Products
Gravity Meter
Gravity Meter (Land / Airborne / Marine)
Micro-g LaCoste, the leading manufacturer of absolute, dynamic and borehole gravity meters, supplies state of the art instruments and survey solutions globally. With our knowledgeable and experienced staff, we are here to assist you with all your gravity requirements.
Land Gravity
A10 Portable Absolute Gravity Meter
The A10 is an absolute gravimeter optimized for fast data acquisition and portability in outdoor applications. The instrument allows operation in harsh field conditions on open outdoor sites in the sun, snow, and wind.
Subcomponents
Specifications
| Input Power | 12-14 DC (vehicle or from lab based 100-240VAC supply –included) |
|---|---|
| Full Load | 25A (300W) |
| Average Load | 16A (200W) |
| Weight | 105kg |
| Accuracy | 10μGal (Absolute) |
| Precision | 10μGal in 10 minutes at a quiet site |
| Operating temp. Range | -18˚C to +38˚C continuous operation |
CG-6 Autograv™ Gravity Meter
The CG-6 Autograv™ is the next generation land gravity meter combining a modern, intuitive user interface with our renowned quartz sensor technology housed in a rugged yet lightweight enclosure. The new CG-6 offers fast, reliable and precise gravity measurements and includes an array of mapping and post processing functionality with our new Lynx LG software conveniently installed on the tablet computer, provided as a standard feature.
STANDARD SYSTEM CONTAINS
AVAILABLE OPTIONS AND ACCESSORIES
Specifications
| Sensor Type | Fused quartz using electrostatic nulling |
|---|---|
| Reading Resolution | 0.1 microGal |
| Standard Deviation | < 5 microGal |
| Operating Range | World-wide (8,000 mGal without resetting) |
| Residual Drift | < 20 microGal/day |
| Uncompensated Drift | < 200 microGal/day |
| Range Of Automatic Tilt Compensation | ±200 arcseconds |
| Tares | Typically < 5 microGal for shocks up to 20 g |
| Automated Corrections | Tide, instrument tilt, temperature, noisy sample filter, seismic noise filter, drift |
| Data Output Rate | User selectable up to 10 Hz |
| GPS Accuracy | Standard < 3 m |
| Touch-free Operation | Handheld Tablet with Bluetooth |
| Battery Capacity | 2 X 6.8 Ah (10.8 V) rechargeable lithium smart batteries. Full day operation at 25 °C (77 °F) |
| Power Consumption | 5.2 Watts at 25 °C (77 °F) |
| Operating Temperature | -40 °C to + 45 °C (-40 °F to 113 °F); Optional high temperature version to +55 °C (131 °F) |
| Digital Data Output | USB and Bluetooth |
| Dimensions | 21.5 cm(H) x21 cm x 24 cm (8.5 in x 8.2 in x 9.4 in) |
| Weight | 5.2 kg (11.5 lbs) including batteries |
FG5-X Absolute Gravity Meter
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
Specifications
| Total Shipping Weight | 150 kg in 6 containers |
|---|---|
| Total Volume | 1.5 m3 |
| Floor Space Requirement | 3 m2 |
| Input Voltage | 110-240 VAC, 50-60 Hz |
| Nominal Power Requirement | ~500 W |
| Accuracy | 2 μGal (observed agreement between FG5 instruments) |
| Precision | 15 μGal/sqrt(Hz) at a quiet site [eg. ~1 μGal in 3.75 minutes, or 0.1 μGal in 6.25 hours] |
| Operating Dynamic Range | World-Wide |
| Operating Temperature Range | 20˚C to 30˚C |
FGL Absolute Gravity Meter
The FG5-L series absolute gravimeter is a simplified version of the FG5 absolute gravimeter optimized for small size, speed of data acquisition, ease of use, portability and price. Many of the subcomponents of the FG5-L are compatible with the FG5 in order to allow an upgrade path to the FG5. This gravimeter offers an attractive trade-off between low price and precision in an instrument that is easy to use in the field.
Specifications
| Total Shipping Weight | 140 kg in 6 containers |
|---|---|
| Total Volume | 1.5 m3 |
| Floor Space Requirement | 3 m2 |
| Input Voltage | 110-240 VAC, 50-60 Hz |
| Nominal Power Requirement | ~500 W |
| Accuracy | 10μGal (Absolute) |
| Precision | 10μGal in 10 minutes at a quiet site |
| Operating Dynamic Range | World-Wide |
| Operating Temperature Range | 20˚C to 30˚C |
gPhoneX Gravity Meter
The Micro-g LaCoste gPhoneX gravity meter uses the Zero-Length Spring™ sensor technology to provide microGal repeatability with very low static drift, which makes it the best suited as a monitoring meter. Whether you are interested in earthquake or volcanic studies, earth tide or reservoir monitoring, the gPhoneX will out perform all others. The gPhoneX can also be used as an ultra sensitive low frequency seismometer for these areas of studies.
