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Instruction Manual Magnetic Locator Schonstedt Instrument Company 100 Edmond Road, Kearneysville, WV 25430 P: (304) 725-1050 www.schonstedt.com schonstedt.inf@spx.com...
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Im po rta nt No tic e Sc ho nste d t b e lie ve s the sta te me nts c o nta ine d he re in to b e a c c ura te a nd re lia b le ; ho we ve r, the ir a c c ura c y, re lia b ility, o r c o mp le te ne ss is no t g ua ra nte e d .
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This creates a signal strength that is larger than zero (which would occur when the field strength is the same at both sensors). The audio response of SPOT is designed so that the frequency of the audio tone increases as the detected signal strength increases. As a result, the frequency of the audio output is higher than the idling frequency (~ 30 Hz), which exists when the signal strength is approximately zero.
Operating Controls The controls on SPOT are designed to be intuitive and require minimal training for effective use. The locator can easily be operated with one hand. G a in Vo lume O N/ O FF Figure 2: SPOT® Membrane Switch ON/OFF: Push this button to turn the unit on or off.
6.0 V, the unit turns off to protect the electronic circuits inside. Replacing the Battery SPOT is powered by one 9-volt disposable battery. The battery compartment is located near the top of the locator, as shown in Figure 3. To remove the battery, simply unscrew the two flat head screws holding the battery door.
Basic Signal Patterns with SPO T When SPOT is positioned directly over a vertical target, the signal strength will peak (audio signal will be at highest frequency, depending on the gain setting). The audio signal also peaks over each end of a horizontal target, as shown in Figure 5.
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After you have detected the presence of a target, hold the locator vertically, slowly move it back and forth in an "X" pattern and listen to the audio response. The audio peak will occur when the locator is directly over a vertical target, or it will occur over the ends of a horizontal target.
Strongly Magnetized Markers A strongly magnetized marker, at or near the surface, provides a weaker indication on both sides of the marker that could be mistaken for the marker. In Figure 8, the heavy line represents the increase and decrease in the audio signal frequency as you move the locator over a marker.
Figure 10: Locating Manhole Covers Figure 11: Locating Water Well Casings SPOT can be used to precisely locate the metal handles or reinforcing bars on septic tank covers at depths of up to 5 feet. Figure12: Signal Pattern Provided by Septic Tank Covers...
Locating and Tracing Barbed Wire You can often trace barbed wire (from old fence lines) buried just beneath the surface. Even if the wire is only a trail of rust, it can still be detected near the surface. Tip the locator a little lower than usual (but not parallel with the ground).
Along the fence, perform the search by slowly moving the locator forward while also moving it to the right and to the left. As you move forward, this technique will allow you to search an area that is several feet wide. Listen for an abrupt drop in the signal (as shown by the null in Figure 15) that will occur when the lower sensor, located 1-5/8 inches from the end of the locator, is directly over the stake.
Locating Cast-Iron Pipes Cast-iron pipes produce the strongest magnetic signals at their joints. Figure 17: Signal Patterns Provided by Cast-Iron Pipes After an initial sweep search identifies the general direction of the pipe, the steel pipe joints or transition points can be more accurately traced by the following procedure: 1.
Figure 18: Signal Patterns Provided by Steel Drums Additional Notes 1. SPOT can detect buried ordnance and discarded weapons. SPOT is a viable tool for use by the military and local/state police departments. 2. People drilling in an area where hazardous materials might be encountered can use SPOT to search the area prior to drilling.
Specifications * Audio Output Frequency increases or decreases with signal strength (gradient field intensity). Range: 30 to 4000 Hz. Low Battery 0.5 sec Audio beep, every 13 seconds, when lower than 6.8V Gain 5 levels: Extra Low (1), Low (2), Medium (3), High (4), Extra High (5) Audio: Progression of audio beeps to correlate with gain setting (one beep for #1, two beeps for # 2, and so on) Volume...
Regulatory Compliance and Declaration of Conformity FCC: ++++ FCC Part 15B, Class B This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
TECHNICAL SUPPORT/SERVICE INFORMATION Page | 21...
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Schonstedt offers technical support and sales support. For any reason, regarding usage and application, please contact our technical support team at 888-367-7014. FOR SERVICE OR REPAIR Please ship unit to: Schonstedt Instrument Company 100 Edmond Road Kearneysville, WV 25430 Attn: Customer Service Dept.
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Prior to a repair being performed by Schonstedt, a cost estimate will be submitted and no work will be completed until authorized by the customer. Batteries are specifically excluded under the warranty and should be addressed to the manufacturer of batteries in question.
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