DeviGyro RG30 Helix

Survey solution for small diameter in-rod surveying

DeviGyro RG30 HELIX

The DeviGyro RG30 Helix is designed for small diameter in-rod surveying, with a 30mm body and adaptable centralizers making it particularly suitable for drilling applications such as slim-rod RC. Providing all the benefits which the innovative DeviGyro technology has to offer, the DeviGyro RG30 Helix is simply the latest purpose-built running gear configuration in the DeviGyro range.

DeviGyro RG30 HELIX
1367 mm / 53.8 in
30 mm
1.2 in
5.9 kg
13 lbs
Weight and lenght without sinker bars
Azimuth accuracy:
Typical positional accuracy:
Inclination accuracy:
Toolface accuracy:
*Calibrated for temperature range -10C to +60C
Pressure (bar/psi)
Temperature range
-20° to +60°C/-4° to 140°F
Compatible Sizes
Centralizer range
30-50mm/1.2-2in ID
Azimuth accuracy
Typical positional accuracy
Inclination accuracy
Tool face accuracy
Azimuth range
Inclination range
-90°− +90°
Survey modes
Continuous or multishot
Survey speed, up to
100 m/min
Effected by magnetics
6h 40min
Data communication
Battery type
1x CR 123a
Battery capacity, continuous use
24 hours
*Calibrated for temperature range -10C to +60C

Handheld device

Android Smartphone
DeviGyro App
Battery capacity, continuous use
15 hours
Battery type
IP rating

The DeviGyro RG30 Helix centralizers automatically adapt to the drill string dimension in use and will fit diameters ranging from approximately 30 to 50mm.

The centralizers offer dual functionality, providing solutions for both the proprietary helix surveying method and the standard non-rotating surveying method.

In addition to the centralizers and pressure barrel the RG30 Helix running gear assembly kit includes a top sub swivel, a bull nose and 4 sinker bars that may be mounted in front and behind the pressure barrel to ensure smooth descent down the drill pipe.

The DeviGyro RG30 Helix can be attached directly to the wireline or used in combination with the DeviRodder, making it the ideal solution for any type of small diameter in-rod surveying.


  • Quick set up time
  • Slim diameter capability
  • Dual mode survey functionality
  • Repeatable precision at any angle
  • Automatically adapting centralizers
  • Automatic, instant At-Rig QA processing
  • High speed, continuous surveying (up to 100m/min)
  • User-friendly, intuitive operating software
  • True wireless – Connects fully assembled
  • Scandinavian made - Robust and reliable
  • Commercially available battery
  • Not affected by magnetics
  • DeviCloud compatible

Application areas

  • In-rod surveying
  • Slim-rod RC Drilling
  • Small diameter Civil Drilling Applications
  • Diamond Core Drilling: A and B-size only
  • Wireline, Pump down or Conventional
  • Pilot holes
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Frequently asked questions about DeviGyro RG30 HELIX

What is provided in the DeviGyro RG30 Helix running gear kit?

The DeviGyro RG30 Helix running gear kit includes a pressure barrel, bull nose, top sub swivel, two RG30 Helix centralizers, four extension/sinker bars and two v-stands.

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What is the purpose of dual functionality centralizers?

The helix survey method provides optimal accuracy in most situations, however in some situations, non-rotating centralizers may be preferred, for instance in vertical holes.

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Is the DeviGyro RG30 Helix suitable for A-size diamond core drilling?

Yes, the DeviGyro RG30 Helix will work in A-size wireline drill string (35-37 mm).

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What are the key differences between DeviGyro RG30 Slimline and DeviGyro RG30 Helix?

The RG30 Slimline is not designed for use with wireline, it is commonly used in combination with a DeviRodder for surveying in short, open hole environments such as drill and blast, where up-holes and horizontal holes are common. Hence it is built using lightweight materials and has a short body.

Though the RG30 Helix is also compatible with the DeviRodder it is specifically designed for in-rod, downhole wireline surveying. Hence it has been built with heavier materials and a longer body, containing a top sub, swivel, bullnose, and centralizers.

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Can we survey vertical holes with the DeviGyro RG30 Helix?

Yes, the advanced DeviGyro technology precisely detects and quantifies any deviation the instrument is subjected to as it traverses the drill hole. Providing highly accurate, repeatable data at any angle, including vertical. It is preferable to set the centralizers to non-rotating mode for vertical holes.

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What length is the RG30 Helix assembly?

Approximately 1.3m when assembled without any of the 4 extension/sinker bars provided in the kit, 1.9m when assembled with 2 extension/sinker bars and 2.5m when assembled with all 4 extension/sinker bars.

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