Table of Contents
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Preface
The GA-52Cx Magnetic Locator is a product of over 60 years' experience in producing the world's
finest flux-gate magnetometers and magnetic detectors for aerospace, military and civilian
applications. The GA-52Cx incorporates the knowledge obtained from manufacturing under the
most rigid quality control standards. The heart of the GA-52Cx is its patented Schonstedt
HeliFlux™ magnetic field sensors. These sensors, acknowledged to be the world's finest, make
possible the unequaled performance of our locators.
February 2017
Instruction Manual
Model GA-52Cx
Magnetic Locator
Manufactured By
Schonstedt Instrument Company
100 Edmond Road
Kearneysville, WV 25430
(304) 725-1050
Fax (304) 725-1095
Web: www.schonstedt.com
E-mail: info@schonstedt.com
Made in USA
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Summary of Contents for Schonstedt Instrument GA-52Cx
- Page 1 Made in USA Preface The GA-52Cx Magnetic Locator is a product of over 60 years’ experience in producing the world’s finest flux-gate magnetometers and magnetic detectors for aerospace, military and civilian applications. The GA-52Cx incorporates the knowledge obtained from manufacturing under the most rigid quality control standards.
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Page 2: Table Of Contents
Table of Contents SECTION I: OPERATION Introduction .......................... 3 Turn-On, Volume and Sensitivity Settings ................4 Search Procedure ........................4 SECTION II: APPLICATION NOTES Basic Signal Patterns ......................5 Strongly Magnetized Markers ....................6 Locating Manholes, Septic Tanks and Well Casings .............. 7 Locating Objects under Snow or Water ................ -
Page 3: Section I: Operation
Figure 1 illustrates an application of the GA-52Cx 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. -
Page 4: Turn-On, Volume And Sensitivity Settings
Turn-On, Sensitivity and Volume Settings Set the On-Off/Sensitivity Control to position 2 and adjust the Volume Control until the idling tone reaches a desired level. The sensitivity of the unit can be increased (to detect smaller objects at greater depth) or decreased (to detect larger objects at smaller depths) by adjusting the On-Off/Sensitivity Control. -
Page 5: Section Ii: Application Notes
SECTION II: APPLICATION NOTES Basic Signal Patterns Figure 4: Signals from Vertical and 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. 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. -
Page 6: Strongly Magnetized Markers
If you are looking for a corner marker and detect two or more signals in the same general area, raise the locator several inches above the ground or decrease the gain setting. Any signal that disappears when the locator is held higher or the gain is decreased is probably coming from a smaller target. -
Page 7: Locating Manholes, Septic Tanks And Well Casings
Figure 8: Locating Manhole Covers Figure 9: Locating Water Well Casings The GA-52Cx can be used to precisely locate the metal handles or reinforcing bars on septic tank covers at depths of up to 4 feet. Figure 10: Signal Pattern Provided by Septic Tank Covers... -
Page 8: Locating Objects Under Snow Or Water
Locating Objects under Snow or Water The locator can be used in flooded areas, but keep the electronic unit out of the water. Snow poses no problem. Thrust the locator into the snow as deep as necessary to locate the target. -
Page 9: Searching Areas Along A Chain Link Fence
Searching Areas along a Chain Link Fence Searching in the vicinity of a chain link fence requires a reduced sensitivity setting and some control over the orientation of the locator. As illustrated in Figure 13, position the locator horizontally with its long axis perpendicular to the fence. This ensures that the upper sensor is kept away from the fence. -
Page 10: Locating Valve Boxes
Locating Valve Boxes Both the valve and its casing, when iron, provide strong magnetic fields that make them easy to locate. Plastic enclosures containing magnets are easily located at depths of 10 feet or more. Figure 15: Locating Valve Boxes and Casings Locating Cast-Iron Pipes As illustrated in Figure 16, cast-iron pipes produce the strongest magnetic signals at their joints. -
Page 11: Locating Steel Drums
Four-inch pipes can be located at depths of up to 10 feet. Locating Steel Drums As shown in Figure 17, the GA-52Cx’s signal pattern will vary depending on the vertical or horizontal orientation of the drum and how deep it is buried. A 55 gallon drum can be located at depths of up to 10 feet. -
Page 12: Additional Applications
Additional Applications 1. The military and many local and state police departments use the GA-52Cx to detect buried ordnance and discarded weapons. 2. People drilling in an area where hazardous materials might be encountered use the GA-52Cx to search the area prior to drilling. Other Schonstedt magnetometers are available that can be lowered down the hole for periodic checks as drilling progresses. -
Page 13: Section Iii: Maintenance
Replacement of Batteries The GA-52Cx is powered by two alkaline 9-Volt batteries. Alkaline or lithium batteries may be used; however, lithium batteries are recommended (due to their exceptional performance). -
Page 14: Troubleshooting Guide
Troubleshooting Guide Symptom Possible Cause How to Check How to Fix Dead Dead Batteries Replace ------------- Batteries not making Check for contact Clean contacts contact corrosion Battery leakage Remove Return unit to factory Intermittent Batteries not making Check for corrosion Clean contacts good contact Uncontrollable... -
Page 15: Section Iv: Service Information
Date of Purchase, and Description of Problem(s). An estimate will be provided prior to service work being done. See shipping information below: For Service or Repair Please ship locator (in its case) to: Schonstedt Instrument Company 100 Edmond Road Kearneysville, WV 25430 SECTION V: SPECIFICATIONS (Specifications subject to change without notice.) -
Page 16: Section Vi: Parts Diagram
SECTION VI: PARTS DIAGRAM - 16 -... -
Page 17: Section Vii: Limited Warranty
SECTION VII: LIMITED WARRANTY Schonstedt Instrument Company (Schonstedt) warrants each product of its manufacture to be free from defects in material and workmanship subject to the following terms and conditions. The warranty is effective for 7 years* after the shipment by Schonstedt to the original purchaser.
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