Tianjin Instrument 304 stainless steel pressure transmitte

  The two pressures of the measured medium of the intelligent pressure transmitter are connected to the high and low pressure chambers and act on & Delta; On the isolation diaphragm on both sides of the element (i
e
sensitive element), the filling liquid in the element is transmitted to both sides of the measuring diaphragm through the isolation diaphragm and the element
Capacitive pressure transmitter is a capacitor composed of measuring diaphragm and electrodes on insulating sheets on both sides
When the pressures on both sides are inconsistent, the measuring diaphragm will be displaced, and its displacement is directly proportional to the pressure difference
Therefore, the capacitance on both sides is unequal, which is converted into a signal directly proportional to the pressure through oscillation and demodulation links
The working principle of capacitive pressure transmitter is the same as that of differential pressure transmitter, except that the pressure in low-pressure chamber is atmospheric pressure or vacuum
The A / D converter of the capacitive pressure transmitter converts the current of the demodulator into a digital signal, and its value is used by the microprocessor to determine the input pressure value