American Sensor Technologies Inc. (AST) has released its AST46SW explosion-proof pressure switch, which can be used in natural gas and hydrogen fuel cell refueling environments and applications.

The AST46SW offers a single-pull, double-throw configuration with factory-set switch points and hysteresis, the company says. The one-piece, stainless steel sensing element draws from AST's proprietary Krystal Bond technology to facilitate the measurement of pressure in extreme conditions.

With a maximum operating pressure range up to 20,000 PSI, the switch maintains "high performance with zero signal drift due to an extremely thick and robust sensing diaphragm," AST says.