gradiometer

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gradiometer

[‚grād·ē′äm·əd·ər]
(engineering)
Any instrument that measures the gradient of some physical quantity, such as certain types of magnetometers which are designed to measure the gradient of magnetic field, or the Eötövs torsion balance and related instruments which measure the gradient of gravitational field.
References in periodicals archive ?
In contrast, electromechanical gradiometers require periodic calibration because their components are vulnerable to temperature change and other influences.
Ultimately, the quantum-mechanical gradiometer should achieve a 10-fold to 100-fold edge in sensitivity over electromechanical versions, Kasevich says.
In the present configuration our unshielded laboratory for interventional clinical electrophysiology is equipped with a 36-channel mapping system (CardioMag Imaging Inc, Schenectady, NY), based on DC-SQUID sensors coupled to second-order axial gradiometers (pick-up coil 19 mm and 55-70 mm baselines), with an intrinsic sensitivity of 20 fT/[square root of Hz] in the frequency range of clinical interest (47).
Comparative high resolution caesium vapour and fluxgate gradiometer survey at a range of archaeological sites in England.
Most of the circle (Figure 1) was therefore surveyed with the Scintrex instrument during 22-23 October using the gradiometer configuration and a sample interval of 1.
Tenders are invited for: Study of a cai gravity gradiometer sensor and mission concept
In 2004 the instrument used was a Geoscan FM256 single-sensor gradiometer; in 2005 a Bartington 601 dual-sensor gradiometer with two fixed sensors 1m apart was used.
That's why he and his colleagues sought permission from the American Battle Monuments Commission to investigate the site with radar carts, metal detectors, and gradiometers.
Total field magnetic prospection: are vertical gradiometer measurements preferable to single sensor survey?
Workshop sessions were also included to better understand some of the widely used survey equipments such as underwater gyros, magnetometers & gradiometers, side scan sonars & sub bottom profilers, tide gauges, wave sensors and meteorological & water quality sensors.
Tenders are invited for Supply of squid gradiometers.
Cross-Component Superconducting Gravity Gradiometer