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  SURPLUS-902B-42020 902B Piezo Vacuum Gauge Head • 902B-42020 • 0.1-1000 Torr • 0-10 VDC • DB15 Pin Connector • RS-485 • 1/4" VCR Female The 902B-42020 Absolute Piezo Vacuum Transducer combines the pressure measurement technology of a MEMS-based Piezo sensor with a metal sealed stainless steel 316 diaphragm and integrated electronics. It features a 4 VCR fitting and a RS485 digital communication interface for setup of transducer parameters and to provide real time pressure measurement. In addition, the 902B has a 16 bit 0-10 VDC analog pressure output that is linear at 10 mV/Torr and can be interfaced to external analog equipment for pressure readout or close loop control. It has a male DB15 connector. The 902B provides economical, absolute pressure measurement that is independent of gas type. With a measurement range of 0.1 to 1000 Torr Full Scale, the sensor is ideal for a wide range of applications including semiconductor manufacturing, thin film coatings, freeze-drying, analytical instruments, medical devices, automotive and aerospace. The Series 902B Piezo transducer is based on a silicon piezo resistive pressure sensor that measures absolute vacuum pressure with an accuracy of ±1% of Reading (from 10-1000 Torr). The sensor is robust and resistant to mechanical vibration and g-forces. Furthermore, the sensor technology makes the transducer gas type independent. With only stainless steel 316 exposed to the process gas, the transducer can be used in many demanding applications. The compact design of the 902B significantly reduces the amount of space occupied by the transducer. This is particularly appealing to system designers and allows design of compact systems or equipment. The 902B can be used as a standalone device or together with the PDR900 controller. |
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