Measurement and control of pressure (wire technology)

The development of sensors and pressure transmitters is one of the basic technical and technological activities of the company. Already more than fifteen years of pressure sensors manufactured by NPP INTOR, operated on hundreds of enterprises in Russia and CIS. Over the years, developed a whole range of different purpose sensors and pressure transducers: it is specialized for housing and utilities, increased reliability for the oil and gas industry, common industrial, radar measurement systems, and many others.
Depending on destination, metrological and performance characteristics of sensors used in sensor based on piezoresistive sensing element silicon-on-Silicon Thin-film or silicon-on-sapphire. External (measured) pressure causes deformation of the membrane, which leads to imbalance of the bridge. Value generated by the voltage mismatch (useful signal) is directly proportional to the applied pressure. Pressure from the opposite side of the membrane is a reference and determines the type of sensor. Almost all gauges, produced by the enterprise are normalized with Temperature compensated output signal. Sensors with temperature compensation and a normalized output signal, except for temperature compensation circuits and offset calibration, are equipped with the scheme of linearization of the transfer characteristics and the electronic converter. Electronic converter forms one of the standard types of output:
· 2-or 3-wire unified current signal: 4-20 or 0-5 or 0-20 mA at a supply voltage Upow = 9-35 V;
· Radio signal at a carrier frequency of 433.92 MHz.
Type of the medium and its temperature impose additional requirements for the design and circuitry of the sensor.
The range of devices offers a wide range of sensors, transducers, relays, and auxiliary equipment:
· Absolute pressure sensor for measuring a variety of environments, including liquids, gases and corrosive;
· Pressure sensors of different design and purpose for use in various industries;
· Differential pressure sensors used in automatic control, regulation and process control;
· Pressure switches for various purposes, including for use in harsh environments in mining enterprises;
· Specialized measuring telecommunication systems for field testing magistalnyh pipelines, hydraulic systems, agricultural and construction machinery;
· Sensors for hydrostatic pressure of housing and communal services obescheschivayuschie parameters of water-control network.