 Ga
Protection Grade IP65
Certification CE, ATEX (Standard: EN IEC 60079-0:2018, EN 60079-1:2014)
Working Voltage 12-36V DC
Case Material Die-casting aluminum housing
Operating Temperature -20℃~50℃
Operating Humidity 0~95%RH (non-condensing)
Dimension 206*179*90mm
Weight ≤1.6kg
Power Adapter Input 100-240VAC 50/60Hz, Output 24VDC 1A (Optional USA plug, Europe plug, AU plug or UK plug)
Accessories (Optional) Calibration kit - gas pressure regulator (calibration gas cylinder NOT included)
  • Body Material: Brass
  • Max. Input Pressure: ≤15MPa
  • Max. Output Pressure: 0.25MPa
  • Flowmeter Range: 0.1-1.5 L/min
  • Mounting Connection: Inlet port: W21.8-14; Outlet port: Ф6 flexible tube


Note: To measure confined spaces such as pipelines, please contact us and inform the detailed conditions of use.

Dimension (Unit: mm)

Fixed gas detector dimension

WRITE YOUR OWN REVIEW
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EXISTING REVIEWS
Precise and convenient
Actual testing showed that the detection accuracy remained stable within ±3% F.S. During routine inspections, comparisons with a portable device yielded almost identical values, with no data drift observed. The signal transmission distance is long, covering the entire perimeter of our factory's pipe corridors without the need for additional signal amplifiers, and data is transmitted back to the central control room in real time.
Kiko | 7/31/2026 7:55 AM
Was this review helpful? Yes No (0/0)
High cost-performance ratio
I think the cost-performance ratio is good, especially for places like factories and warehouses that require long-term monitoring. The safety aspects make the investment worthwhile. Overall, it's a gas detector that inspires confidence.
Reina | 5/8/2026 3:50 AM
Was this review helpful? Yes No (0/0)
Secure Installation
This fixed combustible gas detector offers virtually worry-free installation once installed on-site. Its impact-resistant metal casing ensures long-term use. Its industrial-style appearance and practical functionality are also impressive.
Skoog | 9/19/2025 2:43 AM
Was this review helpful? Yes No (0/0)
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