PQWT SLKD-M802 User manual

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Operation Manual for SLKD-M802 Underground
Metal Detector / Underground Metal Pipe Detector
Contents
Product Introduction.............................................................................................................................2
Main Application....................................................................................................................... ......2
Operation Simulation Diagram............................................................................................................3
Instrument Structure and Introduction........................................................................................4-10
Names of Machine Parts...................................................................................................................4
Introduction of Operating Button................................................................................................5-7
Introduction of Signaling Display Device.....................................................................................7-8
Introduction of external power supply................................................................ ........................8-10
How to Install................................................................................................................ .............10-12
How to Operate.........................................................................................................................13-16
Troubleshooting............................................................................................................... ..........17
Technical Parameters...............................................................................................................17-18
Maintenance and Repair............................................................................................................18
Safety Measures..........................................................................................................................19
Guide for After-sale Services............................................................................................. .......19
Copyright Statement......................................................................................................... ........20

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Product Introduction
SLKD-M802 underground metal pipe detector is the patented product which
developed independently by Hunan Puqi Geologic Exploration Equipment Institute,
patent number: 201230519707.5 .SLKD-M802 underground metal pipe detector is a
built-in automatic sensitivity adjustment, metal sort discrimination, easier to use ,
high-performance equipment.
Main Application

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Operation Simulation Diagram

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Instrument Structure and Introduction
Names of Machine Parts
1. Detection disk 2. PVC bar 3. Connecting device 4. Metal bar
5. Display table 6.Grab handle 7. Hand Bracket 8. Host Machine
9. Connecting rod and nut

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Introduction of Operating Button
1. Main Switch
The instrument power switch
2. GBAL
There exist trace metals more or less in the soil and rock or the mine area. Detector
probe generates a signal when close to the ground, forming a mineralization reaction
interference. In the process of searching along the ground, change the distance of the
probe with the ground caused by the critical voice suddenly large and small changes ,
people can not tell the end is a signal or a signal metal mineralization reaction . To
solve this problem , this instrument is designed to ground balance line, to minimize
the impact of mineralization reaction .
This knob to adjust the instrument during use according to the actual situation, the
reactions to adjust the instrument so that the instrument is in top working condition.
This is what we want to be transferred to the balance point, the signal source is
detected only when the instrument is issued until the valid alarm.
3. RECOG

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RECOG knob is used to adjust metal detection mode to identify the metal type. We
detect metal objects because of differences in the quality of its degree or other metal
element -containing impurities, lead to confusion electromagnetic signal leaving the
instrument will not be able to properly identify, so need to be adjusted to enhance the
instrument recognition ability to distinguish .
4. TUNER
Tune knob is in collaboration with various operating knob debugging instrument used
to coordinate the arrow keys when using the built- balance each knob are likely to use
this knob to adjust the fit of the instrument, it is ultimately the instrument to achieve
the best working condition.
5. Phone Out
SLKD-M802 instrument can be equipped with headphones. After plug in headphones,
external speakers sound interruption, the operator can hear the sound from the headset,
so that operating in a noisy or night environment. Use the headset to get battery
saving, meanwhile it is easy to determine the sound subtle changes, so as to achieve
better detection results. The headset is connected to the detector, we need to plug the
headset into the host back-end headphone jack.
6. Power Supply Socket
In addition to the built-in battery box, and set up an external power supply, but
considering the customs forbid the export of battery, we will equip the external power
supply or not according to the actual demands.
7. Dashboard Line Jacket
8. Detection Mode Switch
The instrument setting two detection modes-GROBAL mode and RECOG mode to
help us in detecting selection, so that find the object detected quickly.
(1) GROBAL mode: All-metal mode, it can not distinguish nonferrous or ferrous
metals in the detection, only response metal electromagnetic signals and prove the
exist of metal .
(2) RECOG mode: Recognition mode, it can distinguish nonferrous or ferrous metals.
9. Working mode switch : CONVE and SET

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Sometimes we choose the detection mode corresponding to select the working mode ,
an effective response to the detection of cognitive pattern generation, so that the
instrument is more accurate and effective work .
(1) Under CONVE state, the instrument will response no matter the GROBAL mode
or RECOG mode when detecting the object.
(2) Under SET state, the instrument can distinguish the detected signal by hand
setting.
10. Detection disk connecting jacket
Introduction of Signaling Display Device
1. Reset Button

