LST refrigerant dedicated intelligent liquid level sensor

The LST type liquid level sensor can continuously monitor the refrigerant liquid level in the condenser or evaporator and accurately convert the displacement of liquid level changes into a 4-20mA analog linear standard signal output. This sensor adopts a three-wire working mode and can be combined with any refrigeration unit controller with an input of 4 to 20 mA to form a liquid level control system. In addition, it can also be connected to indicating instruments, recorders, regulators and other instruments, as well as DCS systems and PLC systems, to achieve the measurement, display and control of liquid level.

The real-time monitoring of the refrigerant level by using the liquid level sensor and the electronic expansion valve as the flow control actuator, combined with the refrigeration unit controller to form a closed-loop liquid level control system to control the refrigerant level, has become the standard mode of the refrigeration unit control method. This control method not only has higher stability and a wider control range, but also can easily adjust the appropriate control parameters to ensure the smooth operation of the unit and improve the operational efficiency.

Functional features:

Refrigerant calibration, plug-and-play: The sensor has been precisely calibrated for the refrigerant before leaving the factory, eliminating the need for additional on-site calibration. It can be put into use directly after installation, greatly simplifying the installation process.

2. Integrated design, sturdy and durable: It adopts an integral structure with fully sealed interior, featuring excellent waterproof and shockproof performance, and can operate stably in harsh industrial environments.

3. Flexible split option: It offers an optional split structure suitable for plug-in installation scenarios, facilitating the replacement of the electronic compartment and further enhancing the maintenance convenience of the equipment.

4. Reliable M12 connection method: By adopting the M12 connection method, the reliability and convenience of sensor wiring are ensured, effectively reducing the risk of failure caused by wiring issues.

5. Intelligent temperature compensation: Equipped with an internal temperature sensor, it can automatically compensate for the influence of dielectric constant changes caused by temperature variations on the measurement results, ensuring that the measurement accuracy is not disturbed by environmental temperature fluctuations.

6. Communication interface, intelligent adjustment: Equipped with a communication protocol interface, it supports factory calibration or user adjustment of parameters according to special applications, facilitating system integration and personalized configuration.

7. Corrosion-resistant materials, wide application: The insulation layer and sealing material of the probe are made of Teflon, which has excellent corrosion resistance and is suitable for various chemical medium environments, further expanding the application range of the sensor. 

Basic parameters: