Air & Space

Maximum safety for hydrogen drives - with high-precision sensor technology and innovative burners.

Hydrogen technology soars

The aerospace industry is increasingly relying on hydrogen as a clean source of propulsion to drastically reduce emissions. Hydrogen is used directly as an energy source or as the basis for “”Sustainable Aviation Fuel”” (SAF). However, extreme operating conditions and the highest safety requirements make its use particularly challenging.

Our hydrogen sensors ensure continuous monitoring of the fuel supply and detect the smallest leaks, while our combustion engines enable efficient energy generation – for the next generation of emission-free aircraft and rocket engines.

  • Space drives
  • Aviation: Hydrogen airplane

Our industry-specific products

Catalytic purification and upgrading of hydrogen

Sensor for H2 Purity measurement

Sensor for Automotive

1 kW H2 catalytic converter, H2 Filter

10 kW H2 catalytic converter, H2 electrolysis Filterr

25 kW H2 catalytic Converter

50 kW H2 catalytic Converter

O2 sensor for O2 measurement in electrolysis gas

Pressure, temperature and humidity Sensor

Sensor for H2 exhaust gas Measurement

High-temp. H2 sensor optionally Also with ATEX

Sensor for Industrial applications

The perfect addition for reading and adjusting

Cable with M12 plug

Cable with Amphenol plug

NEO120 adapter

NEO130 adapter

NEO150 adapter

NEO160 adapter

NEO170 adapter

Heating cartridge 28V

Heating cartridge 24V

Heating cartridge 5V

DeOxo-Kat NEO330

Catalytic purification and upgrading of hydrogen

Catalytic purification and refinement of hydrogen

Hydrogen produced by electrolysis typically contains small residual amounts of oxygen. However, highly pure hydrogen is required for use in fuel cells and other sensitive applications. Generally, the oxygen content in the hydrogen stream must not exceed 5 ppmv in order to obtain, for example, 99.9995% pure H2.

The DeOxo-Kat NEO330 is a catalytic purification system designed for the efficient removal of oxygen from hydrogen streams originating from electrolysis plants. A water-free or pre-dried hydrogen stream is a prerequisite for operation.

Within the nanostructured catalyst, the remaining oxygen reacts with hydrogen to form water. The resulting water can then be removed from the gas stream using suitable drying systems. This allows the oxygen content to be reliably reduced to levels below 5 ppmv, depending on the operating conditions.

The DeOxo-Kat NEO330 thus enables the purification of electrolytic hydrogen to a quality that meets the requirements of modern fuel cells and other highly sensitive hydrogen applications.

Suitable for, e.g., 5 MW electrolysers,

  • H₂ volume flow rate: 1,020 Nm³/h
  • O₂ range: 0 – 5,000 ppm
  • Max. water content: 800 ppm
  • Operating temperature: 30 °C – 80 °C
  • Max. operating pressure: 45 bar @ 80°C

For further technical details on the NEO330, please refer to the technical ‘DATA SHEET’ or click on ‘REQUEST’.

Data sheetRequest

NEO1441

Sensor for H2 Purity measurement

Sensor system for measuring impurities in hydrogen gas with temperature and pressure-compensated signal evaluation for automotive applications. Applicable in the range: 0.6 – 5 bar a and -40°C – 85°C.

Most important features:

  • Measurements in the range of 0-10,000 ppmv Impurities in H2
  • Carrier gas hydrogen
  • Encrypted CAN communication on demand
  • Measuring signal independent of pressure, temperature and humidity
  • The gas concentration is not changed by the measurement.
  • Oxygen is not required for the measurement.
  • Signal output via CAN 2.0A
  • Connectors and contacts for crimping are included
  • Factory calibrated and ready for immediate use
Data sheetRequest

NEO1XXX

Sensor for Automotive

The smart, simple version of our high-tech H2 concentration sensors are the sensors in the “neoOne” series (neo1XXX). They are significantly more cost-effective and smaller. Created from AEC-Q100 components, the sensor arrived from the factory pre-calibrated for immediate use.

