AST2000 & AST4000 – Hydrogen pressure transducers
Item number: AST2000 / AST4000 Applications Chemical industryRailways & Rail TransportVehicles & Road TrafficElectrical industryEnvironmental & Energy technology
Price on request
Delivery time:Delivery time on request
The AST2000 & AST4000 sensor series were specifically designed for hydrogen pressure sensing applications. Tested to a variety of hydrogen and automotive standards, the hydrogen series combines the best mechanical design for hydrogen measurement with high performance.
Due to its one-piece design without welded diaphragm there are no possible leak paths and weak pints. Containment is impossible as there are no oil-filled cavities which could fill with hydrogen. The only wetted material is stainless steel 316L.
The transmitters are digitally compensated with ratiometric 0.5 .. 4.5 V, 1 .. 5 V or 4 .. 20 mA output. They are available for pressure ranges of 20 bar, 448 bar and 900 bar. With the high accuracy option the total error band (TEB) can be as low as just 1 % while the burst pressure exceeds the nominal pressure rating by a factor of 5.
Applications include all apparatus which make use of pressurized hydrogen such as fuel cells, hydrogen storage, hydrogen filling stations, test stands or back up power generators.
Types of the AST2000 and AST4000
Due to its one-piece design without welded diaphragm there are no possible leak paths and weak pints. Containment is impossible as there are no oil-filled cavities which could fill with hydrogen. The only wetted material is stainless steel 316L.
The transmitters are digitally compensated with ratiometric 0.5 .. 4.5 V, 1 .. 5 V or 4 .. 20 mA output. They are available for pressure ranges of 20 bar, 448 bar and 900 bar. With the high accuracy option the total error band (TEB) can be as low as just 1 % while the burst pressure exceeds the nominal pressure rating by a factor of 5.
Applications include all apparatus which make use of pressurized hydrogen such as fuel cells, hydrogen storage, hydrogen filling stations, test stands or back up power generators.
Types of the AST2000 and AST4000
- Pressure ranges: 20 bar, 448 bar, 900 bar
- Output: 0.5 .. 4.5 V ratiometric, 1 .. 5 V, 4 .. 20 mA
- Process connection: 7/16-20 UNF male, 3/8-24 UNF male
- Standard or high accuracy EC79
Attributes of AST2000 & AST4000 – Hydrogen pressure transducers
May differ from supplier data
Basic data
Pressure measurement range 0 to 900 bar
Pressure type Relative pressure
Sensor type Pressure transmitter
Product environmental influences (protection class/temperature)
Operating temperature range 0 to 50 °C
Protection class/protection class of electr. connection IP66
Housing / Design / Mechanical data / Materials
Housing material (see data sheet for more information) Stainless steel
Design/housing Cylindrical
Typical applications
Typ. applications Automotive Test benches Hydrogen production Show all Rail
Approvals / Certificates / Performance level / Integrity level
Approvals/certificates/test marks EC79/2009