Generally, pressure switches are divided into two types, electronic and mechanical type. For the electronic pressure switch, the front part uses a piezoresistive pressure sensor with an isolated diaphragm as the sensing element, the sensor output signal is amplified by a high accurate and low temperature drift circuit, transferring into A/D convertor and transforming into digital signal. The processed signal controls two relays and then measures and monitors pressure. Mechanical pressure switches are further divided according to the form and construction of the pressure-sensing component.
Applications:
·Power station
·Tap water
·Petroleum
·Chemi-industry
·Engineer and liquid pressure
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