A new commercially viable gravity sensor has finally arrived thanks to advancements in micro-electro-mechanical systems (MEMS) technology. Terraplus is pleased to introduce the GAIA-Field Gravimeter. This compact, rugged, and highly sensitive unit will enable faster, more cost-effective, and non-invasive subsurface analysis, unlocking new opportunities in exploration, infrastructure, security, and environmental monitoring.

The GAIA-Field incorporates a Vibrating Beam Accelerometer (VBA), a type of MEMS sensor which uses high-performance inertial sensors that measure acceleration by detecting changes in the resonant frequency of micro-machined silicon beams under stress. Unlike capacitive MEMS that measure displacement, VBA MEMS (a type of resonant MEMS) offer superior stability, higher resolution, and a wider dynamic range.

The MEMS sensor is packaged in a highly robust, three stage, thermal controlled, vacuum sealed gimbal which includes a tilt sensor also referred to as the GAIA-Core, minimizing any effects from shock and changes in pressure or temperature.

Designed for gravity measurement with a resolution of at least 0.01 μGal and with a <5 μGal standard deviation at 180s, the GAIA-Field finally solves the need for a low-cost, portable, scalable, and reliable sensing method with the fitted internal gimbal and tilt sensor. During each measurement the sensor is adjusted to gravity maximum and the tilt is continuously monitored and displayed during data acquisition. This ensures that data is collected within the allowable tilt range and enables real-time correction of any remaining tilt effects.

Field measurements are taken by accessing a smart interface through a WiFi connected control unit such as a computer, phone, or tablet using the GAIA-Field web interface. The sensor can be configured to acquire repeated readings, depending on data requirements. The data is automatically stored and can be downloaded later for further use. The instrument is compact with the sensor, electronics, batteries, and other components integrated into a single housing. Two Li-ion rechargeable batteries (one for use and the other as a back-up) provide sufficient power to operate the instrument throughout a normal survey day with a minimum of 20 hours of continuous operation.

Providing a practical and cost-effective solution, the GAIA-Field Gravimeter serves as a bridge between traditional mechanical gravimeters and the emerging potential of larger, high-cost quantum gravimetry.

To learn more about how the GAIA-Field can support your operations, contact us today. Terraplus offers both sales and rental options – reach out to our team to explore the best solution for you.