DFRobot - Gravity: Industrial Stainless Steel Submersible Pressure Level Sensor(0~5m)

This 0-5m submersible pressure level sensor kit brings industrial liquid-depth measurement to controller-based monitoring projects. Lower the stainless steel probe into the liquid to measure depth through hydrostatic pressure, then use the included Gravity analog current-to-voltage converter to make the 4-20mA signal readable by Arduino or another controller with a suitable analog input. An IP68 probe, 5m cable and built-in temperature compensation support installations in reservoirs, groundwater monitoring and water-supply systems. With the signal converter already included, this kit provides both the submerged sensing component and the interface needed to start integration.

Continuous Depth Measurement Across 0-5m

This pressure level sensor provides a depth reading across the measurement range, supporting projects that need more information than a simple full or empty indication. The sensing chip responds to pressure at the probe's position, while circuit processing and temperature compensation produce a corresponding 4-20mA output. This approach supports tracking changing liquid levels in tanks, basins and reservoirs. The specified accuracy is 0.5%, with final controller readings also depending on the signal-conversion and analog-input chain.

Measuring Range: 0-5m

IP68 Probe with Stainless Steel Construction

This submersible level sensor combines a 304 stainless steel casing with a 316L stainless steel membrane and IP68 protection for direct placement in liquid. The corrosion-resistant, easy-to-clean construction supports water, oil and viscous mash applications described for this sensor. A 5m cable provides reach between the probe and the connection point. Correct installation remains essential: secure the probe away from the inlet, keep the terminal dry and waterproof the connection joint.

IP68

Included Converter for Analog Controller Integration

The included Gravity analog current-to-voltage converter bridges the sensor's industrial 4-20mA output and a controller's voltage-based analog input. This kit removes the need to source that interface separately, making an Arduino liquid-level project easier to assemble. The probe requires a 12-36V supply, while the converter uses 3.3~5.5V power. Follow the documented wiring for both components; the controller's low-voltage supply alone does not meet the probe's power requirement. The product wiki provides an Arduino measurement example.

Notes:

1. Please connect the power supply exactly as the connection instruction.

2. The product is a precision device, so it is not allowed to disassemble and crash the device or make it fall from the high place, what’s more, don’t touch its diaphragm with any sharp objects in case of causing device damage.

3. Power the submersible pressure level sensor up then you can use it. But it can provide more steady output after preheating for 30 minutes. Please turn off the power and stop using if any abnormality is found during use.

4. The liquid level lead should be vertically downward. Please prevent water from entering the terminal, and the joint is required to be waterproof.

5. Place the liquid level probe in water, try to fix it and keep it away from the inlet.

 Connection Diagram

                                               Dimension Diagram                                                         

• 0-5m liquid-depth measurement with 4-20mA output
• Pressure sensing with circuit processing and temperature compensation
• IP68 submersible probe with 304 stainless steel casing and 316L stainless steel membrane
• Gravity analog current-to-voltage converter included for analog controller integration
• 5m cable and 12-36V probe operating voltage

• Cable Length: 5m
• Measuring Range: 0-5m
• Accuracy: 0.5%
• Output Signal: 4-20mA
• Operating Voltage: 12-36V
• Operating Temperature: -20℃-70℃
• Overload Capacity: 300%
• Service Life: 1*10^8 Pressure Circulation (25℃)
• Membrane Material: 316L Stainless Steel
• Casing Material: 304 Stainless Steel
• Protection Class: IP68

• Gravity: Industrial Stainless Steel Submersible Pressure Level Sensor(0~5m) x1
• Gravity: Analog Current to Voltage Converter(for 4~20mA Application) (SEN0262) x1