Seeed Studio
RS485 Modbus-RTU Liquid Level Sensor
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The Liquid Level Sensor measures the height of the liquid and converts 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 piezo-resistive 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.
Download the specification documents
data sheet
Key Features
- 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
Applications
- Reservoir detection
- Pool pump station
- River monitoring
- Marine monitoring
- Lake monitoring
- Sewage treatment
- Deep well level monitoring
- Tank level monitoring
In what environment does thisSensor operate?
ThisSensor operates in indoor and outdoor environments.
What measurements does this Sensor support?
This device supports the following measurements: Liquid Level
Specifications:
| 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℃ |
| Material |
304 stainless steel shell, 316L stainless steel core, special rubber-insulated cable. |
| IP Rating | IP68 |
| Device Weight | 670g |
| Certifications | CE, FCC, RoHS |
| Adapter | |
| Power Adapter | 5V DC |
| Cable | |
| Cable Length | 5.3 meters |
| Logger | |
| Logger Accuracy | ±0.25% F.S |
| Logger Environmental Rating | IP68 |
| Logger Materials | 304 stainless steel shell & 316L stainless steel core & special rubber-insulated cables |
| Logger Operating Temperature | Compensation Temperature: -10 ~ +70 °C Medium Temperature: -40 ~ +80°C |
| Logger Response Time | 5ms (≤ 90% F.S) |
| Logger Storage Temperature | -40 ~ +85 °C |
| Logger Weight | 670g |