▎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).
▎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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