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Portable Hydrogen (H2) Gas Detector Portable Hydrogen (H2) Gas Detector Portable Hydrogen (H2) Gas Detector Portable Hydrogen (H2) Gas Detector Portable Hydrogen (H2) Gas Detector Portable Hydrogen (H2) Gas Detector Portable Hydrogen (H2) Gas Detector

Portable Hydrogen (H2) Gas Detector

$783.99
| 3 review(s) | Add your review
The provided portable Hydrogen H2 gas detector has a real-time LCD display, sound & light vibration alarm, pump type detector, detecting range from 0 to 10ppm, 1000ppm, 20000ppm to 4% VOL, handheld and small design, easy to carry and use.
Free shipping
Delivery date: 3-10 days
SKU: GD200-H2
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Gas Detector for H2 Monitoring

GasDog handheld Hydrogen H2 gas detector provides a real-time LCD display, advanced gas sensor and sensitive alarms to monitor hydrogen H2 concentration changes.

Basic Parameters:
  • Model: GD200-H2
  • Sampling Method: Pump Type
  • Gas: Hydrogen (H2)
  • Range: 0 to 10ppm~40000ppm, 0 to 4% VOL
  • Resolution: 0.001ppm, 0.01ppm, 0.1ppm, 1ppm or 0.001%
  • Accuracy: ≤±3% F.S.
  • Explosion-proof Grade: Ⅱ 2G Ex ia Ⅱ CT4 Ga
  • Certification: CE, ATEX
  • Warranty: 12 months

01

Hydrogen Detector

Features

Aluminium alloy carrying case

Aluminium Alloy Case

Equipped with a Waterproof Aluminum Alloy Suitcase

Zero calibration

Zero Calibration

Self-Calibration and Zero Calibration for Accurate Detection

USB data transfer

USB Data Transfer

USB Interface to Transfer Data and Charge at High Speed

Rechargeable lithium battery

Rechargeable Battery

3.7V Rechargeable Lithium Polymer Battery with a Large Capacity

 

02

Why Choose

Our Gas Detector?

Details of portable NH3 gas detector

Portable Single Gas Detector

- Handheld Hydrogen Gas Leak Detector

 
  • ✔️ Built-in internal sampling pump, 10 grades of suction are available.
  • ✔️ Two-stage alarm with sound & light, and alarm point is settable.
  • ✔️ GasDog Hydrogen (H2) detector adopts a high-accuracy gas sensor with a fast response.
  • ✔️ LCD directly reads out the Hydrogen gas, unit, concentration, local time, etc.
  • ✔️ Gas concentration units mg/m3 and ppm can be shifted by one press.
  • ✔️ Handheld and small design, easy to carry, can be put in a pocket.
  • ✔️ High-intensity ABS engineering plastics housing, suitable for different kinds of situations.

03

More Info.

Applications

H2 gas detector for hydrogen fueling stations

Hydrogen Fueling Stations

Monitors high-pressure hydrogen storage, piping, and dispensing valves for micro-leaks (＜1ppm) to prevent flammable build-ups.

H2 gas detector for battery charging rooms

Battery Charging Rooms

Detects dangerous H2​ off-gassing accumulated during large-scale lead-acid battery charging operations in warehouses and power plants.

Portable gas detector for labs and semiconductors

Labs & Semiconductors

Ensures trace-level safety and high-accuracy detection for gas chromatography, fabrication processes, and research facilities.

Portable gas detector for petrochemical and refining

Petrochemical & Refining

Provides robust ATEX-certified safety monitoring for petroleum refining, hydrotreating, and chemical processing zones.

04

Gas Detector

Compliance & Calibration

Certification and Compliance Standards

  • Intrinsically Safe Explosion-Proof Certification: Gas Dog portable Hydrogen gas detector holds a high-level intrinsically safe explosion-proof certificate (II 2G Ex ia II CT4 Ga), permitting its safe use and wear in environments containing hazardous explosive gases.
  • Compliance Standards: It supports OSHA monitoring requirements regarding STELs—allowing for the configuration of corresponding alarm thresholds—thereby facilitating occupational health and safety compliance in the workplace. This H2 detector has obtained both European CE certification and ATEX intrinsically safe explosion-proof certification, making it suitable for use in explosive environments.

How to calibrate the GasDog Hydrogen H2 gas detector?

This H2 gas detector has a 1 year (365 days) warranty. Usually, the gas detector needs to be calibrated once a year or every 6 months. It can be calibrated at any local calibration institution, or you can send it to us for calibration. The calibration fee is $ 75 for one time. So it is recommended to purchase a copper kit and a stainless calibration kit.

