Gravity Industrial Submersible Level Sensor 0-5m

This DFRobot submersible pressure sensor measures the level of liquids from 0 to 5 m via the hydrostatic pressure. The stainless steel probe (IP68) is hung into the tank and outputs a 4 to 20 mA current signal with temperature compensation. An air tube in the cable compensates for the air pressure at the surface. The included Gravity current-to-voltage converter (SEN0262) turns the current signal into a voltage for the analog input of an Arduino. The probe needs its own supply of 12 to 36 V, and the converter runs on 3.3 to 5.5 V.

Important: The supply of the Arduino is not sufficient for the probe. Hang the probe vertically and fixed, away from the inlet. Keep the cable end and the connection point dry and make them waterproof. Do not touch the membrane with sharp objects. After switching on, the readings are most stable after about 30 minutes (DFRobot).

Recommended Accessories:

• 12V DC 4000mA Power Supply AC/DC Adapter 5.5mm/2.1mm Plug
• DC Socket Female Barrel Jack 5.5mm / 2.1mm with Screw Terminals

Features:

• Level measurement 0 to 5 m via pressure, for water, oil and viscous mash (DFRobot)
• 4 to 20 mA output with temperature compensation
• Housing 304 stainless steel, membrane 316L stainless steel, IP68 protection
• 5 m cable with air tube for pressure compensation
• Gravity current-to-voltage converter for Arduino included

Application Examples:

• Water level in cistern, rainwater tank and tank
• Well and groundwater monitoring
• Level in pond, basin and swimming pool
• Irrigation systems and water supply

Documentation:

• DFRobot Wiki KIT0139
• Example code level measurement with Arduino and wiring diagram (DFRobot Wiki)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: KIT0139
• Measuring range: 0 to 5 m (water)
• Accuracy: 0.5 %
• Output: 4 to 20 mA
• Probe operating voltage: 12 to 36 V
• Converter operating voltage: 3.3 to 5.5 V
• Probe type: GL-136 (print)
• Probe wires: red VCC, second wire GND (wiki: black, DFRobot picture: blue), plus air tube
• Converter connections: GND, VCC, signal, I+, I-
• Overload: 300 %
• Service life: 1 × 10^8 pressure cycles (25 °C)
• Material: housing 304 stainless steel, membrane 316L stainless steel
• Protection: IP68
• Cable length: 5 m
• Operating temperature: -20 to 70 °C
• Probe dimensions: 158 × 28 mm diameter
• Weight: 595 g

Scope of Delivery:

• 1× submersible level sensor 0 to 5 m with 5 m cable
• 1× Gravity Analog Current to Voltage Converter for 4 to 20 mA (SEN0262)