Hydrogen (H2) Gas Sensor, 0-1000/2000/5000ppm

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$129.78

Hydrogen (H₂) gas sensor detects 0-1000/2000/5000 ppm using an electrochemical three-electrode system. It offers 7.5 ±2.5 nA/ppm sensitivity, 10 ppm resolution, and T90 <100s response time. Operating at 0 mV bias voltage, The H₂ gas sensor supports 5-30Ω load resistance and works in -30°C to 50°C, 15%-90% RH (non-condensing). Used in environmental quality testing, industrial robots, chemical plants, coal mines, instrumentation.

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SKU: ATO-GS-H2

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Delivery date: 6-12 days

Overview

The H2 gas sensor detects 0-1000/2000/5000 ppm using an electrochemical system. It has 7.5 ±2.5 nA/ppm sensitivity, 10 ppm resolution, and T90 <100s response time. Works in -30°C to 50°C, 15%-90% RH. Ideal for industrial and environmental monitoring.

Specification

Model	ATO-S4H2
Detection Principle	Electrochemical Three-Electrode
Detected Gas	H2 (Hydrogen)
Detection Range	0-1000/2000/5000ppm
Sensitivity	7.5 ±2.5 nA/ppm
Zero Drift	±1 ppm
Resolution	1ppm (0-1000/2000ppm), 10ppm (0-5000ppm)
Response Time	T₉₀<100s
Bias Voltage	0 mV
Load Resistance	5-30Ω
Temperature Range	-30°C to 50°C
Humidity Range	15%RH to 90%RH (Non-condensing)
Repeatability	±2% Output Signal
Long-term Stability	<2% Signal/Month
Linearity	Linear
Operating Pressure	90 to 110 kPa
Warranty	12 months after delivery
Service Life	2 years

Dimension (Unit: mm)

Electrochemical gas sensors size

Crossover Interference

The chlorine dioxide (ClO2) gas sensor also responds to gases other than the target gas. For reference, the response characteristics of the sensor to several common interfering gases are listed in the table below. The data in the table are typical responses of interfering gases at a given concentration.

Interfering Gas	Gas Concentration (PPM)	Displayed Value (PPM/H₂)
CO	50	150
SO₂	20	0
H₂S	100	0
Cl₂	10	0.5
NO	50	10
NO₂	30	1

Basic Test Circuit

Gas sensor basic test circuit

Application

Hydrogen (H₂) gas sensor can be used in environmental quality testing, industrial robots, chemical plants, coal mines, instrumentation, underground pipelines, fruit and vegetable gardens, greenhouses and so on.

Electrochemical gas sensor applications

Tips: Why is it important to detect hydrogen gas?

Hydrogen (H₂) is colorless, odorless, highly flammable, and explosive when mixed with air at concentrations between 4% and 75% (40,000 to 750,000 ppm). Since it is difficult to detect without specialized equipment, hydrogen leaks pose a significant fire and explosion hazard in industrial settings.

The H₂ gas sensor provides real-time monitoring, helping to prevent leaks, ensure workplace safety, and comply with industry regulations. It is widely used in fuel cells, chemical plants, battery storage systems, and hydrogen refueling stations to reduce risks associated with hydrogen gas accumulation.

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