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Hydrogen Pressure Sensor Certified for Use on Fuel-Cell Vehicles

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Hydrogen Pressure Sensor Certified for Use on Fuel-Cell Vehicles
Hydrogen Pressure Sensor Certified for Use on Fuel-Cell Vehicles
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(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

American Sensor Technologies Inc.
450 Clark Drive
Mt. Olive, NJ, 07828
USA



Press release date: December 1, 2011

Mt. Olive, NJ - American Sensor Technologies has developed the AST 2000H2 Hydrogen ASIC Pressure Sensor for use on hydrogen-powered vehicles and in other emerging hydrogen applications. The AST 2000 Hydrogen Pressure Sensors are already certified for use by European and Asian automobile manufacturers as on-board hydrogen sensors for fuel cell vehicles. Anticipated volume production for these vehicles will begin 2014/2015.

"Hydrogen is gaining popularity as an alternate clean fuel source for powering surface transportation such as cars, bus fleets, boats, and light trucks," remarks Karmjit Sidhu. "While environmentally-friendly, hydrogen poses new challenges in the types of pressure sensors that can be used safely and accurately during hydrogen service with a minimum 10 years life."

To overcome hydrogen permeability and embrittlement, the AST 2000H2 Hydrogen Pressure Sensors employ a one-piece thick diaphragm, free of internal O-rings, welds or fill fluids, that keep hazardous media out, eliminating the chance of hydrogen permeation and eventual sensor failure. To reduce the chance of embrittlement caused by long-term exposure to hydrogen, units are constructed from a version of high strength 316L stainless steel wetted parts that promote long life and resistance to media corrosion. AST's proprietary Krystal Bond(TM) Technology further enhances performance by reducing long-term drift to just 0.25% per year. The technology also utilizes an inorganic bond, free from glue line failure and outgassings.

Tested to a variety of hydrogen and automotive standards including TUV and EIHP, the AST2000H2 pressure sensors combine the best mechanical design for hydrogen measurement with high performance digital compensation. 79/2009/EC approval was obtained for the 2MPa range of the Model AST2000 Pressure Sensors that are used as components on the vehicle hydrogen regulator controlling hydrogen flow to the fuel cell stack. Also approved are the 35MPa range of these pressure sensors that are typically used on Class 3 hydrogen tanks for use on buses, forklifts, cars, farm machinery, off-road vehicles and stationary back-up power systems. In addition, the sensors have been tested under the supervision of TUV for 70MPa range for Class 4 tanks and are awaiting EC79 approval.

For more information on the AST 2000 Hydrogen Pressure Sensors, please refer to the web site at http://www.astsensors.com/digitally_compensated_pressure_transducers/AST2000H2 or contact the factory at sales@astsensors.com.

About American Sensor Technologies, Inc.
American Sensor Technologies, Inc. (AST) manufactures MEMS pressure sensors, pressure transducers and pressure transmitters that offer the best price-performance ratio in the industry. Manufactured in New Jersey, AST pressure sensing products are built with a full selection of hazardous area and industrial approvals to service customer applications. Common industries utilizing AST sensor products are industrial OEM hydraulic systems, fuel cells, medical gases, HVAC, refrigeration (ammonia, Freon, CO2), Oil & Gas exploration and production, and off-road vehicles. AST's exclusive, proprietary Krystal Bond(TM) Technology (an advanced process in which inorganic materials are molecularly diffused onto a metallic surface in the presence of certain gases) produces high-performance pressure sensing products through the use of a single piece of stainless steel. AST offers a variety of UL and CSA approvals for Explosion-proof, Intrinsically Safe, and Non-incendive pressure transmitter applications. For more information on AST pressure sensing products and technology, please visit www.astsensors.com. Through the acquisition of noted LVDT manufacturer Macro Sensors (www.macrosensors.com), AST also offers a full line of linear/rotary position sensors, as well as related instrumentation.

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