GARRETT S-21664 HandHeld Metal Detector User Guide
- June 7, 2024
- Garrett
Table of Contents
S-21664
HANDHELD METAL DETECTOR
1-800-295-5510
uline.com
COMPONENTS / FUNCTION
3-WAY POWER SWITCH
The 3-way power switch has two on positions and a central off position. When
the power switch is pressed forward, the metal detector will sound an audible
alert upon detection of any metal and the red light alert will appear. When
the switch is pressed backward, the metal detector will vibrate upon detection
of any metal and no sound will be heard, even though the red light alert will
appear. Power is turned off when the switch is in the central position.
LED LIGHT ALERTS
The rear green light illuminates whenever the detector is on. The red light,
forward-most of the three lights, illuminates whenever metal is detected. The
center amber light illuminates when battery power becomes low and the battery
should be recharged or replaced.
AUDIO ALERT
The speaker provides a clearly audible sound whenever metal is detected. The
audio alert sounds only when the power switch is pressed forward.
VIBRATING ALERT
The vibration mode is activated when the power switch is pressed backward. The
unit’s handle will vibrate and the red light will alert the operator whenever
metal is detected.
INTERFERENCE ELIMINATION BUTTON
The detector is factory set for a high level of sensitivity to detect the
smallest of items. This high level of sensitivity may produce alarms when
approaching a floor containing rebar. Press and hold this button to decrease
sensitivity to a level that does not respond to the rebar. Release button and
detector returns to normal sensitivity.
OPERATION
Turn the detector on by setting the power switch to the forward or back on position. The green alert light will illuminate and an audio alert or brief vibration will indicate the unit has been turned on. The green alert light will remain on until the unit is turned off.
When the detector is operating, it will detect metal only while it is in motion. Move the instrument within approximately one inch from the person (object) being inspected. A sound will be heard or vibration felt and the red alert light will illuminate whenever metal is detected. Operation is completely automatic. No “retuning” is ever necessary. All conductive metals will be detected, including ferrous, non-ferrous and stainless steel.
Audible Operation Press the power switch forward and a clear alert signal will be heard, either through the speaker or through an optional earphone, whenever the metal detector detects metal. The forward-most red alert light will also appear upon detection of metal.
Silent Vibrating Operation Press the power switch backward and the detector handle will vibrate whenever metal is detected, but no sound will be heard. The red alert light will always appear upon detection of metal.
NOTE: Do not affix metallic labels (or any material that might cause the detector to alarm) to the detection area of the metal detector. Doing so might cause an imbalance within the detection field and thereby reduce scanning effectiveness.
SERVICE
BATTERY REPLACEMENT
Slide back the battery cover (do not attempt to remove it), tilt the detector
and battery will slip out. Replace with fresh battery. Because the battery
cover will not slide back if the battery is inserted improperly, never force
the cover. When the metal detector is to be stored more than 30 days, remove
the battery.
INTERNAL SENSITIVITY ADJUSTMENT
Some applications may require a sensitivity setting other than the nominal
factory setting. This may be achieved by choosing an appropriate test target
and utilizing the internal sensitivity adjustment as follows:
Turn on the metal detector. Rollback the grip cover just below the nameplate. Insert a small flat or Phillips screwdriver into the potentiometer located within the exposed hole. Rotate the potentiometer counterclockwise to decrease sensitivity, or rotate the potentiometer clockwise to increase sensitivity, until the desired detection of the test target is achieved.
An excessive sensitivity setting may result in unstable operation (chatter) and excessive detection of surrounding metal.
NOTE: This sensitivity adjustment potentiometer is set to the nominal
center (12 o’clock) position by the manufacturer.
CAUTION! Always verify that the detector is set to the desired
sensitivity level by testing with appropriate targets any time the sensitivity
adjustment is changed.
DETECTION PRINCIPLES AND CAPABILITIES
The metal detector is an active handheld metal detector with very high
sensitivity to all metals, including ferrous, non-ferrous and stainless steel.
Detection and alarming takes place when the instrument is passed in close
proximity to metal objects.
Detection range is dependent upon the size and conductivity of the metal
object. The larger the object, the greater the detection distance.
The detector is factory preset to nominal sensitivity with no operator
adjustments required. This ensures that the detector will be used at the
proper operating level established for the particular security need.
Should nearby, stationary metal objects (floor rebar, metal walls or cell
bars) cause interference to the scanning process, an interference elimination
button is available to momentarily reduce sensitivity so as to ignore the
interfering nearby metal and permit precise scanning of the individual or
object being scanned.
When metal objects are encountered, the red LED is activated along with an
audible or vibrating alarm (depending upon user setting). An optional earphone
may be used by the operator. Further convenient LEDs include green for power
on status and amber for low battery indication.
RECOMMENDED BODY SCANNING PROCEDURE
The interference elimination button may be required if floor rebar is present.
NOTE: Detection is only possible when the detector is moving over a metal
object.
uline.com
0621 IS-21664
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