Configurable hydrogen measuring ranges
The published standard ranges are 0–4% Vol and 0–10% Vol, with customizable range options. The source also mentions detection up to 0–100% Vol; confirm the required configuration before ordering.
Product ImagePDM400 Online Hydrogen Analyzer
ONLINE HYDROGEN ANALYZER
PDM400 Online Hydrogen Analyzer
Palladium-alloy thin-film sensor•High-humidity hydrogen monitoring•In-line installation•4–20 mA / RS-485 / alarm outputs
Measurement range(0–4)% Vol or (0–10)% Vol; customizable
Measurement error±5% F.S
Display resolution0.01% Vol
Response time (T90)<60 s
Installation / pressureIn-line; sample gas ≤1 MPa
ProtectionEx db IIC T5 Gb; enclosure IP66
HOW THE PRODUCT WORKS
In-line hydrogen analysis for high-humidity and complex gas applications
Continuous hydrogen monitoring for demanding process environments
The PDM400 Online Hydrogen Analyzer is an in-line instrument for measuring hydrogen concentration in industrial gas processes. Its palladium-alloy thin-film hydrogen sensor is designed for hydrogen monitoring across varied gas environments, including applications with high humidity or complex background gases.
In-line measurement with remote signals and local display
The analyzer supports pipeline installation and displays measurement results locally on a high-brightness OLED screen. It can transmit measurement data and support system integration through 4–20 mA analog output, RS-485 communication, and switch-type alarm signals. Infrared remote adjustment allows operation without opening the enclosure.
Designed for humid and mixed-gas conditions
The product information specifies operation in up to 100% RH non-condensing ambient humidity and states that high-humidity hydrogen detection does not require drying pretreatment. It also lists resistance to interference from specified hydrocarbon, carbon monoxide, carbon dioxide, alcohol, and hydrogen sulfide backgrounds. Confirm your actual gas composition and operating conditions when selecting a configuration.
Hazardous-area installation
The stated explosion-protection marking is Ex db IIC T5 Gb, with an IP66 enclosure protection rating. The source documentation lists use in Zone 1 and Zone 2 explosive gas atmospheres for gas groups IIA, IIB, and IIC and temperature classes T1 to T5. Verify the required site classification and applicable certificates for your project before purchase.
For a configuration review, share the target hydrogen range, background gas composition, humidity, sample pressure, installation details, required signal interfaces, and hazardous-area classification with our team. This supports selection of an online hydrogen analyzer for high-humidity process gas.
Key product features
High-humidity hydrogen monitoring
Specified for high-humidity environments up to 100% RH non-condensing, without drying pretreatment for the stated high-humidity detection use.
In-line pipeline installation
Supports direct pipeline installation for continuous monitoring; confirm sample pressure and connection details against the process.
Multiple system interfaces
Supports 4–20 mA analog transmission, RS-485 communication, and switch-type alarm signals for system integration.
Local display and remote adjustment
A high-brightness OLED displays readings locally, and infrared remote adjustment supports operation without opening the enclosure.
Hazardous-area protection
The published marking is Ex db IIC T5 Gb and the enclosure rating is IP66; confirm project certification and site requirements.
APPLICATIONS
Typical applications
Water electrolysis hydrogen production
Monitor hydrogen concentration in hydrogen production and related process gas systems.
Hydrogen–natural gas blending
Measure hydrogen concentration in blending and gas-quality processes; confirm the selected measuring range and background-gas conditions.
Ammonia cracking and methanol reforming
Support online hydrogen monitoring in hydrogen-generation processes.
Fuel-cell system test benches
Integrate hydrogen concentration readings into fuel-cell testing and process control systems.
Energy storage power stations
Use online hydrogen monitoring as part of gas process supervision, subject to site-specific engineering review.
PDM400 Online Hydrogen Analyzer technical specifications and integration requirements
| Parameter | Specification |
|---|---|
| Target gas | Hydrogen (H₂) |
| Measurement range | (0–4)% Vol or (0–10)% Vol; customizable range |
| Additional detection capability stated in product features | Up to (0–100)% Vol; confirm the applicable range and configuration for your application |
| Measurement error | ±5% F.S |
| Display resolution | 0.01% Vol |
| Response time (T90) | <60 s |
| Sampling / installation method | In-line pipeline installation |
| Sample gas pressure | ≤1 MPa |
| Ambient temperature | −20 to +70 °C |
| Ambient humidity | 0–100% RH, non-condensing |
| Signal interfaces | 4–20 mA analog; RS-485; switch-type alarm signals |
| Display | High-brightness OLED local display |
| Remote adjustment | Infrared remote adjustment; operation without opening the enclosure |
| Specified background-gas interference | Product information states no interference from 3% HC, 1000 ppm CO, 3% CO₂, alcohol, and 100 ppm H₂S |
| Explosion-proof marking | Ex db IIC T5 Gb |
| Enclosure protection | IP66 |
| Hazardous-area use stated by manufacturer | Zone 1 / Zone 2; gas groups IIA, IIB, IIC; temperature classes T1–T5 |
Confirm the measuring range, output, power supply, and process conditions for your application when requesting a quotation.
What to include in your inquiry
For a project-specific PDM400 Online Hydrogen Analyzer quotation and application review, share your target measurement range, gas composition, operating temperature and humidity, pressure, installation method, required signal output, and project location. This helps our team assess the right configuration for your hydrogen monitoring or gas analysis system.
Send your application detailsFAQ
Frequently asked questions about PDM400 Online Hydrogen Analyzer selection and applications
Find guidance on PDM400 Online Hydrogen Analyzer measuring range, installation, operating conditions, and integration with hydrogen monitoring systems.
What measuring ranges are available for the PDM400?
The published standard ranges are 0–4% Vol and 0–10% Vol, with customizable ranges. The product information also mentions detection up to 0–100% Vol in its feature description. Confirm the required range and configuration with the supplier for your application.
Can the analyzer monitor hydrogen in high humidity?
The manufacturer states that the analyzer supports high-humidity hydrogen detection up to 100% RH non-condensing and does not require drying pretreatment for the described use.
How is the PDM400 installed?
The analyzer supports in-line pipeline installation. The stated sample gas pressure is up to 1 MPa; verify connection, pressure, and process compatibility before installation.
Which output signals can be used for integration?
The published interfaces include 4–20 mA analog output, RS-485 communication, and switch-type alarm signals. Confirm wiring and protocol details for your control system.
Is the PDM400 suitable for hazardous areas?
The published marking is Ex db IIC T5 Gb, with stated Zone 1 and Zone 2 applications for gas groups IIA, IIB, and IIC and temperature classes T1–T5. Confirm the certificate and site classification for the intended installation.
What information should I provide for a quotation?
Share your target hydrogen range, background gas composition, humidity, pressure, installation method, required signal interfaces, hazardous-area classification, and project location.
Discuss PDM400 Online Hydrogen Analyzer for your application
Send your operating conditions and project requirements for a technical review and quotation.
Contact the Sales Team