Groundwater Level Sensors (narrow, 36XS)

The KELLER Series 36XS is a high-accuracy submersible pressure transmitter designed for water level measurement in narrow boreholes, monitoring wells and sounding tubes.

With a diameter of just 16 mm, the 36XS is particularly suited to installations where conventional water level sensors cannot be accommodated. Despite its compact dimensions, the sensor provides high-precision pressure measurement with an accuracy of ±0.05% full scale.

Measurement data can be transmitted using either a 4–20 mA analogue output or RS-485 digital interface, allowing straightforward integration with data loggers, telemetry systems and other monitoring equipment.

Key Features

• Ultra-slim 16 mm diameter

• Ideal for narrow monitoring wells and boreholes

• High accuracy of ±0.05% FS

• Pressure ranges from 0–1 to 0–30 bar

• 4–20 mA analogue output

• RS-485 digital interface

• Suitable for integration with data loggers and telemetry systems

• Enhanced lightning protection as standard

• Designed for long-term submerged water level monitoring

• Swiss manufactured by KELLER Pressure

• Groundwater assessments

• Peatland monitoring and restoration

• Dual pizeo monitoring installation