Overview

Today, the most common method of producing green hydrogen is water electrolysis, a process that uses electricity from renewable sources to split water into hydrogen and oxygen. However, at constant hydrogen concentration, sensor signals may be influenced by increasing water vapor fractions, potentially leading to measurement deviations of up to approximately 2% H2 under humid conditions!

Hydrogen concentrations between 4 and 77 vol.% can produce explosive gas mixtures. Therefore, it is very important to eliminate and correct for humidity effects in catalytic combustion-based, metal oxide semiconductor-based and thermal conductivity-based hydrogen sensors during green hydrogen production.Without humidity compensation, water vapor may cause ~1–3% H₂ measurement error in TCD, and >5% under high moisture conditions.

Our new thermal conductivity H2 analyzer uses a hybrid equation algorithm to compensate for the effects of humidity and temperature on thermal conductivity sensors, providing a new better solution for the green hydrogen energy industry and a better future!

Principle

Thermal conductivity gas analyzer is an effective method to measure one of two components in a gas mixture (the thermal conductivities differ a lot). Mainly used to measure the content of hydrogen (H2), carbon dioxide (CO2), argon (Ar), etc. 

When the sample gas enters the thermal conductivity cell, and a thermistor is used above the film to maintain a constant temperature. In this way, a small cavity is formed below and above the membrane, and the measurement gas can diffuse into it. In this way, the heat loss caused by the thermal conductivity of the sample gas is compensated by heating, and the power required to maintain a constant temperature of the membrane is a measurement of the thermal conductivity of the measured gas.

Advantage

★Built-in temperature and humidity compensation

★ High-accuracy measurement

★ Low drift

★ Rugged and durable design

★ Long life

★ Fast response

Features

• Quick and convenient

    The English navigation menu can be operated easily.

• Process safety

    1.8" color LCD screen, magnetic button operation and debugging

    LED alarm(NAMUR NE107), clearly visible from long distances and in dark areas

    Alarm immediately, safe the process

• Powerful self-diagnosis function

    Built-in heartbeat monitoring function and watchdog

    Monitor the status of transmitter and sensors, and promptly remind customers to take necessary maintenance

    High-standard hardware and software security and password protection

• ATEX / IECEx Exd II CT4  Optional

• 2 Relays (2A, 230V AC/DC freely set alarm) and 1 Relay (System alarm)

• RS485 MODBUS communication

Application

★ Water electrolysis to produce hydrogen

★ Hydrogenation unit

★ Hydrogen-cooled generator

★ University and research

★ Metal heat treatment/welding

★ Chemicals/Pharmaceuticals

Measurement components and ranges

• H2:         0 ~ 1% ~100%

Product datasheet: Hydrogen Analyzer , if you need more information, please contact us at sales@mzdd.de.

Hydrogen Analyzer, TCD Analyzer, Green Hydrogen