Steel Mill Pressure Sensor Operates in Rugged Environs

July 27, 2006
American Sensor Technologies, a New Jersey-based manufacturer of state-of-the-art, MEMS-based pressure sensing products, introduces the new AST47SM Series Pressure Sensors designed to perform in the rugged environments of the steel and aluminum industry. The AST47SM sensors are a direct plug-in for steel mill applications including rolling mills, pumps as well as coolant systems. Featuring a one-piece sensing element, the AST47SM Series of Pressure Sensors have no silicone oil, welds or O-rings, eliminating the chance of contamination from outside media. A stainless steel housing welded to the sensing element and cable connection withstands system wash downs. The pressure sensors also feature a stress-reduced diaphragm that withstands high-pressure spikes while a special internal restrictor maintains a high frequency response of ~ 1kHz. Units also possess high proof and burst pressure ratings. Operating over a wide temperature of - 40 to 85ºC (-40 to 185ºF), the AST47SM units provide high accuracy of < +0.25% BFSL, with optional < +0.25% BFSL of FS with calibration data. Units are rated for over 100 million pressure cycles and have 100Vm of EMI/RFI to protect against electrical noise. Available in pressure ranges up to 10,000 psi (700 bar), the ASTM47SM Series Pressure Sensors offer outputs of 10mV/V (50mV), 0-5V (3 or 4 wire), 0-10V (3 or 4 wire), 1-5V, 1-6V, 1-10V or 4-20mA (loop) to address different application requirements. Units are available with various cable lengths and pressure ports including a _” BSP male process connection and _” NPT. An optional 6-pin Bendix connection is available for direct integration into existing systems. • Accuracy1- < ± 0.25% BFSL • Stability (1 Year) - ±0.25%FS, typ • Overange Protection- 5X Rated Pressure • Burst Pressure- 10X or 20,000PSI whichever is less • Pressure Cycles- >100 Million • Temperature • Operating- -40 to 85°C (-40 to 185°F) • Storage- -40 to 125°C (-40 to 250°F) • Thermal Limits • Compensated Range- 0 to 55°C (30 to 130°F) • Temp. Comp. Zero- <±1.5% of FS • Temp. Comp. Span- <±1.5% of FS • Other • Shock- 100G, 11 msec, 1/2 sine • Vibration- 20G peak, 20 to 2400 Hz. • EMI/RFI Protection- Yes • Rating- IP-69