UPS Power Test Conditions
Specifications
| Input to UPS System | 110 or 220 VAC |
|---|---|
| Total Shipping Powr | Steady State Load : 100 W Maximum Load : 330 W |
| UPS Uptime in Power Outage | 4 hours |
| Weight | 58kg |
| Resolution | 0.1 μGal |
| System Noise | 0.1 to 0.3 μGal/ Hz |
| Precision | 1 μGal |
| Range | 7000 milliGal uncalibrated (worldwide) |
| Feedback Range | (During Measurement) +/- 100 milliGal |
| Instrument Drift | 1.5 milliGal/month, typically < 500 μGal/month |
Airborne Gravity
TAGS-7 Dynamic Gravity Meter
TAGS-7 represents the latest development in a long line of LaCoste-based airborne gravity systems, stretching back to the first successful airborne gravity flights in 1958 and building on the success of the TAGS System. For over 50 years, LaCoste gravimeters have acquired hundreds of thousands of line kilometers of gravity data during academic, government, and commercial surveys. TAGS-7 blends the latest in GPS and data acquisition technology with the solid foundation of the LaCoste dynamic gravimeter. TAGS-7 is an upgrade to the TAGS-6 gravity meter, and is designed specifically for airborne operations. The system incorporates a time-tested, low-drift, zero-length-spring gravity sensor mounted on a gyro-stabilized gimbal platform. The sensor has a worldwide gravity measuring range (no reset necessary) of 500,000 milliGals.
Specifications
| Component | Variable | Specifications |
| Survey Quality | Repeatability | 0.75 milliGal |
|---|---|---|
| Sensor | Worldwide Range: Dynamic Range: Drift: Temperature Setpoint: |
20,000 milliGal ±500,000 milliGal 3 milliGal per month or less 45° to 65°C |
| Stabilized Platform | Platform Pitch: Platform Roll: Control Period: Control Damping: |
± 25 degrees ± 35 degrees 4 to 4.5 Minutes 0.707 of critical |
| Control System | Recording Rate: Serial Output: Additional I/O: |
20 Hz RS-232 Sensor Temperature |
| Miscellaneous | Operating Temperautre: Storage Temperautre: Power Equipments: Dimensions: |
5° to 50°C -10° to 50°C 75W @ 27°C Nominal, 300W Peak, 80-265VAC, 47 – 63Hz 58.4 x 53.3 x 55.9 cm (not including electronics) |
Marine Gravity
MGS-6 Marine Gravity System
Micro-g LaCoste is proud to announce the next generation of marine based dynamic gravity meters: The Marine Gravity System-6 (MGS-6). It represents the next generation in a long line of LaCoste-based dynamic gravity systems, stretching back to the first successful dynamic gravity meter tests on ships more than 50 years ago. Note though, that the MGS-6 is more than a simple upgrade to the Air-Sea System II (AS-2). The MGS-6 is based on the smaller, lighter, more power-efficient TAGS-6 (airborne) platform, and employs the same full-force feedback sensor. In both systems, the platform control and data acquisition system have been overhauled, resulting in unparalleled data quality.
Specifications
| Component | Variable | Specifications |
| Sensor | Worldwide Range: Drift: Temperature Setpoint: |
Range: ± 500,000 milliGal 3 milliGal per month or less 45° to 65° C |
|---|---|---|
| Stabilized Platform | Platform Pitch: Platform Roll: Control Period: Control Damping: |
± 25 degrees ± 35 degrees 4 to 4.5 Minutes 0.707 of critical |
| System Performance | Dynamic Range: Static Repeatability: Dynamic Repeatability: |
25,000,000 0.02 milliGal in 2 minutes 0.75 milliGal in 2 minutes |
| Control System | Recording Rate: Additional I/O: |
1 Hz Electronics, Sensor Temperature, Sensor Pressure |
| Miscellaneous | Operating Temperautre: Storage Temperautre: Power Inputs (Into UPS): Dimensions: Weight: |
5° to 50°C -10° to 50°C 75 Watts average at 27°C, 300 Watts maximum 61.4 x 55.5 x 72.0 cm (including UPS and built in electronics rack) 68kg (Sensor, Gimbal,and Frame), 101kg (all components). |
