Level sensor can also be called level transmitter, water level sensor, liquid level sensor, etc. It is a device that can convert the detected level signal into a standard signal (4-20mA, 0-20mA, 1-5V, 0-5V, 0-10V). Level sensors can add the display and remote transmission functions. According to the measurement method, the level sensor can be divided into contact level sensor and non-contact level sensor. The contact liquid level sensor is based on the principle: The static pressure of the liquid is proportional to the height of the liquid. It uses advanced isolated diffused silicon sensitive elements to convert the static pressure into an electrical signal, and then converted into standard signal after temperature compensated and linearly corrected. The commonly used types are submersible level sensor, float level sensor, magnetostrictive level sensor, etc. They are mainly used to measure the water level or liquid level. The non-contact level sensor mainly includes the ultrasonic level sensor and the radar level sensor. They are new type sensors developed based on the characteristics of ultrasonic waves or radar. They have higher accuracy and a wider range of applications. They can not only measure the liquid level inside the tank, even the level of solid raw materials or mixed media, but also be used in water level monitoring systems in complex environments such as river, lake and sea.
Submersible level sensor adopts 304 stainless steel housing and waterproof cable, can be put in water/oil/fuel tank or reservoir directly for liquid level measurement. The measuring range can be 0-1m/0-3m/0-5m/0-10m ~ 0-200m. Liquid level sensor has optional accuracy 0.5%FS or 0.3%FS, output signal 4-20mA/0-5V/RS485, power supply DC 24V/12V. The cable type and connection type are also customizable.
High temperature level sensor adopts separated structure and consist of 316L stainless steel gas collector, 316L stainless steel capillary tube and protection head. Water/oil/fuel tank level sensor can be used in high temperature (-40~+150℃/ -40~302℉) or corrosive liquid. The measuring range can be 0-1m/0-3m/0-5m/0-7m/0-10m/0-12m ~ 0-20m. High temperature liquid level sensor has optional output signal 0-20mA/4-20mA/0-5V/1-5V/0-10V, optional accuracy 0.5%FS or 0.3%FS and power supply DC 24V/12V.
Ultrasonic level sensor with LED display adopts waterproof shell and circular connector. The internal ultrasonic transducer and receiving transducer has high resolution and fast response time. Ultrasonic level sensor can be used for non-contact liquid/solid/powder tank level measurement. The measuring medium includes water, fuel, oil, metal, etc. The measuring range can be 0.1-0.5m/ 0.15-1m/ 0.2-2m/ 0.3-3m/ 0.4-5m/ 0.5-6m.
Ultrasonic level sensor has integrated structure and mainly consists of LCD display, ultrasonic probe and waterproof connector. Ultrasonic level sensor can be used for non-contact level measurement of various medium, such as liquid (water/fuel/oil), solid (metal or nonmetal), or powder (chemical materials), etc. The measuring range can be from 0-5m, 0-10m, 0-15m, 0-20m to 0-60m. The output signal can be 4-20mA or RS485/232. Ultrasonic level sensor also has optional power supply DC 24V or AC 220/50Hz.
Ultrasonic level sensor has high accuracy 0.3%FS and measuring range 0-5m, 0-10m, 0-15m to 0-40m. It also adopts integrated structure and mainly consists of OLED display, waterproof connectors and ultrasonic probe. Ultrasonic level sensor using advanced non-contact ultrasonic measurement technology can be used for liquid/solid/powder level of tapered/spherical tank, tapered feed outlet tank, sewage tank, river, lake, etc. It has optional output signal 4-20mA, 0-5V/1-5V/0-10V, RS485/232, HART, 2 relays or 3 NPN, optional power supply DC 12-24V, AC 220V, DC 18-28V or built-in battery.
Rader water level sensor using advanced non-contact radar measurement technology has measuring range from 0-10m, 0-30m, 0-50m to 0-70m, optional output signal 4-20mA, HART, RS485/232 and optional power supply DC 12-24V, AC 220V. Rader level transmitter consists of protection head with LCD display, waterproof connectors, internal radar antenna, horn and installation accessory, can be used for measuring liquid level of reservoir/ river/ lake/ water tank.