Directional Sensor

The Directional Sensor is a robust and compact survey instrument which provides highly accurate measurements of Azimuth, Inclination and Tool Face from the well bore. It provides measurements for borehole direction and angle using Tri-axial Flux Gate Magnetometers and Q-Flex type Accelerometer packages respectively. A built in temperature sensor enables appropriate corrections to be made to these measurements. Tool face readings can be obtained from either the magnetometer or the accelerometer packages according to borehole angle and/or operator choice. Local magnetic and gravity field values are recorded for survey quality control purposes.

Measurement Range  Accuracy
Azimuth  0-360º +/-0.5º
Inclination  0-180º +/-0.05º
Tool Face  0-360º +/-0.5º
Magnetic Field  +/-100μT (+/-1000mGauss)  
Nominal  +/-0.15μT (+/-1.5mGauss)  
Temperature  0-200ºC +/-1ºC
Temperature Operating: 0 - 150ºC Survival: -20 - 165ºC
Vibration 20g RMS 30-300 Hz Random, 30g 50-300 Hz Sine
Shock 1000g 0.5ms, half sine



  • Industry Leading Instrument Accuracy
  • Robust and Highly Reliable
  • Sondex Drilling Division proprietary technology, manufactured in the UK
  • Compatible with all Geolink MWD Systems
  • Available in both Standard and Slim-hole sizes


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