 

Gas Detection FAQs - 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 the measuring range of the GasDog H2 detector, and how does %VOL relate to %LEL?

A: GasDog H2 detector supports flexible configurations from trace leaks (0-10 ppm with 0.001 ppm resolution) up to high-concentration safety monitoring (0-4% VOL). Since the Lower Explosive Limit (LEL) of Hydrogen is exactly 4% by volume in air, a range of 0-4% VOL is equivalent to 0-100% LEL, providing complete coverage for explosion prevention.

Q: Is this handheld Hydrogen detector certified for classified hazardous areas?

A: Yes. GasDog GD200 portable gas detectors feature an intrinsically safe design with a Ⅱ 2G Ex ia Ⅱ CT4 Ga explosion-proof classification. It strictly complies with ATEX and CE safety standards, making it legally compliant and safe for use in industrial Zone 1 and Zone 2 hazardous areas.

Q: What type of H2 sensor does it use, and what is its response time?

A: Depending on your required range (ppm vs. %VOL), this Hydrogen gas detector utilizes a high-precision electrochemical sensor. Powered by an internal motorized sampling pump, it delivers an ultra-fast response time (T90​<15s), ensuring workers receive immediate alerts before gas concentrations reach hazardous levels.

Model GD200-H2
Sampling Method Pump type, flow rate can be up to 750ml/min
Detection Principle Electrochemistry
Range (Optional)* 0 to 10 ppm, 0 to 20ppm, 0 to 100ppm, 0 to 500ppm, 0 to 1000ppm, 0 to 2000ppm, 0 to 5000ppm, 0 to 10000ppm, 0 to 20000ppm, 0 to 40000ppm, 0 to 4% VOL
Resolution 0.001ppm (0-10/20ppm), 0.01ppm (0-100ppm), 0.1ppm (0-500ppm), 1ppm (0-1000/2000/5000/10000/20000/40000ppm) or 0.001% VOL (0-4% VOL)
Accuracy ≤±3% F.S.
Response Time ≤10s
Repeatability ≤±1%
Recovery Time ≤10s
Linearity Error ≤±1%
Zero Shift ≤±1% (F.S./year)
Data Logging (Optional Function) High speed data transmission by USB, available for data downloading and printing (The built-in IC card has about 2G memory, which can record 100,000 sets of data.)
Alarms Sound, light and vibration
Display LCD dot matrix display
Language Chinese/English
Battery 3.7V rechargeable lithium battery, 3.7 Watt (Charger included: Input AC 100-240V 50/60Hz with optional USA, Europe or UK plug)
Operating Time 100h (Pump off)
Explosion-proof Grade Ⅱ 2G Ex ia Ⅱ CT4 Ga
Case Material ABS+PC
Protection Grade IP66
Certification CE, ATEX (Standard: EN IEC 60079-0:2018, EN 60079-1:2014)
Operating Temperature -20℃~50℃
Operating Humidity 0~95%RH (non-condensing)
Operating Pressure 0.8~1.2bar
Dimension 205*75*32mm
Weight 300g
Warranty 12 months
Extension Probe About 480mm (Total Length), About 300mm (Probe Head)
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:

  • If you need an H2 gas detector with other measuring ranges unlisted in the above table, please contact us to inform your operating environment, so as to help you choose an appropriate one for your application.
  • We also provide other common gas detectors, and you can refer to GasDog Gas Detector Catalog to get the specific gas type and measurement range. If you have any questions, please feel free to contact us.
WRITE YOUR OWN REVIEW
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EXISTING REVIEWS
Lightweight gas detector
Compact, lightweight and super easy to carry around for daily site checks. It powers up quickly, gives stable and accurate H₂ readings within seconds, and triggers clear alerts right away when the concentration goes over the limit.
Hackley | 6/5/2026 6:26 AM
Was this review helpful? Yes No (0/0)
Convenient hydrogen gas detector
This portable hydrogen gas detector is practical, convenient, and reliable. It doesn't require much setup; you can just pick it up and get to work. Its small size makes it easy to carry, and it's ready to use right out of the box with a fast response time.
Conlos | 12/12/2025 2:22 AM
Was this review helpful? Yes No (0/0)
Great handheld Hydrogen detector
Awesome Hydrogen gas detector! I purchased it because I need to detect Hydrogen leaks at my job and this monitor perfectly meets my needs. It's so lightweight that I can take it with me wherever I work. Simple operation, clear screen display, and I can easily read the H2 concentration data.
Rose | 10/10/2023 7:23 AM
Was this review helpful? Yes No (0/0)
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