Liquid Level Sensor for Water Level, Oil Level and Mild-corrosive Liquid

The Seeed Liquid Level Sensor is an IP68-rated, industrial-grade sensor for measuring water, oil, and mild-corrosive liquids. Built with stainless steel and a piezoresistive core, it converts liquid height into a voltage signal for data loggers, PLCs, or control systems. Compact, durable, and vibration-resistant, it’s ideal for automation, HVAC, and industrial monitoring.

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The Seeed 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.

The Liquid Level Sensor measures the height of water or other liquid and converts it to the voltage signal. It works with a data logger or other devices that have analogue voltage input ports. The Liquid Level Sensor has a built-in silicon piezoresistive core that features high sensitivity. The internal chip converts the millivolt signal into a standard voltage signal, which can be connected to a computer, a control instrument, or a PLC.

It’s small-size, lightweight and easy to install. With a sealed stainless steel probe, it can work in water, oil, and mild-corrosive environments. 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.

Features

• High-performance: anti-interference and long-term stability
• Robustness: anti-corrosion, durable and stable
• User-friendly: anti-blocking design, easy to clean
• Widely-applicable: 0.5~4.5V transmission output, can work with digital displays, PLC, inverters, recorders and other instruments
• Industry-grade: IP68 rating, durable and waterproof, suitable for outdoor severe environments
• Certifications: FCC, CE, and RoHS

Specifications

Measurement Range	0 ~ 5 meters
Cable Length	5.3 meters
Output Signal	0.5 ~ 4.5V
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	5V 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
Supplier Code	314990619

Resources

• Datasheet

Wiring Diagram

Probe Dimension

Output Voltage

Package Contents

• 1x Liquid Level Sensor