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Water Level Sensors
LevelPro 6100 Bubbler Water Level Sensor
LevelPro 6100 Bubbler Water Level Sensor

The LevelPro 6100 Advanced Liquid Level Sensor is designed to very accurately measure pressure in gas bubbler systems used for water level determination. Featuring microprocessor controlled, state of the art electronics, the LevelPro 6100 delivers excellent accuracy, precision and stability over a very large (up to 70 meters) range. It offers simultaneous analog and digital (SDI-12) outputs for direct, easy connection to popular input devices, including PLCs, RTUs, and data loggers such as the Neon and Starlog Data Loggers.

The 6100 LevelPro determines water / liquid level by measuring backpressure of a gas bubbler system via a Conoflow sight feed assembly. A low cost plastic tube is submersed in the fluid to be measured and purged with inert gas. The pressure of the ‘head’ of water above the tube orifice is the same as can be measured up at the ‘dry’ end where the pressure is measured and converted to head of liquid. The key advantage of this technique of level measurement is that the electronics are remote (out of the water) from the fluid, ensuring long term reliability and accuracy. For process industry applications where instrumentation cannot be in contact with the liquid, the 6100 can be used remotely from the liquid being measured and features a level to volume conversion for typical container shapes.

LevelPro 6100 Bubbler Water Level Sensor
Conoflow Sight Feed Assembly

The LevelPro is housed in a durable machined plastic enclosure sealed to IP67 and NEMA 6 standards. The multi-line backlit LCD display allows easy configuration of the sensor and shows current readings. The LevelPro is supplied with a 2 meter power, and signal cable, 2 meter pressure input tube and a comprehensive user manual.


• Accuracy better than +/- 0.05% of full scale
• Compact, robust design
• Simultaneous analog or digital data output
• Integrated LCD display and keypad
• Ranges 0 to 16.4 ft or 0 to 229.7 ft (0-5 m or 0-70 m)
• Stage - volume conversion


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