Input Level Transmitter is designed for continuous measurement of liquid level changes. Input Level Transmitter products use OEM pressure-sensitive sensors with stainless steel isolation diaphragm as the signal measuring element and are automatically tested by computer, and the zero and sensitivity temperatures are compensated for a wide range of temperatures using the laser tuning resistor process. The amplifier circuit is located in the stainless steel housing, which converts the sensor signal into a standard output signal, giving full play to the technical advantages of the input level transmitter. Principle of input level transmitter: When the input level transmitter is put into the measured liquid at a certain depth, the pressure of the measured medium is introduced into the positive pressure chamber of the input level transmitter, and the atmospheric pressure Po on the liquid surface is connected to the negative pressure chamber of the input level transmitter through the cable conduit in order to offset the Po on the positive side of the input level transmitter, so that the measured pressure of the input level transmitter is: ρgh, it is clear that, through the measurement of the pressure P, you can get the Liquid level depth. Input level transmitter facing the liquid surface by the pressure formula: Ρ = ρgh + Po P: input level transmitter facing the liquid surface by the pressure (for ease of understanding, the following collectively referred to as pressure) ρ: density of the measured liquid (1g/cm3 by default during commissioning) g: acceleration of gravity (default commissioning in accordance with 9.8015) Po: atmospheric pressure on the liquid surface h: input level transmitter into the liquid depth Input level transmitter is an extension of the working principle of the pressure transmitter, input level transmitter is based on the height of the liquid of different densities of the pressure generated to achieve accurate measurement and signal transmission. Input level transmitter is widely used in city water supply and sewage treatment petroleum, chemical, power plant, hydrological monitoring, reservoirs, dams, hydropower construction and other fields of liquid level measurement and control. Features of input level transmitter: 1. The input level transmitter adopts diffusion silicon pressure sensitive element and diaphragm isolation technology, which is characterized by high precision, good stability and fast response speed. 2 input level transmitter structure is simple, easy to install, can be directly put into the field liquid medium. 3. The input level transmitter adopts anti-clogging and anti-scaling design, which reduces the frequency of transmitter cleaning. 4. At the same time, the input level transmitter also carries out internal temperature and humidity control processing, which greatly increases the product’s airtightness and waterproofness. 5. The input level transmitter is intrinsically safe and dust intrinsically safe, and can be used in hazardous places related to it. 6. In addition to on-site measurement, the input level transmitter can also be used with remote transmission equipment, alarm switches, etc., with good on-site and integration and complete functions. 7. The input level transmitter has wiring reverse protection, over-voltage protection and current limit protection.