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The SPOT Locator by Schonstedt, detects the magnetic field of iron and steel objects (ferrous), providing an audio detection signal that peaks in frequency when the locator’s tip is held directly over the target. Designed for one-handed operation, the On/Off-Sensitivity and Volume controls are located on the membrane panel, providing easy access. the design is rugged and reliable.
The SPOT locator by Schonstedt, is a next generation stick locator. Built with engineering and accuracy equal to the Schonstedt GA-52Cx, in a sleek, ultralight-weight package with improved ergonomics. Spot is rated IP54 and comes with a 7-year warranty.
SPOT features 5 levels of sensitivity, optimised to locate a wide variety of ferrous metal objects, ranging from steel manhole covers, through steel pipe joints and survey marker pins, up to a depth of 5 meters.
Theory of Operation: All magnetic locators operate on the same basic principle; two fluxgate magnetometer sensors, securely mounted inside a rigid sensor support tube, measure the local magnetic field.
The two-magnetometer sensors are vector sensors, mounted 20" apart and each measures the average magnetic field component along their sensitive axis, i.e. the magnetic field component along the longitudinal axis of the sensor tube.
For a magnetic locator to work properly, the magnetometer sensors are aligned opposing so that the magnetic field measured by one sensor is the negative of the magnetic field measured by the other. The locator then sums the output of the two sensors. By summing the two output signals, you cancel any field common to both sensors, such as the Earth's Magnetic Field, and leave only the differential magnetic field.
The differential magnetic field, the magnetic field detected by one sensor and not the other, is the magnetic field of interest and hopefully represents the magnetic field of your target and not the field of your pocketknife, watch or the steel arch support in your shoes. The drawing on the left shows the construction of a typical magnetic locator and the location of the two sensing elements.
Field Operation: Good instrument performance goes hand-in-hand with proper operation. When searching for survey benchmarks or underground ferrous targets, the magnetic locator should be held in the vertical or near vertical position. In this position the instrument audio output is facing the operator and the controls are readily accessible. The picture at the top of this page shows how to hold the instrument for optimum operation.
To pinpoint your target, rotate the instrument to the vertical and use and "X" or crossing pattern. The audio output will peak directly over your target.
FEATURES:
- Recessed controls to prevent physical damage during shipping and field use
- Comes with a carry case
- Rugged design
- Sensitivity and volume controls
SPECIFICATIONS:
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Detection Type: Magnetic Field (steel/iron)
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Depth Capability: up to 5m
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Audio: 30 to 4000 Hz, frequency increases/decreases with signal strength
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Volume: min, max, mute
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Visual: No
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Gain/Sensitivity: Yes, 5 settings
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Battery: 9v Alkaline
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Battery Life: Up to 24 hours
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Water resistance: IP54 overall, waterproof up to 58cm from bottom tip
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Weight: 0.9kg
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Warranty: 7 years
