2. THEORY OF OPERATION The locator finds ferromagnetic objects by sensing the magnetic field radiated by the object. The locator contains two sensor coil assemblies that are precisely spaced and electronically balanced to achieve a near magnetically-balanced ≠operating condition. In a uniform magnetic field, such as the earth’s field, the two sensor coils maintain a magnetically-balanced status, because both of the coils experience the same magnetic lines of force.
8. SPECIFICATIONS Power: Six “AA” (1 ⁄ volt) batteries Battery life: 100 hours of intermittent operation (alkaline batteries) Output: Powerful magnetic speaker with molded cover to protect from direct contact. LCD Display: Numeric digital, analog Bar-graph, power line indicator and low battery indicator feature Weight: Approximately 2.5 lbs.
3. FEATURES • Rugged high-impact plastic enclosure with aluminum sensor pole • Powerful magnetic speaker with molded cover to protect speaker from direct contact of water and dust • Lightweight, comfortably balanced for easy handling • Six “AA” (1 ⁄ volt) battery operation;...
4. BASIC OPERATION AND DESCRIPTION 4.1 Power On/Off Switches Press “ON” once to activate the locator circuitry. Press again to turn the battery power off. 4.2 Volume and Sensitivity Control Sensitivity Setting: The sensitivity or depth range can be varied using the “UP” and”“Down”...
4.4 LCD Visual Display Several visual display functions, provided for ease of operation, are defined below: Digital Signal Indicator A two digit numeric display shows the signal level as related to the audio ≠signal response being heard from the speaker. At the lowest signal level, when no ferrous metal is present, a small number will be viewed (between “0”...
buried object in search of. The only option is to reduce the sensitivity until the interference from the fence is minimized. However, the locator’s sensitivity to the buried object is also minimized and usually undetectable. The Magna-Trak 202 and its “Erase” feature solves this problem by providing an Erase Button;...
6. FIELD OPERATION The recommended search position is a 45° angle from the earth’s surface. Scan the locator pole from side-to-side in a slow sweeping motion while walking in a steady direction. Maintain a consistent height above the ground Physical "X" Motion Locator's Electrical Response Shown Representation...
7. SIGNAL RESPONSE Figure 7 shows audio and LCD visual signal response to: 1: no object, 2: one small deeper metal target, and 3: a second larger and shallower metal object. The LCD display indicates both the numeric ≠digital and analog bar-graph response as the locator passes over the ground.
7.1 Typical Signal Responses The metal handles on the septic tank cover Signal Response will provide a usable signal to determine the location of the actual cover (Fig. 8). Fig. 8 Large metal objects may cause double Signal Response signals as indicated (Fig.
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