Industrial Liquid Level Sensor MODBUS RS485 Aviation Connector

The Liquid Level Sensor is designed with industry-grade standards, for monitoring water level, oil level, and other mild-corrosive liquid levels. It incorporates stainless steel and insulated rubber, is IP68 rated, suitable for application in severe environments and uses the RS485 Modbus-RTU Protocol.

In stock



Please email sensecap[at]seeed[dot]cc to request any technical support for this product.


  • Strong anti-interference and long-term stability
  • Anti-corrosion  material,  excellent  anti-corrosion  performance, and durable
  • Anti-blocking design, easy to clean
  • Modbus-RTU  RS485  protocol,  it  can  be  used  with a display  device, PLC, inverter, recorder, and other instruments
  • The  shell  is  made  of  stainless  steel  and  durable,  and  with  waterproof cable, safe to use


The liquid level sensor measures the height of the liquid and converting it to the Modbus-RTU protocol. It works with a data logger or other devices that support the RS485 Modbus-RTU protocol.

The liquid level sensor has a built-in high-performance and highly sensitive silicon piezoresistive core. The internal chip converts the sensor's millivolt signal into a standard protocol which can be connected to a computer, control instrument, or PLC.

It's small-size, lightweight, and easy to install. It has a stainless steel sealing structure that can work in a corrosive environment. The sensor has high anti-vibration and anti-impact performance. It can be widely used in process control, aviation, aerospace, automobile, medical equipment, HVAC, and other applications.


  • Reservoir detection
  • Pool pump station
  • River monitoring
  • Marine monitoring
  • Lake monitoring
  • Sewage treatment
  • Deep well level monitoring
  • Tank level monitoring

Application Scenarios

This industrial liquid level sensor can be used in many application scenarios such as pool depth level monitoring, river water level monitoring, marine monitoring, dam and lake water level monitoring, reservoir level monitoring, wastewater level monitoring for sewage treatment, well level monitoring, and liquid level monitoring in tanks, etc.


Measurement Range 0 ~ 5 meters
Cable Length 5.3 meters
Output Signal RS485 Modbus-RTU Protocol
Accuracy ± 0.25%F.S
Zero Temperature Drift ± 0.03%F.S/℃
Sensitivity Temperature Drift ± 0.03%F.S/℃
Long-term Stability ≤0.2%F.S/year
Response Time 5ms( (≤90%F.S)
Measurement Liquid  Slight corrosive liquid (water, edible oil, etc.)
Power Supply 11-30V DC
Overload Capacity 200%F.S
Compensation Temperature -10℃ ~ +70℃
Medium Temperature  -40℃ ~ +80℃
Storage Temperature -40℃ ~ +85℃

304 stainless steel shell,

316L stainless steel core,

special rubber-insulated cable.

IP Rating IP68
Device Weight 670g
Certifications  CE, FCC, RoHS

Technical Details

Wiring Diagram



HSCODE 9026900090




Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account