Heath Consultants Magna-Lock User Manual
Owner’s
Instruction
Manual
MAGNA-LOCK
Magnetic Locator
MAGNA-LOCK
Distributed by:
1-800-HEATH-US
www.heathus.com
1
Table of Contents
Introduction ..........................................................2
Theory of Operation ............................................ 3
Features...............................................................4
Pictorial Description............................................. 5
Basic Operation and Description .................... 6-9
Field Operation ..................................................10
Signal Responses ....................................... 11-13
Locating Near a Steel Fence ............................14
Specifications, Warranty & Service................... 15
Introduction
The Magna-Lock magnetic locator is a flux-gate type of
magnetometer which incorporates a unique patented technology that enables the factory to balance the magnetic sensing coils to a finite condition. This patented method of magnetic balancing is more advanced in the state-of-the-art technology .
The Magna-Lock implements “peak response” over
ferromagnetic objects by yielding on increasing audio signal
as the object is approached and passed over.
This instrument is distributed by Heath Consultants Incorporated. Heath Consultants Incorporated has over 65
years experience in the utility industry.
2
Theory of Operation
The Magna-Lock 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 magnetic balanced operating condition. In a uniform magnetic
field, such as the earth’s field, the two sensor coils maintain
a magnetic balanced status, because both of the coils experience the same magnetic lines of force. However, when a
ferromagnetic object is approached the field strength and
angle of the magnetic lines upon each sensor is different.
This difference, although minute, is enough to offset the critical balance and produce an audible indicating signal.
When no ferromagnetic objects are present, the speaker
emits a steady low frequency tone. As the object is approached, the audio frequency increases until the center of
the object is directly beneath the locator’s lo wer tip . The frequency peaks and then decreases as the object is passed.
The peak indicates the exact location of the object.
Nonferrous objects do not effect the locator. Objects
made of brass, aluminum, copper , etc. are ignored.
Sensor coils unbalanced by iron stake’s magnetic field.
3
Features
1. Instrument Control Panel
a) LCD Visual Displa y
b) W ater-repellant push button switch oper ation
2 . LCD Visual Display
a) T wo digit numeric signal indicator
b) Expanding analog bar graph signal indicator
c) “Low Battery” alert flashing indicator
d) Displays “ferrous” model operation
e) “Caution: Po wer Line” alert flashing indicator
3 . W ater-repellant push button operation, single action
a) “ON” - power ON
b) “OFF” - power OFF
c) “ERASE” - Interferences such as a nearby fence are
virtually erased allowing the signal to return to the
normal audio tone.
4 . Rugged high impact plastic enclosure with aluminum
sensor pole.
5 . P owerful magnetic speaker constructed with waterproof
Mylar cone.
6 . Six AA 1-1/2 volt battery operation.
7 . 100 hour battery life under typical conditions.
8. Sensitivity control, single turn, continuously variable
wide range depth adjustment.
9 . V olume control, single turn continuously v ariable
adjustment for selection of audio intensity .
1 0. Ergonomically designed for light weight, comf ortab le
balance for easy handling.
1 1. Flip out battery compartment cover for easy battery
access.
1 2. Signal “peaks” over magnetic objects.
1 3. Excellent depth capability .
1 4. Includes padded carrying case with shoulder strap or
hard case.
15 . Deep tone audio under search conditions.
16. W ater-resistant construction
4
MAGNA-LOCK
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