CG-6 Operation Manual p/n 115370001 Rev A
Chapter 1 Instrument overview
Figure 1-1 The CG-6 Autograv
TM
Gravity Meter
The CG-6 Autograv
TM
is an automated gravity meter that has a worldwide measurement
range of over 8,000 mGals and a reading resolution of 0.0001 mGal. This enables the
user to operate in both, detailed micro-gravity surveys and large scale regional or
geodetic surveys.
Accurate measurements are taken by simply pressing a key, and under most field
conditions it takes under one minute to carry out a reading. Additional measurement
cycles of 60 seconds and 120 seconds can also be selected. The CG-6 Autograv
TM
obtains a reading by processing a continuous series of 0.1 second samples. The reading
is displayed on the LCD screen directly in mGals. The acquired data is stored in a flash
memory and can be downloaded at a later time.
The gravity sensor, control system and batteries are integrated into a single lightweight
instrument housing.
Excellent protection from changes in ambient temperature and atmospheric pressure is
achieved by sealing the CG-6 Autograv
TM
sensing element in a temperature stabilized
sensor chamber. The broad operating temperature range of -40°C to +45°C enables the
operator to use the CG-6 Autograv
TM
in many environments.
Internal tilt sensors constantly supply the CG-6 Autograv
TM
with tilt information in order
to correct in real time measurements taken on unstable ground.
The CG-6 Autograv
TM
console has a set of two leveling arrows, which describe the
direction required to rotate the adjustable leveling screws of the tripod in order to level
the instrument.
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