Experts in hydrogen measurement
+49 (0)69 24 75 44 980
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Industry leading precision & speed: H2 in N2 50ppm at 30 ms response time
Survives water, measures accurately: No destruction on contact with water & reduced cross-sensitivity
Safe, low maintenance technology: TCD, no chemical, optical or moving parts
Versatile and cost-efficient: measurement from a few ppm to 100 vol% no sample preparation necessary
INNOVATION
in hydrogen measurement

 

Hydrogen Production

 

Fuel Cell Applications

 

Hydrogen in Natural Gas

 

Process Analysis

 

Customized Solutions

ELECTROLYSIS

  • Monitoring of the lower explosion level in Air (LEL) 0 – 4 Vol% H2 in Air

  • Monitoring of the lower explosion limit (LEL) 0 – 4 Vol% H2 in O2

  • Monitoring of the upper explosion limit (UEL) 0 – 4 Vol% O2 in H2

  • Monitoring of Hydrogen Quality 99,99 (yes/no) with TCD 99-100 Vol% H2 in O2

Hydrogen Generator

Challenges

Challenges for H2 measurement in electrolyzers:

  • Moisture in the process gas destroys the devices and falsifies measurements with thermal conductivity if no sample preparation is available
  • Cross-sensitivity compensation or dehumidification of the gas is required
  • Reaction times (t90) should be kept low in the process and require complex sample preparation
  • Some processes receive corrosive gases
  • High operating pressures and process temperatures require additional sample preparation

Advantages Archigas devices

Advantages of the TCD3000 for H2 measurement in electrolyzers:

  • Sensor is not destroyed by contact with condensate.
  • Significant reduction in the cross-sensitivity of the moisture to the measurement signal.
  • Response times of 30 ms
  • Pressures up to 200 bara are permissible. 700 possible on request
  • Corrosion resistance
  • Continuous online quality monitoring up to H2 4.0 (99,99)
  • Process gas temperatures up to 130°C
  • No additional costly sample preparation and bypass required
  • Reasonable price

FUEL CELL APPLICATIONS

  • Monitoring of the lower explosion level in Air (LEL) 0 – 4 Vol% H2 in Air & H2O

  • Monitoring of the Hydrogen purity 70-100 Vol% H2 in N2

  • Monitoring of the Hydrogen purity 70-100 Vol% H2 in N2
Hydrogen Generator

Challenges

Challenges for H2 measurement in electrolyzers:

  • Humidity in the process gas falsifies measurements with thermal conductivity
  • Cross-sensitivity compensation or dehumidification of the gas is required
  • The reaction times (t90) should be kept low in the process require complex sample preparation
  • Some processes receive corrosive gases
  • High operating pressures and process temperature require additional sample preparation

Advantages Archigas devices

Advantages of the TCD3000 for H2 measurement in electrolysers:

  • Humidity-independent measurement with thermal conductivity.
  • Short response times of less than one second.
  • Pressures up to 200 bara are permissible.
  • Corrosion resistance.
  • Continuous online quality monitoring up to H2 5.0 possible.
  • Process gas temperatures up to 100°C possible.
  • No additional costly equipment needed for quality measurement.
  • Reasonable price.

The hydrogen concentration in natural gas can be determined using the TCD300 SI.

The measurement is based on the principle of thermal conductivity and offers the advantage of being very fast, robust and stable over the long term. This measuring principle is best suited for (quasi-)binary gas mixtures, where only the sample gas and a background gas are present. As long as the background gas consists of one component or several components are in a stable ratio to each other, a very high accuracy of less than 1000 ppm can be expected. The fluctuations of the individual components of the background gas (natural gas) lead to a cross-sensitivity of the measurement.

Therefore, depending on the application, there are two ways of measuring H2 in natural gas in order to meet the high measurement requirements:

  1. The devices are located directly at the mixing node where hydrogen is mixed with natural gas. The measurement is organized in such a way that it is possible to switch between pure natural gas and the mixture in order to bring the background gas to zero.
  2. You know the matrix of possible components of your natural gas. This allows you to obtain an estimate from us as to whether the cross-sensitivity is within your tolerance.

Otherwise, we should expect the following cross-sensitivities:

  • A variation of ±1 vol% N2 leads to ± 700 ppm deviation of the H2 result.
  • A variation of ±1 vol% CO2 leads to a deviation of ± 1200 ppm.
  • FA variation of ±1 vol% O2 leads to ± 600 ppm deviation.

The devices are currently undergoing certification and target market adaptation. Functional prototypes with ATEX certification can be made available for testing purposes from August 2024.

For more information, please contact us.

Archigas GmbH is member of:

INFORMATION

For any further questions or quotes please do not hesitate to contact us using the contact form or contact information below.

Phone : +49 (0)69 247544980

Phone: +49 (0)69 24 75 44 980

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