High-temperature Pressure Transmitter

Product Details

Product Overview

For general piezoresistive pressure sensor, the four force-sensing resistors of its sensitive Wheatstone bridge for control and measuring are manufactured using IC technology. The resistors are isolated from one another with PN junction. The highest operating temperature is only 125℃ due to temperature resistant limitation of the PN junction. However, the performance of sensor has greatly been deteriorated after the temperature is above 100℃ because reverse current leakage of the PN junction rises with the exponent of the temperature, which limits the temperature range available for the conventional piezoresistive sensor. Utilization of thick film technology to make force-sensing resistor can expand the operating temperature up to 125℃; utilization of multi-crystalline silicon SOI technology to make force- sensing resistor can expand the operating temperature up to 150℃; utilization of the traditional SOS technology and advanced SOI technology can expand the operating temperature up to 180°C—350°C. Utilization of the latest β–phase high- temperature force -sensing material SiC, combined with SOI technology can expand the operating temperature up to 450℃ ~ 850℃. This series of product is assembled through strict process using internationally advanced sensor, supported with high-precision electronic elements.

Performance Parameters

Product Features

Stainless steel enclosure, with excellent corrosion resistance

Wide pressure measuring range

Wide temperature measuring range, with very small temperature error

Stable working and strong interference immunity

High reliability, dual-diaphragm structure

Small dimensions, light weight, and a variety of types

Reverse polarity, over-voltage and over-current protection

Wide range of measured medium

Ordering Information