Most important features:

  • Possible measuring ranges:
    • 0-5 vol.-% H2 NEO1005
    • 0-10 vol.-% H2 NEO1010
    • 0-100 vol.-% H2 NEO1100
  • Pressure range: 0.6 – 1.5 bara
  • Humidity: 0 – 100% r.h. (non-condensing)
  • Temperature measuring range: -40°C – 85°C (short-term up to 105°C).
  • Carrier gases: air, nitrogen, oxygen depleted air available
  • Measuring signal independent of pressure, temperature and humidity
  • Signal output via CAN 2.0 A/B with 125/250/500 kbps

The gas concentration is not changed by the measurement and oxygen is not required for operation.

Data sheetRequest

NEO305

1 kW H2 catalytic converter, H2 Filter

System for flameless hydrogen combustion in a wide concentration range, outside the ignition limits. Conversion of hydrogen into usable heat energy and water by catalytic reaction with oxygen.

Typical applications of our catalysts:

  • Catalytic, flameless, thermal combustion of H2/air gas mixtures for heat recovery and/or exhaust gas purification on an industrial scale
  • Fine purification of gases by removing minimal impurities
  • Combustion of hydrocarbon gas mixtures (at elevated starting temperature)
  • Catalytic post-combustion of fuel cell exhaust gases or electrolysis gas
  • Removal of oxygen or hydrogen residues from electrolysis gas e.g. purification of air or helium
  • Depletion of oxygen or hydrogen in chemical processes
  • Safety technology, explosion prevention, fire prevention (through O2 discharge)

Further technical details on the NEO305 in 1 inch pipe, with max. H2 flow: 0.4 ms/h and thermal output of 1 kW can be found in the technical “Data sheet”.

Data sheetRequest

NEO324

10 kW H2 catalytic converter, H2 electrolysis Filterr

The NEO324 is a “smaller version” of the NEO342, e.g. to burn (waste) hydrogen in a wide concentration range without flames or emissions and to utilize the heat energy. The NEO324 can also be used to purify a helium gas stream of hydrogen or electrolysis gases. Other air-gas mixtures can also be burned. The NEO324 catalytic converter has a diameter of 66 mm.

Typical applications:

  • Catalytic, flameless, thermal combustion of H2/air gas mixtures for heat recovery and/or exhaust gas purification on an industrial scale
  • Fine purification of gases by removing minimal impurities
  • Combustion of hydrocarbon gas mixtures (at elevated starting temperature)
  • Catalytic post-combustion of fuel cell exhaust gases or electrolysis gas
  • Removal of oxygen or hydrogen residues from electrolysis gas, e.g. purification of air or helium
  • Depletion of oxygen or hydrogen in chemical processes can be used for boil-off management
  • DeOxy-Cat
  • Safety technology, explosion prevention, fire prevention (through O2 discharge)

Further technical details on the NEO324 with a diameter of 66 mm, max. H2 flow: 3.5 ms/h and thermal output of 10 kW can be found in the technical “Data sheet”.

Data sheetRequest

NEO342

25 kW H2 catalytic Converter

You can use the NEO342 H2 oxidizer to burn (waste) hydrogen, for example, in a wide concentration range without any flames or emissions (catalytic combustion) and use the heat energy. The NEO342 can also be used to purify a helium gas stream of hydrogen or electrolysis gases (oxygen purification from hydrogen and hydrogen purification from oxygen). Other air-gas mixtures can also be burned.

Typical applications:

  • Catalytic, flameless, thermal combustion / oxidation of H2/air gas mixtures for
  • Heat recovery and/or waste gas purification on an industrial scale
  • Fine purification of gases by removing minimal impurities
  • Combustion of hydrocarbon gas mixtures (at elevated starting temperature)
  • Catalytic post-combustion of fuel cell exhaust gases or electrolysis gas
  • Removal of oxygen or hydrogen residues from electrolysis gas, e.g. purification of air or helium
  • Depletion of oxygen or hydrogen in chemical processes
  • Can be used for boil-off management (boil-off gas (BOG)) or as a “passive flare”
  • DeOxy-Kat, alternative to thermal afterburning (TNV)
  • Safety technology, explosion prevention, fire prevention (through O2 discharge)

Further technical details on the NEO342 with an internal diameter of 110 mm, max. H2 flow of 8.5 ms/h and thermal output of 25 kW can be found in the technical “Data sheet”.

