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Model 6150A/B/C/D/E MEMS In-Place Inclinometer Systems | Discontinued

  • Model 6150D Digital Sensor, Wheelless, Addressable, MEMS In-Place Inclinometer (this product has been discontinued).

The Model 6150 Series MEMS In-Place Inclinometers consist of a string of MEMS (Micro-Electro-Mechanical Sensor) tilt sensors mounted on lengths of stainless steel tubing which are linked together by universal joints. The string of sensors is inserted inside a pipe, or a casing installed in a borehole in the ground, with the sensor cable(s) passing to the surface where they are connected to Terminal Boxes or Dataloggers. Several models, including analog, digital, addressable and wheelless versions, are available allowing for optimal configuration based on application and site specifics.

Limited 6150A/B/C/D/E Series versions are available allowing for the repair and/or expansion of retired in-place inclinometer models previously available. For more information, please contact GEOKON.

The Model 6150A/B/C/D/E Series has been replaced by the Model 6180 Vertical In-Place Inclinometer System.


Standard Range¹
±15° (±54000 arcseconds)
6150A/B/C/D | ±0.02 mm/m (±4 arc seconds)
6150E | ±0.0001° (±0.2 arc seconds)²
Sensor Accuracy³
6150A/B/C/D | ±0.05 mm/m (±10 arc seconds)
Sensor Output
6150A/B | ±4 V @ ±15°
6150C/D | Digital
Shock Survival
6150A/B/C/D | 2000 g
Temperature Range¹
6150A/B/C/D | −20°C to +80°C
6150E | −40 °C to +80 °C
Sensor (L × Ø)
6150A | 219 × 32 mm
6150B/C/D | 362 × 32 mm
6150E | 235 × 32 mm

¹Other ranges available on request.

²All but one in a hundred individual readings would fall within our published tolerance. (Most measuring devices are specified with only a 95% confidence interval, meaning one in twenty readings exceed the stated limit, on average.)

³Established under laboratory conditions.

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.