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Product

Marine Gravity meter

Manufacturer

ZLS corp

Group

Ocean survey and exploration > Subbottom and Seismic Equipment

Related

Geological Survey

Catalogue

ZLS DYN FLYER 021018.pdf

Transducer outputs are digitized with little additional analog processing. The ZLS system digitizes input signals 200 times a second. All processing, including filtering, is done digitally. All control-loop algorithms, for both the platform and gravity sensor, are performed digitally by an embedded computer. Eliminating analog circuits enhances reliability and simplifies servicing.
The new sensor eliminates the cross-coupling errors inherent in older beam-type gravity meters by constraining the proof mass to vertical linear motion.
Damper adjustments are no longer required.
The new sensor utilizes liquid damping ​that virtually eliminates the sensitivity to vibration common in air-damped sensors.
Residual imperfection errors, due to minute variations in manufacture of the system are typically three to five times smaller than those for beam type sensors. Unlike beam type meters, imperfection errors are stable with time and do not require regular testing to track changes.
The new design eliminates the “slope error” prevalent in beam meters that causes reading errors with beam position under dynamic conditions.

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