There are many methods of pressure measurement, which can generally be divided into four categories according to the different principles of signal conversion: elastic force balance method, gravity balance method, mechanical force balance method and physical property measurement method. Elastic force equilibrium method: Measurement is based on the elastic deformation properties of elastic elements. The elastic element is deformed by the measured pressure, and the elastic force due to the elastic deformation is balanced with the measured pressure. The elastic force can be measured by measuring the displacement of the deformation of the elastic element. Gravity balance method: mainly piston type and liquid column type. The piston pressure gauge is to convert the measured pressure into the mass of the balance weight added to the piston to measure, generally using a glass U-shaped tube or a single tube filled with water or mercury and other liquids to measure small pressure, negative pressure and differential pressure. Examples include liquid column pressure gauges and piston pressure gauges. Mechanical force balance method: its principle is to transform the measured pressure into a concentrated force, balance it with an external force, and obtain the measured pressure by measuring the external force at the time of equilibrium. This approach is structurally complex. Physical property measurement method: The measurement of pressure is based on the principle that certain physical properties of the load cell change under pressure. For example, capacitive, piezoelectric, piezoresistive pressure transmitters, etc. The main application of pressure measuring instruments in industry is pressure transmitters according to the physical measurement method. Most of the pressure transmitters adopt the above-mentioned physical property measurement methods, and the pressure transmitters are mainly composed of pressure-sensitive elements, measuring circuits and process connectors. The pressure signal measured by the pressure transmitter is transmitted to the electronic device, which in turn displays the pressure on the computer, and the pressure is linearly related to the magnitude of the voltage or current. The current or voltage output by the pressure transmitter increases with increasing pressure, so it is possible to accurately measure the pressure to be measured. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi: 400-600-4496!