9 Allaura Blvd, Unit 1,
Aurora, ON,
L4G 3N2
+1(905) 727-8886
GT-2M Marine Gravimeter
The GT-2M marine gravimeter is a world-leader in its class.
For accuracy, resolution and dynamic range it is
superior technology to traditional zero-length spring devices.

GT-2M Marine Gravimeter

The GT-2M marine gravimeter brings proven design and fully automatic operation to marine gravity measurement. Intelligent Platform Control and 4 programmable filters running simultaneously allow the collection of high quality data on vessels of any size through periods of high sea states. Proprietary software provides real-time relative free-air gravity values at a selectable recording rate for continuous data evaluation.

  • Easy installation
  • Rugged construction
  • Low power consumption
  • Automated warm-up and operation
  • Automated calibration
  • Optimum data quality in all sea conditions
  • High quality data in shallow transition zone waters
  • Integrates with on-board GPS
  • Real-time calculation of free-air gravity

Specifications subject to change
Measurement range 10,000 mGal
Dynamic range +/- 1,000 Gal
Sensitivity 0.1 mGal
Resolution 10 microGal
Accuracy at Sea 0.20 mGal
Drift per month < 3.0 mGal
Recording Rate 0.1 hz to 2 hz
Four simultaneous programmable filters ex. settings: 300,450,600,900 sec
Attitude limits
roll +/- 45
pitch +/- 45
Operating temp +10 C to +35 C
operating 150 W at 27Vdc
standby 50 W at 27Vdc
Weight (with base) 153.5 kg
Dimensions console 400 x 400 x 600 mm
Dimensions base 600 x 300 mm

Fig. 1 Free-air marine gravity grid: line spacing 5 km x 15 km; grid size 90 km x 60 km; filter 350 sec; RMS error 0.3 mGal; spatial resolution 480 m. Show rights courtesy PGS