JNYQ-H-91 Industrial Hydrogen Analyzer

Product Introduction

The JNYQ-H-91 Hydrogen Analyzer is an industrial gas analysis instrument designed for measuring hydrogen (H₂) concentration in gas mixtures. With a measurement range of 0–100%, it supports hydrogen purity monitoring and process gas analysis in industrial facilities, including steel plants, fertilizer plants, thermal power stations, and hydrogen production plants.

The analyzer features a single-bridge measuring circuit with compensation gas, digital signal processing, and a linearized measurement output. Its shock-resistant and corrosion-resistant thermal sensing component supports reliable operation under suitable industrial conditions. Selectable RS232 or RS485 communication and current output options facilitate integration with compatible monitoring and control systems.

Performance Features

1. Wide Hydrogen Measurement Range: Measures H₂ concentration from 0% to 100%.

2. Single-Bridge Measuring Circuit: Incorporates a compensation circuit and compensation gas for hydrogen measurement.

3.Advanced Digital Processing: Applies digital signal processing to measurement data.

4.Shock- and Corrosion-Resistant Sensing Component: Designed to withstand vibration and corrosive influences within specified operating limits.

5. Linearized Output: Provides a linearized measurement output for convenient reading and system integration.

6.Flexible Communication: Supports selectable RS232 or RS485 communication interfaces.

7. Current Signal Output: Provides selectable 0–20 mA or 4–20 mA output, with a specified load of 500 Ω.

8.Multi-Gas System Integration: Under the same conditions, compatible analyzer modules can be combined to measure up to four types of gas concentration.

9. Industrial Installation: Features a cold-rolled steel sheet housing and a compact form factor for suitable industrial installations.

Working Principle

The JNYQ-H-91 uses a thermal sensing and compensation measuring circuit to determine hydrogen concentration in a gas mixture. Differences in thermal conductivity between hydrogen and the background gas affect heat transfer at the sensing element. The measuring circuit converts the resulting changes into electrical signals, which are processed digitally to calculate the gas concentration.

The analyzer provides a linearized output for display and transmission to compatible monitoring or control systems. Since other gases can also influence thermal conductivity, the background gas composition and potential interference must be considered during calibration and application selection.

Note: Confirm the detailed sensing principle, required compensation gas, and gas-matrix compatibility with the manufacturer before final installation.

Technical Parameters

Note: Confirm the exact output configuration, contact ratings, and installation requirements for the selected unit.

Application Scenarios

• Steel Plants: Monitoring hydrogen concentration in suitable industrial gas streams.

•  Fertilizer Plants: Analyzing hydrogen content in ammonia synthesis processes.

• Thermal Power Plants: Monitoring hydrogen purity in generator hydrogen-cooling systems.

• Nuclear Power Plants: Supporting hydrogen purity monitoring in cooling systems and hydrogen monitoring in containment applications, subject to the site's safety and certification requirements.

• Hydrogen Production Plants: Measuring hydrogen concentration and purity in production-related gas streams.

•  Laboratories: Testing hydrogen concentration in combustion and gas analysis experiments.

• Multi-Gas Monitoring Systems: Integration with compatible analyzers for measuring up to four gas concentrations under the same operating conditions.

JNYQ-H-91 vs. General Hydrogen Gas Analyzers

Frequently Asked Questions

1. What is the JNYQ-H-91 hydrogen analyzer used for?

It measures hydrogen concentration in gas mixtures for applications such as ammonia synthesis, hydrogen cooling systems, hydrogen production, and industrial gas monitoring.

2. What is the measuring range of the JNYQ-H-91?

The specified range is 0–100% hydrogen, with an accuracy of ≤ ±1% of full scale.

3. Can the analyzer monitor hydrogen purity in power plant cooling systems?

Yes. It is listed for hydrogen purity monitoring in thermal power plant hydrogen-cooling systems. Site-specific requirements and compatibility with the gas stream should be verified.

4. What output signals does the JNYQ-H-91 support?

It supports selectable 0–20 mA or 4–20 mA current output and selectable RS232 or RS485 communication.

5. Can the JNYQ-H-91 be combined with other gas analyzers?

According to the supplied specifications, compatible units can be combined to measure up to four gas concentrations under the same conditions. Confirm module compatibility and configuration with the manufacturer.

6. What are the operating environment requirements?

The specified operating temperature is 5–45°C and relative humidity is 0–85%. The installation should be horizontal, protected from direct sunlight and mechanical shock, and free of strongly corrosive gases. The specified wind speed is no more than 1 m/s.

7. What is the response time?

The specified response time is no more than 15 seconds (T90).

8. Is the JNYQ-H-91 suitable for explosive or nuclear safety-critical environments?

The supplied specifications do not establish an explosion-proof rating or nuclear safety certification. Verify applicable certifications, environmental qualifications, and installation approvals before use in hazardous or safety-critical areas.