Product overview:

The two kinds of pressures of the measured medium of capacitive pressure transmitter are passed into the high and low pressure chambers, acting on the isolation diaphragms on both sides of the δ element (i.e. sensitive element), and transmitted to both sides of the measuring diaphragm through the spacer and the filling liquid in the element. Capacitive pressure transmitter is a capacitor composed of measuring diaphragm and electrodes on both sides of insulating sheet. When the pressure on both sides is inconsistent, the displacement of the measuring diaphragm is directly proportional to the pressure difference, so the capacitance on both sides is not equal. Through the oscillation and demodulation, the signal is directly proportional to the pressure. The working principle of capacitive pressure transmitter and capacitive absolute pressure transmitter is the same as that of differential pressure transmitter, but the difference is that the pressure of low pressure chamber is atmospheric pressure or vacuum. The A / D converter of capacitive pressure transmitter converts the current of demodulator into digital signal, which is used by microprocessor to determine the input pressure value. The microprocessor controls the operation of the transmitter. In addition, it linearizes the sensor. Reset the measurement range. Engineering unit conversion, damping, square root, sensor fine tuning, diagnosis and digital communication.