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HYM880 4-20mA Hart RS485 Magnetic Liquid Level Transmitter

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HYM880 magnetic liquid level transmitter is composed of stainless-steel probe rod and signal conditioning circuit. Inside the probe rod is a series of precision magnetoresistive chips. The probe rod of the transmitter is fixed on the outside of the main conduit of the magnetic flap level gauge or magnetic float level gauge in the form of a bundle, so that it is in the same magnetic coupling system. When the magnetic float in the main tube moves up and down with the liquid level, the magnetoresistive chip in the probe rod corresponding to the liquid level is moved by the magnetic field in the float, and the changing magnetoresistive signal is converted into a 4-20mADC standard signal through the signal conditioning module. or other signal output. This signal can be easily used with a microcomputer industrial intelligent controller or connected to other secondary instruments to achieve the purposes of display, control, adjustment, and alarm.

This magnetic flap remote transmission liquid level transmitter is widely used in industrial process control, petroleum, chemical industry, metallurgy, and other industries, especially for liquid level measurement and signal output in high temperature, high pressure, corrosive media and other environments.


  • Standard 4~20mADC current signal output.

  • Used with magnetic flap level gauge or magnetic float level gauge.

  • Different from other liquid level transmitters, it is suitable for high temperature and high-pressure occasions.

  • Zero point and full scale are adjustable.

  • Completely isolated from the medium, strong anti-interference, good long-term stability.

  • Various appearance and structure, special requirements can be customized.

Technical Parameters

Measuring range


Measuring medium

Various Liquids

Output signal/Power supply

4~20mA,2-Wire   / Vs= 10~36V

4-20mA+HART,2-wire   / Vs= 12~36V

RS485,4-wire   / Vs=12~36V


10mm (Default)

5mm  (Customized)

20mm (Customized)

Temperature range

Ambient temperature:-20~80℃

Protection grade


Our product philosophy is specialization, customization, and intelligence.

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    Phone : +86-13270442058
    E-mail : info@hjsensor.com
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