This low-cost, high-quality OEM pressure sensor was built to address applications with tight space restrictions and requirements for high accuracy, trouble-free operation, and long life. Measuring 0.875 in. in diameter, the AST4100 pressure sensor is ideally suited to function within the tight confines of refrigeration systems, test stands, and data loggers. Built for robust use, each sensor employs a thick one-piece diaphragm (free of internal O-rings, welds, and fill fluids) that offers a strong hermetic seal against the media. Available in both 17-4PH and 316L stainless steel, units offer resistance to media corrosion.