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Polaroid
Sensors for Hydrology

Gealog Water Level Sensor

Gealog Water Level Sensors

Measurement of water level and water temperature. Installation in pipes with diameters from 2 inch onwards. The water level is measured by a pressure probe, the water temperature by an integrated NTC-temperature sensor.

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Bubble Water Level Sensor LPN8/1

Bubble Water Level Sensor LPN8/1

The Bubble Water Level Sensor LPN8/1 has an internal compact air pressure generator. A low flow of air is led through a Pressure Pick-Up Unit into the water (bubble by bubble). The required air pressure is measured by a pressure sensor.

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Gealog Water Level Sensor 60 m

Gealog Water Level Sensor 60 m

Measurement of water level by the radar principle. A method without physical contact between the media (water) and the measuring instrument. It is proper for being installed onto bridges or similar constructions. The special parabolic antenna allows a measuring range of 60 meters.

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Conductivity Probe TetraCon 325

Conductivity Probe TetraCon 325

4-Electrode conductivity-cell for operation with Gealog measuring interfaces extern and intern.

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Gealog Shaft Encoder

Gealog Shaft Encoder

Measurement of water level by shaft encoder with floater unit. The Gealog Shaft Encoder doesn't use the problematic potentiometric method but an innovative, completely digital method of operation.

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Gealog Radar Water Level Sensor 20 m

Gealog Radar Water Level Sensor 20 m

Measurement of water level by the radar principle. A method without physical contact between the media (water) and the measuring instrument. It is proper for being installed onto bridges or similar constructions.

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Gealog Water Temperature Sensor RS485

Gealog Water Temperature Sensor RS485

The Gealog Water Temperature Sensor RS485 is another member of the family of Gealog sensors with direct Gealog RS485-Fieldbus interface. Thus, the sensor can be connected directly to the RS485-fieldbus of Gealog Dataloggers.

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Gealog Turbidity Sensor

Gealog Turbidity Sensor

Turbidity sensor using the scattered light method (ISO 7027, DIN 38404); measuring range 0 ... 1000 NTU (Nephelometric Turbidity Units); with integrated wiper for cleaning of the lense.

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