Schonstedt GA-92 XTd Instruction Manual Download | Manualshive

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PARTS

DIAGRAM

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Summary of Contents for GA-92 XTd

Page 1: ...of over sixty years experience in producing the world s finest flux gate magnetometers and magnetic detectors for aerospace military and civilian applications The GA 92XTd incorporates the knowledge obtained from manufacturing under the most rigid quality control standards The heart of the GA 92XTd is its patented Schonstedt HeliFlux magnetic field sensors These sensors acknowledged to be the worl...

Page 2: ...rbed Wire 13 Searching Areas along a Chain Link Fence 14 Locating Valve Boxes 14 Locating Cast Iron Pipes 15 Locating Steel Drums 15 Locating Ordnance and Weapons 16 Other Notes 17 SECTION VII SPECIFICATIONS 18 SECTION VIII TECHNICAL SUPPORT 18 SECTION IX WARRANTY SERVICE INFORMATION 19 SECTION X PARTS DIAGRAM 20 Important Notice Schonstedt believes the statements contained herein to be accurate a...

Page 3: ... additional information to help you pinpoint a target and determine its orientation Figure 1 illustrates an application of the GA 92XTd locator in which it is used to detect an iron marker used for property line identification As shown the magnetic field of the iron marker is stronger at sensor A than it is at sensor B This creates a signal strength that is larger than zero which would occur when ...

Page 4: ...s material is present This can be avoided by 1 decreasing the gain 2 operating the unit in the extended position or 3 using a lithium battery The GA 92XTd has an internal detent mechanism to keep the unit in either the fully extended open or fully retracted closed position To extend the unit grasp the looped end of the locator and pull until the shaft locks into place To return the unit to the clo...

Page 5: ...ton a third time MUTES the volume Additional pushes of this button cycle the volume through HIGH MEDIUM MUTE OFF To turn the unit off push this button GAIN The sensitivity of the unit can be increased to detect smaller objects at greater depths or decreased to detect larger objects at smaller depths by adjusting the gain up or down pushing the UP or DOWN arrow buttons Figure 3 GA 92XTd Face Plate ...

Page 6: ...k This could be temporary and all segments will change to black as the temperature increases Figure 5 Battery Voltage Status Indicators Signal Strength and Polarity Indicator The signal strength defined as the difference or delta Δ between the magnetic field detected at the top and bottom sensors is shown as a numerical indication in mG milligauss units is preceded by the polarity of the signal or...

Page 7: ...ay be used but they will produce sound in only one ear When the headphones are plugged in the speaker sound will be muted but the ON Volume button still controls the volume of the headphones Figure 7 Headphones Headphone Jack Plug A Headphone Jack Plug has been included with this product It is recommended that the plug remain inserted into the jack any time that headphones are not in use This aids...

Page 8: ...ove the battery tilt the unit so that the handle is pointing down and the battery will slide out When replacing the battery look at the outside of the battery door for the proper battery orientation As a safety measure the unit will not turn on if the battery is not inserted correctly You should never have to force the battery door closed If the battery does not seem to be going in all the way rem...

Page 9: ...terial To obtain a maximum coverage area sweep the locator from side to side When the locator comes within range of an iron object the signal strength will peak the frequency of the audio signal will peak the bar graph will expand in the positive or negative direction and the digital readout will peak This is shown in Figure 11 Figure 10 Searching with the Locator Figure 11 Illustration of Visual ...

Page 10: ...d Horizontal Targets After you have detected the presence of a target hold the locator vertically and slowly move it back and forth in an X pattern while listening to the audio response and observing the bar graph indicator For a given gain setting the number of bars will be greatest when the locator is directly over a vertical target or the ends of a horizontal target The X pattern as shown in Fi...

Page 11: ...d decrease in the audio and bar graph indications as you move the locator over a marker Between points A and B the signals increase slightly and then decrease Just beyond B the signals increase rapidly peak directly over the marker and then decrease at point C From C to D the signals increase and decrease again Therefore if you do not move the locator completely across the marker you might assume ...

Page 12: ...d produces a positive output no matter which end of the stake is driven into the ground The other type of field is the permanent magnetization that is fixed to the pin For maximum detection the stake should be driven into the ground such that the permanent magnetization is in the same direction as the induced magnetization Locating Manholes Septic Tanks and Well Casings The magnetic field is stron...

Page 13: ...ten 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 Figure 20 Tracing Barbed Wire Examine trees for bench marks and bits of embedded barbed wire Hold the locator parallel with the direction of the wire Figure 21 Tracing...

Page 14: ...move forward this technique allows you to search an area several feet wide Listen for an abrupt drop in the signal as shown by the null in Figure 23 that will occur when the lower sensor located 1 1 2 inches from the end of the locator is directly over the stake Any variation in the position of the locator will produce an abrupt rise in the frequency of the signal Figure 23 Abrupt Drop of Signal w...

Page 15: ...y 1 to 1 1 2 feet above the surface 3 Walk without turning or tilting the locator 4 Mark the locations where the maximum signal levels occur 5 Return to an area of maximum signal strength and hold the locator several inches above the surface The sensitivity will probably have to be reduced during this second pass Four inch pipes can be located at depths up to 9 feet Locating Steel Drums As shown i...

Page 16: ...h operations Figure 27 Basic Signal Patterns from Vertical and Horizontal Targets Help to Determine Target Orientation Figure 28 A 175mm Projectile can be Located up to 4 feet deep Figure 29 An 81mm Mortar can be Located up to 12 inches deep Figure 30 MK81 Low Drag Bombs can be Located up to 7 feet deep Figure 31 A Discarded Hand Gun can be Located up to 12 inches deep ...

Page 17: ...ates the presence of an energized power line This will not influence the meter indication unless it is associated with a magnetic structure 2 The instrument will not respond to non ferrous metals such as gold silver copper brass and aluminum ...

Page 18: ...l LCD Low L Medium M High H Extra High XH Volume 3 Levels Muted Medium and High Input Power One 9V battery Lithium recommended Battery Life 24 Hours intermittent usage Operating Temperature 13 F to 140 F 25 C to 60 C Water and Dust Resistance Rated IP54 when operated with earphone jack plug provided Overall Length Open 26 66 cm Closed 15 5 39 cm Nominal Sensor Spacing 9 5 24 cm Weight 2 4 lb 1 1 K...

Page 19: ... to inundation by fire water or other liquid intrusion or units that have been damaged or compromised due to repair alteration or modification by anyone other than an authorized repair representative 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 ...

Page 20: ...20 SECTION X PARTS DIAGRAM ...

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