Recognized standard for measuring gravity. The new FG5-X system uses the well established free-fall technique of measuring gravity.
Featuring:
- Extended free-fall chamber length
- Improved Electronics
- Improved reliability
- Redesigned drive system
Patented vertical in-line interferometer
- Built-in collimation optics for verticality alignment
- Drag-free chamber surrounds the free-falling test mass
- Portable standard in Absolute Gravity
Description
Micro-g LaCoste is proud to announce the new state of the art in absolute gravity measurements! The FG5-X is a “follow on” instrument to the “absolute standard” that is the FG5 freefall gravimeter. The FG5-X featrues an improved dropping chamber and an improved electronic interface.
The new FG5-X dropping chamber has the following features and improvements:
- Extended freefall length – 33cm, 260ms – in the same original FG5 droppping chamber height (65% longer in distance, 30% longer in time than a standard FG5).
- Redesigned drive system.
- Counterweighted elevator to reduce mechanical recoil and air gap modulation.
- Improved microprocessor servo controller. Eliminates field tuning
- Increased motor power for better tracking.
- Inline drive system to reduce horizontal accelerations (Coriolis) of test mass
- New test mass design reduces decelerations caused by external magnetic fields
- The new System Interface Module (SIMx) provides smaller, lighter, and more robust electronic control:
- Reduces size of total electronics by two full rack units
- Includes Dropper Controller
- Includes Superspring Controller
- Includes System A/D interface (eliminates need for National Instruments A/D card)
- Optional automatic system leveling control
- Includes integrated, GPS-based rubidium timing system
- USB integration for communication with new g-software
- Provides user feedback if spring is out of range, dropper not in DROP MODE, and remote operation of FG5-X via internet connection.
- Improved microprocessor servo controller. Eliminates field tuning
Upgrade path available for users of original FG5 absolute gravity meters.
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