Application Case of Xi'an Runlai RL-A200 Hydrogen Transmitter in an Electrolysis Water-to-Hydrogen Testing Equipment in

1,Industry Background

Driven by the dual-carbon strategy, green hydrogen has become a core focus of the new energy industry. Alkaline water electrolysis is currently the mainstream method for large-scale hydrogen production, and the performance testing of electrolyzers and the monitoring of hydrogen and oxygen gases are essential requirements in the industry.

Shandong A Energy Water Electrolysis Hydrogen Technology Development Co., Ltd. specializes in the research and development of small-scale precision alkaline electrolyzers, pressurized visual electrolyzers, and complete sets of water electrolysis hydrogen production testing equipment. The company provides services such as electrolyzer membrane durability testing, electrode durability testing, and full-cell operating condition simulation for university laboratories, energy companies, and electrode material manufacturers. However, there are two major pain points during equipment operation:

• High Risk: Damage to the electrolyzer membrane can lead to cross-contamination between hydrogen and oxygen. Hydrogen is a flammable and explosive gas, and exceeding concentration limits can easily cause combustion or explosion, requiring 24/7 real-time monitoring;
• Strict Testing Data Requirements: For scientific research testing scenarios, the company demands high-precision and stable hydrogen concentration detection data that can be quickly transmitted to the central control system for quantitative analysis of electrolyzer performance and membrane sealing;
• Complex Operating Conditions: The testing equipment operates in high-temperature and high-humidity environments with limited space, demanding exceptional explosion-proof capabilities, compact size, and installation compatibility from the instruments.

To address these monitoring challenges, Shandong A Energy Water Electrolysis Hydrogen Technology Development Co., Ltd. conducted comparative tests on multiple brands of instruments and ultimately selected the RL-A200 hydrogen transmitter from Xi'an Runlai Instrument Co., Ltd. for mass production and integration into its entire range of water electrolysis hydrogen production testing equipment, enabling round-the-clock online monitoring of hydrogen leaks and cross-contamination between hydrogen and oxygen

2,Xi'an Runlai RL-A200 Hydrogen Transmitter Product Introduction

The RL-A200 is an explosion-proof fixed hydrogen transmitter specifically developed by Xi'an Runlai for electrolysis water hydrogen production and hydrogen energy laboratory applications, tailored to meet the testing requirements of Hydrogen Boat Green Energy's precision equipment. Its core advantages include:

• High-precision sensing for scientific research testing
  Equipped with imported high-precision electrochemical sensors, the detection resolution can reach 0.1%, with an overall measurement accuracy of ±1.5% FS and a response time ≤10 seconds. It can capture subtle fluctuations in hydrogen concentration under dynamic conditions in electrolyzers, meeting the data accuracy requirements for quantitative testing in universities and research institutes.
• Explosion-proof design for high-risk hydrogen production environments
  The entire unit features an explosion-proof design, Ex-certified, suitable for high-temperature and high-humidity test chambers. It can operate stably in environments with water vapor and trace amounts of electrolyte evaporation from electrolysis equipment, eliminating potential hazards in hydrogen monitoring.
• Multiple signal outputs for convenient system integration
  Supports standard 4-20mA analog and RS485 Modbus-RTU dual signal outputs, with a transmission distance of over 500 meters. It seamlessly connects to Hydrogen Boat Green Energy's proprietary equipment PLC control systems, enabling real-time transmission of hydrogen concentration and alarm signals. Supports remote data collection and interlocking shutdown control based on operating conditions.
• On-site visual display for easy installation and maintenance
  Equipped with a high-definition OLED local display screen, real-time hydrogen concentration can be read directly at the site without the need for external terminals. The unit is compact and wall-mounted, fitting into tight installation spaces of testing equipment. Upper and lower limit alarm thresholds are fully adjustable across the entire range, and simple on-site calibration ensures long-term stable operation, significantly reducing subsequent maintenance costs.