Fixed Hydrogen (H2) Gas Detector, 0 to 1000/2000/5000 ppm

SKU: AT-Store
In Stock
EGP 88,000.000 exc. vat
In Stock



Fixed Hydrogen (H2) Gas Detector, 0 to 1000/2000/5000 ppm

Fixed gas detector from reliable manufacturer, applicable gas hydrogen. Detecting range 0-1000/2000/5000/10000 ppm, real time display, sound and light alarm, remote control, output signal 4-20mA or RS485. H2 gas detector for detecting and monitoring hydrogen leak in 24 hours, small size, high reliability, acceptable price.

Fixed Hydrogen (H2) Gas Detector, 0 to 1000/2000/5000 ppm


  • Hydrogen gas detector adopts high precision sensor for accurate gas leak detection.
  • Hydrogen gas detector is equipped with 3-wire system 4-20mA analog output, relay output, RS485 output (optional).
  • The H2 gas detector is compatible with various controlled alarms, PLC, DCS and other control system, and can be remote monitored.
  • Explosion-proof design, fast, relaible and stable.
  • Infrared ray controller can remote control the alarm point settings, zero calibration, and address modification.
  • Two-stage alarm with sound and light, and the alarm point is settable.
  • The hydrogen gas detector has self-calibration function, and three standard keys will be used to realize on-site maintenance.
  • The H2 gas detector can output one or two on-off signals, can drive ventilator, solenoid valve or other external devices.


Model GD300-H2
Detection Principle Electrochemistry
Gas Hydrogen (H2)
Range (Optional) 0-1000 ppm
0-2000 ppm
0-5000 ppm
0-9999 ppm
0-1% VOL
0-4% VOL
Resolution 0.1 ppm, 1 ppm (range 0-9999 ppm ), 10 ppm/0.001% VOL (range 0-1% VOL & 0-4% VOL)
Accuracy ≤±3% F.S.
Responce Time ≤10s
Repeatability ≤±1%
Recovery Time ≤10s
Linearity Error ≤±1%
Zero Shift ≤±1% (F.S./year)
Signal Output (Optional) Note 4-20mA, or RS485 (transfer card included);
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 G1/2 is the inlet and outlet for power and signal lines
Pipe-mounted type: The installation thread size of the instrument is M45*P2.0
Operating Time 24h
Explosion-proof Grade Ex d llC T6
Protection Grade IP65
Certification CE, ATEX
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
Accessories Power adapter: Input 100-240VAC 50/60Hz, Output 24VDC 2A (Optional USA plug & Europe plug)


  • The output signal 4-20mA and RS485 CANNOT be used at the same time.
  • To measure confined spaces such as pipelines, please contact us and inform the detailed conditions of use.

Fixed Hydrogen (H2) Gas Detector Dimension (Unit: mm)

***Other Common Gases and Ranges Available for Fixed Gas Detectors

Gas Range (Default) Range (Optional) Resolution
Combustible Gas (EX) 0-100% LEL 0-100% LEL 1%LEL
Oxygen (O2) 0-30% Vol 0-25% Vol 0.01%Vol
Carbon Monoxide (CO) 0-1000 ppm 0-100/500/1000/2000 ppm 0.01ppm/0.1ppm/1ppm
Hydrogen Sulfide (H2S) 0-100 ppm 0-50/100/500/1000 ppm 0.01ppm/0.1ppm/1ppm
Methane (CH4) 0-100% LEL 0-100% LEL 1%LEL
Chlorine (Cl2) 0-10 ppm 0-10/20/50/100 ppm 0.01ppm/0.1ppm
Hydrogen Chloride (HCL) 0-20 ppm 0-10/20/50/100 ppm 0.01ppm
Hydrogen (H2) 0-1000 ppm 0-1000/2000/5000/10000 ppm 0.1ppm/1ppm
Nitric Oxide (NO) 0-100 ppm 0-100/250/500/1000 ppm 0.01ppm/0.1ppm/1ppm
Nitrogen Dioxide (NO2) 0-20 ppm 0-20/50/100 ppm 0.01ppm/0.1ppm/1ppm
Formaldehyde (CH2O) 0-10 ppm 0-10/20/-50/100 ppm 0.01ppm/0.1ppm/1ppm
Ozone (O3) 0-10 ppm 0-1/5/10/20/50/100 ppm 0.001ppm/0.01ppm/0.1ppm
Carbon Dioxide (CO2) 0-2000 ppm 0-1000/2000/5000/10000/50000 ppm 0.1ppm/1ppm
Sulfur Dioxide (SO2) 0-20 ppm 0-10/20/100 ppm 0.01ppm/0.1ppm
Ethylene Oxide (ETO) 0-100 ppm 0-20/50/100/500/1000 ppm 0.01ppm/0.1ppm/1ppm
Phosphine (PH3) 0-10 ppm 0-10/20/50/100/200/500/1000 ppm 0.01ppm/0.1ppm/1ppm
Nitrogen (N2) 0-100% Vol 0-100% Vol 0.01%Vol
Hydrogen Fluoride (HF) 0-10 ppm 0-50 ppm 0.01ppm

Note: Some common gases and the measuring ranges are listed in the above table. For more information, please feel free to contact us.


Tips: The necessity of a hydrogen gas detector.

Hydrogen (H2) has the physical properties of colorless and odorless, and the flame is transparent when burned. Therefore, the presence of hydrogen in the environment is not easy to detect by the senses. Generally, Ethyl mercaptan is added to the hydrogen gas so that it can be detected by the senses and make the flame appear color. However, when judging whether hydrogen has leaked, we cannot judge by ignition. Because using an open flame to check hydrogen is tantamount to igniting a time bomb, which is very dangerous. Therefore, it is necessary to use a hydrogen gas detector to monitor the environment where H2 may leak on-line.

Hydrogen is mainly stored in liquid form. The liquid H2 overflows and evaporates suddenly in a large area, which can also cause hypoxia in the environment, and may form an explosive mixture with the air, causing a combustion and explosion accident.

ATO hydrogen gas detector is an instrument that can continuously detect the concentration of H2 in the environment. It uses the natural diffusion method to detect the H2 concentration, with an electrochemical sensor. The use of hydrogen detectors can reduce the occurrence of H2 explosion accidents.





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