The PDM400 Online Hydrogen Analyzer adopts a palladium alloy thin-film hydrogen sensor, capable of detecting hydrogen concentrations in various environments. It enables remote transmission and control via (4~20)mA analog signals, RS-485 communication signals, or switch-type alarm signals, while displaying measurement results in real time. The instrument supports in-line pipeline installation and is suitable for industrial-grade online hydrogen monitoring in applications such as water electrolysis for hydrogen production, hydrogen-natural gas blending, ammonia cracking for hydrogen generation, methanol reforming for hydrogen production, fuel cell system test benches, and energy storage power stations.This analyzer complies with GB/T 3836.1-2021 'Explosive Atmospheres - Part 1: General Requirements for Equipment' and GB/T 3836.2-2021 'Explosive Atmospheres - Part 2: Equipment Protection by Flameproof Enclosure 'd'', with an explosion-proof marking of Ex db IIC T5 Gb. It is applicable in explosive gas atmospheres of Groups IIA, IIB, and IIC, within temperature classes T1 to T5, in Zone 1 and Zone 2 hazardous areas where explosive mixtures of flammable gases/vapors and air may exist. All technical documentation, drawings, and prototypes of the analyzer have been reviewed, tested, and certified by the National Quality Supervision and Inspection Center for Explosion-Protected Electrical Products (CQST).

▎Key Features ：

1.Wide detection range: Capable of detecting hydrogen leaks at concentrations of (0~100)% Vol.

2.High-humidity hydrogen detection: Suitable for 100% RH high-humidity hydrogen detection environments, requiring no drying pretreatment.

3.Hydrogen detection in complex background gases: Suitable for hydrogen detection environments with complex background gases, featuring excellent anti-interference performance.

4.High reliability: Utilizes non-consumptive sensors with a service life of up to 10 years and excellent long-term stability.

5.Local display function for easy installation: Employs an OLED display with self-illumination and high brightness; supports direct plug-in installation into pipelines for pressure-resistant detection.

▎Technical Specifications ：

Parameter Name	Parameter Value
Target Gas	Hydrogen (H₂)
Range	(0~4) %Vol、 (0~10) %Vol (customizable range)
Measurement Error	±5%F.S
Display Resolution	0.01%Vol
Response Time (T₉₀)	<60s
Sampling Method	In-line
Sample Gas Pressure	≤1MPa
Ambient Temperature	(-20~+70) ℃
Ambient Humidity	(0~100) %RH (non-condensing)
Cross Interference	No interference from: 3%HC、1000ppmCO、3%CO₂、alcohol、100ppmH₂S
Remote Control	Infrared remote adjustment (allows operation without opening the enclosure)

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▎Product Introduction ：

The PDM400 Online Hydrogen Analyzer adopts a palladium alloy thin-film hydrogen sensor, capable of detecting hydrogen concentrations in various environments. It enables remote transmission and control via (4~20)mA analog signals, RS-485 communication signals, or switch-type alarm signals, while displaying measurement results in real time. The instrument supports in-line pipeline installation and is suitable for industrial-grade online hydrogen monitoring in applications such as water electrolysis for hydrogen production, hydrogen-natural gas blending, ammonia cracking for hydrogen generation, methanol reforming for hydrogen production, fuel cell system test benches, and energy storage power stations.This analyzer complies with GB/T 3836.1-2021 'Explosive Atmospheres - Part 1: General Requirements for Equipment' and GB/T 3836.2-2021 'Explosive Atmospheres - Part 2: Equipment Protection by Flameproof Enclosure 'd'', with an explosion-proof marking of Ex db IIC T5 Gb. It is applicable in explosive gas atmospheres of Groups IIA, IIB, and IIC, within temperature classes T1 to T5, in Zone 1 and Zone 2 hazardous areas where explosive mixtures of flammable gases/vapors and air may exist. All technical documentation, drawings, and prototypes of the analyzer have been reviewed, tested, and certified by the National Quality Supervision and Inspection Center for Explosion-Protected Electrical Products (CQST).