The DE45_LCD is a multi-functional switching unit with an optional transmitter output. It is suitable for measuring overpressure, underpressure and differential pressure in gaseous media. The device is based on a piezo-resistive sensor element that is suitable for measuring overpressure, underpressure and differential pressure. The pressures to be compared directly act on a silicon diaphragm equipped with piezoresistive resistors. When the pressure is equal, the measuring diaphragm is in its idle state. In the event of differential pressure, the diaphragm is moved toward the lower pressure which changes the resistance of the attached resistors. This change is evaluated by the device's electronics and transformed into the display, switch contacts or an optional output signal. The optional output signal can be dampened, spread, inverted and transformed via a table function even if it is non-linear.
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