A brief introduction to the pressure transmitter The pressure transmitter is an instrument that transmits the pressure value to the control room or display meter based on the pressure measurement.A sensor commonly used in industrial practice, which is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical, oil wells, electric power, ships, machine tools, pipelines, etc. industry.The pressure transmitter is used to measure the liquid level, density and pressure of liquid, gas or steam, and then convert the pressure signal into a 4 ~ 20mA DC signal output.Pressure transmitters mainly include capacitive pressure transmitters, diffused silicon pressure transmitters, ceramic pressure transmitters, strain gauge pressure transmitters, etc.
Ultrasonic liquid level gauge is a non-contact continuous liquid level measuring instrument controlled by microprocessor.Simple installation, convenient measurement, not affected by liquid viscosity and density.It is widely used in liquid level measurement due to its absence of mechanical moving parts, higher reliability and less maintenance.However, the measurement accuracy is relatively low, and there is a blind area in the measurement, so it cannot be measured in a pressure vessel, nor can it be used to measure volatile media.It is precisely because of the limitations of the ultrasonic level gauge itself that if no attention is paid during use, some failures are prone to occur.1. Measuring principle of ultrasonic liquid level gauge In the measurement of ultrasonic liquid level gauge, the ultrasonic pulse is sent by the sensor (transducer), and after being reflected by the surface of the object, it is received by the same sensor (transducer) and converted into an electrical signal .
What is a liquid level gauge: The height of the liquid medium in the container is called the liquid level, and the instrument for measuring the liquid level is called a liquid level gauge.The liquid level gauge is a kind of level instrument.The good structure and installation method of the level gauge can be applied to high temperature, high pressure, strong corrosion, easy crystallization, anti-blocking, anti-freezing and solid powdery and granular materials.It can measure the liquid level of strong corrosive medium, the liquid level of high temperature medium, and the liquid level of sealed container, which has nothing to do with the viscosity, density and working pressure of the medium.First, the selection of radar level gauges All kinds of liquid level instruments have their own characteristics and advantages.