Suitable for indoor, outdoor, or applications where mains power is unavailable. Widely applied in petroleum and petrochemical, metallurgy, environmental protection, gas, fire protection, municipal engineering, chemical industry, marine, power, process control, wastewater treatment, emergency rescue monitoring, and other industries.

2. Principle
Based on the principle that the hydrostatic pressure of the measured water is proportional to its height, the pressure sensor converts the hydrostatic pressure into an electrical signal. This signal is then transformed into a standardized electrical output through temperature compensation and linearity correction, enabling precise liquid level detection.
3. Electrical characteristics
Two-wire configuration: One wire connects to the positive power terminal, while the other wire (functioning as the signal line) is routed through the instrument to the negative power terminal
Three-wire configuration: A third wire is incorporated into the two-wire configuration, directly connecting to the negative power terminal
Four-wire configuration: Consists of two power input terminals and two signal output terminals
4. Installation Instructions
4.1. Installation precautions
1. Liquid level sensors should not be operated in environments with excessively high temperatures, over-range conditions, or strong magnetic fields, as these conditions can seriously compromise measurement accuracy and significantly reduce service life
2. When measuring static liquid levels, the liquid level sensor should be submerged to the container bottom without contacting sediment or sludge. For liquids prone to sedimentation, the sensor should be installed with a 10-15 cm clearance from the bottom to prevent clogging
3. Liquid level sensor is typically installed within PVC conduits, steel piping, or other protective sleeves of larger diameter, securely positioned in the water. The housing incorporates strategically perforated apertures at varying elevations to facilitate unrestricted water ingress. Alternatively, a sediment barrier assembly may be integrated at the base to filter silt while mitigating the effects of dynamic pressure and wave interference on measurement integrity
4. The liquid level sensor must be installed in a vertical orientation, with its mounting position away from inlets, outlets, and vibration sources
5. It is strictly prohibited to touch the pressure sensor diaphragm with hard objects
6. Different liquid level transmitter structures should be used to measure different media