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Horizontal In-Place Inclinometer System (MEMS) | Model 6185

  • The Model 6185T double-wheeled sensor (front) includes an integrated end terminator and gets installed first. Subsequent Model 6185 sensors (back) are connected via in-line ball joints, and each sensor contains a thermistor for reading temperatures.
  • Closeup of the Model 6185 in-line ball joints and wheel assembly, which centralizes the sensors in the casing, allows unimpeded relative movement inside the housing, and accommodates any spiraling of the casing.
  • Closeup of four-pin, waterproof cable connector.
  • Various parts of the Model 6185 Horizontal In-Place Inclinometer System.
Model 6185

The Model 6185 Horizontal In-Place Inclinometer System consists of an addressable string of Biaxial MEMS Tilt Sensors within segments of stainless steel tubing, which are manufactured to customer-specified lengths. The segments are interconnected via in-line ball joints, and spring-loaded wheel assemblies allow the sensor string to positively engage in vertically oriented grooves of conventional inclinometer casing.

The tilt sensors are connected to each other by means of a four-wire bus cable and the industry standard Modbus® Remote Terminal Unit (RTU) protocol is used to communicate. Automated monitoring is accomplished using any of the GeoNet Addressable Loggers, 8600 Series Dataloggers, Campbell Scientific Dataloggers or any other device capable of being a Modbus RTU client and having an RS-485 port.


±0.00025° (±0.004 mm/m)
Operating Temperature
−40 °C to +65 °C (−40 °F to +149 °F)
Minimum Sensor Spacing
0.5 m
Sensor Diameter
25.4 mm (1")
Standard Sensor Length³
0.5 m, 1 m, 2 m, 3 m, 2 ft, 5 ft, 10 ft

¹Calibrated Range: ±30°

²99% confidence interval (i.e. 99 out of 100 individual readings fall within this tolerance).

³Custom spacing available upon request.

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.

Modbus® is a registered trademark of SCHNEIDER ELECTRIC USA, INC. All other trademarks are the property of their respective owners.