The pressure transmitter in the general sense consists of three parts: a load cell sensor (also called a pressure sensor), a measurement circuit, and a process connection. It can convert the physical pressure parameters, such as gas and liquid, sensed by the load cell sensors into standard electrical signals (such as 4-20mADC, etc.) to provide secondary instruments such as indicator alarms, recorders, and regulators for measurement and indication. And process adjustments.
Pressure transmitter can be divided into general pressure transmitter (0.001MPa ~ 20MPa) and micro differential pressure transmitter (0 ~ 1.5kPa) according to the pressure measurement range, negative pressure transmitter three pressure transmitters, pressure sensors The main role of the pressure signal transmitted to the electronic equipment, and then the computer shows the principle of pressure is: the hydraulic pressure of the pressure signal into a current (4-20mA) such an electronic signal pressure and voltage or current size is linear , is generally proportional to the relationship so that the voltage or current output from the transmitter increases with pressure, which results in a relationship between pressure and voltage or current. The two pressures of the measured medium of the pressure transmitter are high. , Low pressure chamber, low pressure chamber pressure using atmospheric pressure or vacuum, the role of the delta element (ie, sensitive elements) on both sides of the isolation diaphragm, through the spacer and the filling liquid within the component to the measurement diaphragm on both sides. The pressure transmitter consists of a capacitor formed by the measuring diaphragm and the electrodes on both sides of the insulating sheet. When the pressures on both sides are inconsistent, the measuring diaphragm is displaced, and the displacement is proportional to the pressure difference. Therefore, the capacitance on both sides is not equal, and the signal is proportional to the pressure through the oscillation and demodulation steps.
Pressure transmitter can be divided into general pressure transmitter (0.001MPa ~ 20MPa) and micro differential pressure transmitter (0 ~ 1.5kPa) according to the pressure measurement range, negative pressure transmitter three pressure transmitters, pressure sensors The main role of the pressure signal transmitted to the electronic equipment, and then the computer shows the principle of pressure is: the hydraulic pressure of the pressure signal into a current (4-20mA) such an electronic signal pressure and voltage or current size is linear , is generally proportional to the relationship so that the voltage or current output from the transmitter increases with pressure, which results in a relationship between pressure and voltage or current. The two pressures of the measured medium of the pressure transmitter are high. , Low pressure chamber, low pressure chamber pressure using atmospheric pressure or vacuum, the role of the delta element (ie, sensitive elements) on both sides of the isolation diaphragm, through the spacer and the filling liquid within the component to the measurement diaphragm on both sides. The pressure transmitter consists of a capacitor formed by the measuring diaphragm and the electrodes on both sides of the insulating sheet. When the pressures on both sides are inconsistent, the measuring diaphragm is displaced, and the displacement is proportional to the pressure difference. Therefore, the capacitance on both sides is not equal, and the signal is proportional to the pressure through the oscillation and demodulation steps.
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