AST46HA Pressure Transmitter American Sensor Technologies Inc. offers its AST46HA Series of explosion-proof pressure transmitters with extended pressure ranges, enhanced construction materials, and new certifications to withstand harsh conditions present in offshore, marine, deep-well drilling, oil processing, and mining applications. With extended pressure ranges up to 20,000 PSI, the AST46HA addresses the need for a high-pressure, high-cycle pressure transmitter in the drilling of deeper wells. It is constructed of thick diaphragms and silicon strain gauges. In addition to Class 1, Div 1, Groups A, B, C, D approvals that make the transmitters suitable for use in acetylene and hydrogen environments, the AST46HA has Class 2, Div 1, Group E, F and G (dust-ignition-proof) approvals for use in mining, cement and other dusty applications. The AST46HA is also ABS approved for offshore and marine applications. –