PRODUCT SELECTION

Water & Liquid Level Sensors

Define the liquid, vessel and installation before selecting a method.

RS-LVL-001-01 / Model reference

Manufacturer reference: DFRobot KIT0139. Technical information and project integration support.

Parameter	Published reference
Measurement	Hydrostatic liquid level · Conversion from pressure to depth depends on liquid density
Nominal range	0-5 m · Confirm calibration medium / density before publication
Accuracy	0.5% as published · Accuracy basis and test conditions to confirm
Probe output	4-20 mA · Analog current loop; no native RS485
Probe supply	12-36 V DC · Not the converter board supply

Selection item	What your project needs
Medium	Water, other liquid, contamination, foam or corrosion
Measurement	Level range, resolution and response requirements
Method	Contact / non-contact and installation constraints
Field integration	Power, output, cable length and environmental protection

Send the measurement requirements for model selection and system integration.

Measurement requirement *Performance targetInterface & powerDeployment scale

Requirement	Confirm for the selected model
Device interface	Sensor output and host / acquisition compatibility
MQTT	Native device output, gateway conversion or custom integration
OTA	Firmware scope, compatible devices and recovery requirements