Data sheetRequest

NEO361

50 kW H2 catalytic Converter

Even with our largest H2-Oxikat NEO361, you can, for example, burn (waste) hydrogen in a flameless and emission-free manner, in a wide concentration range (catalytic combustion) and use the heat energy. The NEO361 can also be used to purify a helium gas stream of hydrogen or electrolysis gases (oxygen purification of hydrogen and hydrogen purification of oxygen). Other air-gas mixtures can also be combusted.

Typical applications:

  • Catalytic, flameless, thermal combustion / oxidation of H2/air gas mixtures for
  • Heat recovery and/or waste gas purification on an industrial scale
  • Fine purification of gases by removing minimal impurities
  • Combustion of hydrocarbon gas mixtures (at elevated starting temperature)
  • Catalytic post-combustion of fuel cell exhaust gases or electrolysis gas
  • Removal of oxygen or hydrogen residues from electrolysis gas, e.g. purification of air or helium
  • Depletion of oxygen or hydrogen in chemical processes
  • Can be used for boil-off management (boil-off gas (BOG)) or as a “passive flare”
  • Can be used as a “passive flare”, alternative to thermal post-combustion (TNV)
  • Production of CO2-neutral process heat

Further technical details on the NEO342 with an internal diameter of 162.3 mm, max. H2 flow of 17 ms/h and thermal output of 50 kW can be found in the technical “Data sheet”.

Data sheetRequest

NEO445

O2 sensor for O2 measurement in electrolysis gas

Oxygen concentration sensor for measuring the oxygen concentration in hydrogen with temperature-, pressure- and humidity-compensated signal evaluation for automotive or industrial applications

Important properties:

  • Temperature measuring range: 40°C – 120°C
  • Measuring ranges: 0-5 vol.-% O2
  • Carrier gas: Hydrogen
  • Measurement of electrolysis gases (O2 in H2)
  • Pressure range: 0.6 – 6 bar absolute
  • Humidity: 0 – 100% r.h. (non-condensing)
  • The gas concentration is not changed by the measurement.
  • Signal output via CAN 2.0, Modbus RTU via RS485, 0-10V or 4-20mA
Data sheetRequest

NEO480

Pressure, temperature and humidity Sensor

Moisture-measuring triple sensor system with temperature and pressure-compensated signal evaluation. Typical applications are the detection of moisture in combustibles and in automobiles

Important properties:

  • Measuring range humidity dew point up to +90°C
  • Independent of pressure and temperature
  • Error control
  • Replacement for Vaisalla humidity sensors
  • Carrier gas: air, nitrogen, hydrogen
  • Pressure range: 0.6 – 6 bar absolute
  • Humidity: 0 – 100% r.h. (non-condensing)
  • The gas concentration is not changed by the measurement.
  • Signal output via CAN 2.0A / B or Modbus RTU/RS485

ATEX: Zone I available on request

Data sheetRequest

NEO952

Sensor for H2 exhaust gas Measurement

Hydrogen sensor system for automotive applications for monitoring exhaust gases up to 5% H2 by volume at exhaust gas temperatures of up to 400°C.

Our hydrogen measurement system can quickly and accurately measure hydrogen in the exhaust gas of hydrogen internal combustion engines (ICE) / H2-fuelled petrol engines or solid oxide fuel cells (SOFC).
The measured values are output temperature-compensated via the CAN bus 2.0A/B with 125/250/500/1000 kbps.

Most important features:

  • Measurements to just above the lower explosion limit, i.e. 0 – 5 vol.-% H2
  • Tolerance:± 0.5 % by volume H2
  • Temperature measuring range: -40 to 400 °C
  • Pressure range: 0.6 to 1.5 bar absolute
  • Humidity: 0 to 100 % r.h. (non-condensing)
  • Response time: t90< 10 s
  • Recovery time: t10< 10 s
  • Signal: CAN 2.0A/B with 250/500 kbps
Data sheetRequest

NEO9XXHT

High-temp. H2 sensor optionally Also with ATEX

The NEO974, NEO983 and NEO986 sensor systems are also available ATEX Zone I certification. These hightemperature sensorsare specified for use up to 120°C and are appropiate to use in both automotive and industrial applications.

