Difference between mechanical pressure switch and electronic pressure switch
Difference between mechanical pressure switch and electronic pressure switch There are two types of pressure switches, mechanical and electronic. Mechanical pressure switch is divided into multiple types, and electronic type is also divided into multiple types. Here we say the difference between the mechanical pressure switch and the new and old electronic pressure switch. Mechanical pressure switch switch working principle is: when the measured pressure exceeds the rated value, the free end of the elastic element has displacement, directly or through the comparison to push the switching element, changing the switching element on and off state, to achieve the purpose of controlling the measured pressure . An "electric contact pressure gauge" is generally used. This is an ordinary tube spring pressure gauge plus two sets of electrical contacts. It is possible to switch on the electrical contacts at a relatively high and low pressure so that the pressure is controlled between the upper and lower limits. This kind of electrical contact has a small capacity and can only open and close the control coil of the contactor. The control position on the pressure switch can be adjusted. The characteristics of this mechanical pressure switch are: cheap, simple to use, but the accuracy is low, the service life is short, the control point setting is cumbersome and the setting is inconvenient. Electronic pressure switch, the principle of its work is: using a pointer pressure sensor to measure the pressure of the medium, and then convert the measured pressure into a digital signal to the programmable logic device PLC to control the upper and lower limit pressure, when the pressure reaches the preset The pressure output voltage drives the motor or other controllable device. This type of pressure switch has many disadvantages. Due to the use of a pointer type pressure sensor, the accuracy is not high and the observability is poor; the entire pressure switch is expensive and the controllability is tedious. The latest technology of electronic pressure switches, using high-precision pressure sensors and temperature compensation technology, combined with micro-processing technology and advanced analog-to-digital converters designed and produced. This pressure switch has a built-in precision pressure sensor, which amplifies the pressure signal through a high-precision instrumentation amplifier, collects and processes data through a high-speed MCU, and uses a real-time LCD or LED digital display pressure to output the relay signal. The upper and lower limit control points can be freely set, stable and reliable. ,High precision. The disadvantage is the high price. Mechanical pressure switches and electronic pressure switches each have their own advantages, which together promote the development of pressure measurement. China Proxy Instrument recommends that users choose according to their own needs. Flower Tape,Green Floral Tape,Green Tape For Flowers,Floral Washi Tape SHANGHAI WELLONG IMPORT AND EXPORT CO., LTD , https://www.chinafloralfoam.com