3DM-DH3 Down-hole Industrial Inertial Sensor, Rugged Package

The 3DM®-DH3 is a downhole orientation sensor and datalogger. It incorporates acceleration sensors, magnetic field sensors, and temperature sensors, together with an on-board microprocessor, embedded software algorithm, non-volatile memory for configuration, flash datalogging memory, and serial communication interface. Its form-factor, rated temperature range and power supply requirements are optimized for downhole applications.

The 3DM-DH3 provides accurate drill path measurements including Inclination, Azimuth, GTF, MTF, Dip Angle, sensor temperatures, G-TOT and H-TOT.
Where to Buy?
U.S. International OEM
List Price:



  • A/D resolution 24 bits accelerometer; 16 bits magnetometer
  • Angle resolution 0.02˚
  • Accuracy ± 0.2˚ inclination ± 0.5˚ azimuth
  • Angle measurement repeatability 0.1°


  • Output data rates up to 8Hz
  • Output inclination, azimuth, GTF, MTF, Dip Angle, G-TOT, H-TOT
  • Datalogging capacity up to 32,768 data records


  • CNC Anodized Aluminum
  • Precision alignment features
  • Highly compact and low profile
    • 177.0 mm x 21.0mm diameter
    • 91.0 grams
  • RS422
  • –40 to +125 °C operating temperature range

Use Cases

Down Hole Orientation

Designed specifically for down-hole multi-shot measurement applications

Direct output of drill-path measurements

Industry-exclusive mechanical isolation provides stable performance under shock and vibration

Fully calibrated and temperature compensated guarantees stable performance in typical drilling environments (-40° to +125°C)

Onboard datalogging storage for over 32,000 records facilitates down-hole surveying

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