Most important features:

  • Possible measuring ranges:
    • 0-5 vol.-% H2 NEO974HT-ATEX
    • 0-10 vol.-% H2 NEO983HT-ATEX
    • 0-100 vol.-% H2 NEO986HT-ATEX
  • II 2G/- Ex db IIB+H2 T1 Gb/- at -40°C< Ta< 100°C
  • Pressure range: 0.6 – 6 bara
  • Humidity: 0 – 100% r.h. (non-condensing)
  • Temperature measuring range: -40°C – 120°C.
  • Carrier gases: air, nitrogen, oxygen depleted air aviailable
  • Measuring signal independent of pressure, temperature and humidity
  • Signal output via CAN 2.0 A/B, Modbus RTU via RS485, 0-10V or 4-20mA
  • Replacement system for the AMS HLS-442, HLS-440P and the HPS-100

The gas concentration is not changed by the measurement and oxygen is not required for the measurement.

Data sheetRequest

NEO9XXX

Sensor for Industrial applications

Sensor system for measuring the hydrogen concentration in air, oxygen, nitrogen or oxygen-depleted air with temperature-, pressure- and humidity-compensated signal evaluation for automotive or industrial applications. Applicable in the range: 0.6 – 5 bara, 0 – 100% r.h. (non-condensing) and 40°C – 120°C. A mathematical prediction algorithm ensures very fast response times.

Important properties:

  • Measuring ranges: 0-5 vol.-% H2 (NEO9005), 0-10 vol.-% H2 (NEO9010) or 0-100 vol.-% H2 (NEO9100)
  • Tolerance:± 0.3 vol.-% H2 or± 2 vol.-% H2
  • Pressure range: 0.6 – 6 bara
  • Humidity: 0 – 100% r.h. (non-condensing)
  • Temperature measuring range: -40°C – 120°C.
  • Carrier gases air, N2, O2, oxygen-depleted air, methane, synthetic natural gas are possible
  • Measuring signal independent of pressure, temperature and humidity
  • Signal output via CAN 2.0, Modbus RTU via RS485, 0-10V or 4-20mA
  • Oxygen is not required for the measurement. No sample extraction necessary.
  • Can also be used in the intake manifold for H2 direct injection

Suitable for concentration measurement in the ventilation of the crankcase or in the recirculation of the fuel cell (recirculation sensor; for controlling the purge valve)

Data sheetRequest

CAN-Logger

The perfect addition for reading and adjusting

The neoCANLogger is the perfect addition for reading and readjusting our NEO9XXA, NEO9XXHTA and NEO4XXA series sensors. It enables the automatic translation of the CAN 2.0 A/B signal into readable data.

Most important features:

  • Data logging to SD card with date and time
  • Live measurement data on TFT display
  • Simple CAN ID setting, zero point adjustment
  • Supply with 12 to 30V
  • Continuous translation and sending of data
  • Signal output in readable format
  • Possibility to transform into other signal forms, such as 4-20mA or 0-10V

The scope of delivery includes: neoCANLogger, 12V plug-in power supply, 2x spring contact plugs, 32GB SD card

Data sheetRequest

Cable

Cable with M12 plug

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Cable

Cable with Amphenol plug

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NEO120

NEO120 adapter

Screw-in adapter for enclosure mounting

Adapter for our gas sensors of the NEO9XX, NEO9XXX, NEO9XXHT and NEO4XX series. This adapter allows the installation of a gas concentration sensor by screwing it into an enclosure. It is available in various connection threads, including G1/4‘, G1/2’, NPT 1/4‘ and NPT 1/2’. Other sizes are available on request.

Key features:

  • Fast integration of hydrogen sensors into existing systems
  • Simple design enables flexible adaptation of the adapters to individual requirements
  • Additional splash guard grid or sintered metal disc keeps water drops, splash water etc. away from the sensor opening
  • No negative influence on the gas concentration measurement of the sensors; possibly longer response and recovery times
  • With fitting and mounting screws for NEO20X heating cartridges to prevent condensation
Data sheetRequest

NEO130

NEO130 adapter

Transmitter adapter for stainless steel tubes

Adapter for our gas sensors of the NEO9XX, NEO9XXX, NEO9XXHT and NEO4XX series. This adapter allows the integration of a gas concentration sensor into a stainless steel tube, for example to measure the gas composition in the recirculation loop of a fuel cell. It is available in a variety of thread sizes, including G1/8‘, G1/4’, G1/2‘, G1’, G2‘ and NPT1/4’. Other sizes are available on request.

