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Hydrogen pressure sensor certified for use on fuel-cell vehicles
The AST 2000H2 hydrogen ASIC pressure sensor can be used on hydrogen-powered vehicles and applications, such as on-board vehicle cylinder pressure measurement, hydrogen regulator pressure measurement, hydrogen filling stations, hydrogen storage containers and test-stand equipment.
To overcome hydrogen permeability and embrittlement, the pressure sensors use a one-piece-thick diaphragm (free of internal O-rings, welds or fill fluids) that keeps hazardous media out. Units are constructed from a version of high-strength 316L stainless-steel wetted parts, promoting long life and resistance to media corrosion. AST's proprietary Krystal Bond technology further enhances performance by reducing long-term drift to just 0.25% per year. The technology's inorganic bond is free from glue-line failure and outgassings.
Tested to hydrogen and automotive standards, including TUV and EIHP, AST2000H2 pressure sensors combine the best mechanical design for hydrogen measurement with high-performance digital compensation. 79/2009/EC approval was obtained for the AST2000 pressure sensors' 2MPa range, used as components on the vehicle hydrogen regulator to control hydrogen flow to the fuel-cell stack. Also approved is the 35MPa range of these pressure sensors that are typically used on Class 3 hydrogen tanks for use in stationary backup power systems and more. American Sensor Technologies.
Select 10 at www.HydrocarbonProcessing.com/RS
High-performance fiber-optic cables for harsh industrial environments
Ruggedized, 10-gigabit multimode, tight-buffered fiber-optic cables are said to withstand the harsh industrial environments found in manufacturing, petrochemical and chemical plants, refineries and more. They offer exceptional bend, crush, impact and chemical resistance across a broad thermal operating range, and reportedly speed installation, reduce attenuation loss and maximize network uptime.
As opposed to loose-tube designs that have only one thin coating surrounding each optical fiber, the ruggedized tight-buffered fibers have two. In addition to the primary-fiber coating, each tight-buffered fiber has a secondary buffer that, together with the primary coating, reaches heavyweight proportions such as 387 microns. This is over six times thicker than the primary coating alone.
Additionally, a pressure-extruded (core-locked) or tightly bound outer jacket firmly binds all the fibers together so that the cable moves as a single, solid, rope-like unit. The ruggedized fiber-optic cables withstand caustic and volatile chemicals, excessive moisture and fungus, UV exposure and operating temperatures ranging anywhere from -55[masc ordinal]C to +124 [degrees]C. Optical Cable Corp.