Single / Dual Fluxgate Gradiometer System FM256

Single / Dual Fluxgate
Gradiometer System
FM256

The FM256 Fluxgate Gradiometer System is designed as a one man rapid location, mapping and identification system for a wide range of targets, which can be archaeological, environmental, utility services, geological or military in origin. Archaeological targets include fired structures such as kilns, furnaces, hearths and ovens, and structures with an enhanced magnetic susceptibility such as pits, ditches, enclosures, field systems, barrows etc. Other targets include environmental waste, oil drums, pipelines, cables, unexploded ordnance and geological formations.

The FM256 can be operated as a single stand alone gradiometer or as a dual gradiometer system. The dual gradiometer system uses two instruments carried together to double the survey speed or, using interleaving, provide increased survey density (double or quad). Integration with Geoplot software provides excellent data capture, processing, analysis, graphics, interpretation and presentation facilities, allowing you to realise the full potential of your magnetometer data.

Cost effective upgrade routes allow existing FM18 and FM36 users to convert their instruments to FM256 specifications.

FEATURES
Integral data logger, 256000 readings, 15 min. full download.
Integral sample trigger, variable rate : 1m mark beep 0.4s - 3.0s.
Square or rectangular grid sizes : 10 to 100m.
Independent sample and traverse intervals : 1 to 16 samples/m.
Automatic and digital averaging under sample trigger control.
Ranges: +/-20000nT, +/-2000nT, +/-200.0nT.
Logged Resolution : 5nT, 0.5nT, 0.05nT per range.
External compartments for main and memory batteries.
LCD backlight and contrast adjustment for poor light conditions.
Simple one button start/stop control.
NiMH battery, 21 hour operation, 4hr fast charge (LED status).
International voltage and pin sets for charger.
Rugged, reliable construction, excellent sensor stability.

DUAL GRADIOMETER SYSTEM
Flexible : use two instruments together for double speed / increased density surveys or use the two instruments separately at different sites as needed.
Master/slave system accepts FM18/36 or FM256 slave.
Interleaving gives 0.5m or 0.25m traverse intervals.
Simple data merge facility in Geoplot.
Open frame design gives rapid operator turn-around (not system) for zig-zag surveys, avoiding introduction of heading errors.
Integral master start/stop controls on frame.
Collapsible, lightweight, well balanced frame.
Removable legs for use in very overgrown areas.

Specifications


	FM256 FLUXGATE GRADIOMETER FM256 DUAL GRADIOMETER SYSTEM SPECIFICATIONS UPGRADING FROM AN FM18/FM36 TO FM256 SYSTEM RECOMMENDED SYSTEMS AND ACCESSORIES DATA QUALITY - PROCESSING AND ANALYSIS WITH GEOPLOT EXAMPLE SURVEY RESULTS


	Further information is available in our data sheets. These are available on request from Geoscan Research or from our agents or click on PDF Data sheet at top of page.


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