Key features:

  • Fast integration of hydrogen sensors into existing systems
  • Simple design allows flexible adaptation of the adapters to individual requirements
  • Additional splash guard grid or sintered metal disc keeps water drops, splash water etc. away from the sensor opening
  • No negative influence on the gas concentration measurement of the sensors; possibly longer response and recovery times
  • With fitting and mounting screws for NEO20X heating cartridges to prevent condensation
Data sheetRequest

NEO150

NEO150 adapter

Transmitter adapter for plastic pipes

Adapter for our gas sensors of the NEO9XX, NEO9XXX, NEO9XXHT and NEO4XX series. This adapter can be used to integrate a gas concentration sensor into a plastic pipe, for example to monitor the exhaust gas composition of a fuel cell. The adapter is available with different connection diameters such as 40 mm, 50 mm and G2’. Other sizes are available on request.

Key features:

  • Fast integration of hydrogen sensors into existing systems
  • Simple design allows flexible adaptation of the adapter to individual requirements
  • Additional splash guard grille or sintered metal disc keeps water droplets, splash water, etc. away from the sensor opening
  • No negative influence on the gas concentration measurement of the sensors; possible extension of the response and decay time
  • With fitting and mounting screws for NEO20X heating cartridges to prevent condensation
Data sheetRequest

NEO160

NEO160 adapter

Adapter for our gas sensors of the NEO9XX, NEO9XXX, NEO9XXHT and NEO4XX series. This wall bracket is used to mount a gas concentration sensor on a wall or ceiling, e.g. for room monitoring.

Important features:

  • Fast integration of hydrogen sensors into existing systems
  • Simple design allows flexible adaptation of the adapter to individual requirements
  • Additional splash guard grille or sintered metal disc keeps water droplets, splash water, etc. away from the sensor opening
  • No negative influence on the gas concentration measurement of the sensors; possible extension of the response and decay time
  • With fitting and mounting screws for NEO20X heating cartridges to prevent condensation
Data sheetRequest

NEO170

NEO170 adapter

Bypass adapter for large pipe diameters

Adapter for our gas sensors of the NEO9XX, NEO9XXX, NEO9XXHT and NEO4XX series. The bypass adapter enables the installation of a gas concentration sensor in pipes with a large inner diameter and high volume flows, optionally also in humid environments. It is available in different connection sizes, including DN 150, DN 200 and DN 250. Other sizes are available on request.

Key features:

  • Fast integration of hydrogen sensors into existing systems
  • Simple design allows flexible adaptation of the adapters to individual requirements
  • Additional splash guard grille or sintered metal disc keeps water droplets, splash water, etc. away from the sensor opening
  • No negative influence on the gas concentration measurement of the sensors; possible extension of the response and decay time
  • With fitting and mounting screws for NEO20X heating cartridges to prevent condensation
Data sheetRequest

Heating cartridge

Heating cartridge 28V

NEO20X heating cartridges to prevent condensation

The NEO20X heating cartridges are PTC heating elements that are operated with a fixed supply voltage of 5V, 24V or 28V. They are used to heat the sensor and thus prevent condensation of water vapour. These heating cartridges are not required for the actual measurement, but are used in extremely humid measurement environments to prevent the temperature from falling below the dew point.

Data sheetRequest

Heating cartridge

Heating cartridge 24V

NEO20X heating cartridges to prevent condensation

The NEO20X heating cartridges are PTC heating elements that are operated with a fixed supply voltage of 5V, 24V or 28V. They are used to heat the sensor and thus prevent condensation of water vapour. These heating cartridges are not required for the actual measurement, but are used in extremely humid measurement environments to prevent the temperature from falling below the dew point.

Data sheetRequest

Heating cartridge

Heating cartridge 5V

NEO20X heating cartridges to prevent condensation

The NEO20X heating cartridges are PTC heating elements that are operated with a fixed supply voltage of 5V, 24V or 28V. They are used to heat the sensor and thus prevent condensation of water vapour. These heating cartridges are not required for the actual measurement, but are used in extremely humid measurement environments to prevent the temperature from falling below the dew point.

Data sheetRequest