Runyi intelligent capacitive pressure/differential pressure transmitter

Runyi intelligent capacitive pressure/differential pressure transmitterTwo types of pressure suitable for the measured medium are introduced 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 isolation diaphragms and the filling liquid inside the element. A capacitive pressure transmitter is composed of a measuring diaphragm and electrodes on both sides of the insulating film, each forming a capacitor. When the pressure on both sides is not consistent, it causes displacement of the measuring diaphragm, which is proportional to the pressure difference. Therefore, the capacitance on both sides is unequal. Through oscillation and demodulation, it is converted into a signal proportional to the pressure. The working principle of capacitive pressure transmitters and capacitive absolute pressure transmitters is the same as that of differential pressure transmitters, except that the pressure in the 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, which is used by the microprocessor to determine the input pressure value. The microprocessor controls the operation of the transmitter. Additionally, it linearizes the sensor. Reset the measurement range. Engineering unit conversion, damping, square root, sensor fine-tuning and other calculations, as well as diagnosis and digital communication.

Runyi Intelligent Capacitive Pressure/Differential Pressure Transmitter - Product Advantages

Digital accuracy:+(-) 0.075%

Stability: 0.075% for 60 months

Range ratio: 100:1

Measurement rate: 0.2S

Compact (2.4kg) all stainless steel flange, easy to install

Process connection is compatible with other products to achieve measurement

Standard 4-20m+HART

Support upgrading to fieldbus and field control based technologies