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There are two buttons at the bottom of indicating meter - Reset Button , also known as zero button.
If you hold the button down , the instrument will always be in reset state , will not be reacted for
any signal.
Before adjusting any knob on the instrument, should first hold the reset button down, after finish
adjusting, release the button. Indicating meter resetting occurs deviation along with changes in the
environment, press , release the button , the instrument will reset through pressing and releasing
the button,therefore, the entire detection process should often press the button to reset.
After press and release the button , memory circuits inside the machine will make a note to adjust
the working status, if you forget press and release the button, it is bound to affect the normal work
and detecting depth of the machine.
Note: You need to warm-up time of about 1-3 minutes once machine on . If the instrument not
reset, press the button and release , instrument will be in the reset state.
2. Dashboard lights
(1) Signal light is mainly used for reactive functional instrument to detect
electromagnetic signals or sensor to metal and metal type when distinguishing feature
(2) When we use the GROBAL mode < all-metal mode > , upon detection of the
sensor signal to the metal , the instrument signal indicator lamp is usually six to the
right of the display, along with the strength of the signal and sound an alarm if the
signal the stronger or object to be detected from the closer , the bright lights of the
more instruments , the alarm sound louder . However, on the contrary side . this time
the instrument is not capable of distinguishing the metal category .
(3) When we use the identification mode , when metal is detected or sensed signal, the
signal indicator is usually based on the instrument detects metal or induced to
differentiate categories of signals have different display , under normal circumstances
is not displayed on the left lights alarm sound is represented as black metal . the right
of the display lights and is accompanied by an alarm sound is represented as
non-ferrous metal . Alternatively, the reaction signal indicator lamp in the operating
mode in different states also appear different states.
(4) Signal Indicator : When an object is detected or sensed electromagnetic signal
source , the intensity of this light display or sound an alarm to be issued as the size of
the object to be detected , or the size of our burial depth of a judge.

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Introduction of external power supply
1. Battery Level Indicator
This light that represents the battery cartridge capacity situation will affect the normal use of the
instrument when the power is low .
2. Battery Test Button
This button can test our battery power is sufficient and can be used normally or not. When we
press this button, from the four battery indicator light to know battery condition, to determine
whether they should be charged .
3. Battery Charging Jack
Should the proper use of matching charger. During charging, if the battery is low, the charger is
bright yellow lights. Filled with the light turns green . We should not for a long time while
charging charging , note damage to the battery . Charging hole and keep clean and dry.
4. Power LED
This light up after starting up, it indicates that the instrument is in a state of power-on.
5. Cell Box Switch
This light up after pressing the button, indicating that the battery box is powered .

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6. Power Line Jack
Here is used to connect the instrument host, and should be properly connected and keep the jack
clean and dry.
How to Install
1. Connecting PVC bar with detection disk. First remove detection disk connecting
rod and the nut (Figure 1 ), and then use connecting rod and nut fix PVC bar on the
detection disk ( Figure 2).

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2. Connect the host machine with detection disk using connecting device.

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3. Insert detection disk plug into detection disk interface of host machine.
4. Place 8 AA battery into the battery box , turn on the power switch, you can begin to
detect preheating .
Kindly Reminder: Please use the rechargeable AA battery to avoid the environmental
pollution.

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How to Operate
SLKD-M802 Underground Metal Detector is a simple, convenient and practical,
superior performance of instrument . Operating methods as follows :
First, we should note that whatever the detection method to use, should pay attention
to keep the probe from the surface corresponding height, the probe should not be
directly caused by friction with the ground to make equipment not work properly or
damage to the instrument. After adjusting the height of 10-15 cm, or adjust height
from the ground according to the actual situation, then move forward slowly and
smoothly. Can not fluctuated random swinging instrument, thereby interrupting the
instrument balance resulting instrument does not work properly, caused chaos alarm
continuely. Fast moving around or just shake the probe will lose the signal source we
will detect, thus affecting to detect the target .
GROBAL mode
GROBAL mode is that all-metal mode. This way you can maximize eliminate the
earth mineralization reaction. Which can reach the maximum detection depth . And it
has better penetration, so no matter indoor or outdoor job search, often choose this
way. In the GROBAL mode of operation, as long as the probe is moved above the
target, the instrument will emit a continuous sound, any type of metal will make the
sound increases, the meter reading rises .
Adjustment procedure is as follows :
1. We need to find a empty place there not exist any metal objects .
2. Lift the probe of 70-80 or 30-50 centimeters from the ground .
3. Turn on the power switch , adjust the Detection Mode Switch to the GROBAL
mode, and adjust the Working mode switch to CONVE mode.
4. Hold the reset button down, rotate DISC knob to adjust the signal critical
instrument sound .
5. Make the probe close to the ground, about 10-15 cm from the ground, then if the
critical sound increases, raised the probe, hold the reset button down, pullback the
DISC knob a little, release the reset button, then close to the ground and try again, if
the sound is still increasing, then according to the above steps again to pullback a little
and try again, after several adjustments until critical sound does not change through
lift and drop the probe, the ground balance station is good now. After the adjustment,
the earth mineralization reaction is substantially excluded, the probe move freely on

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the ground will not change the critical sound, only in the face of the metal target , the
signal will send out.
6. If the probe is close to the ground sounds small, raised the probe, hold the reset
button down, rotate the RECOG knob to the right < clockwise >, and then release the
button close to the ground to try again, if still small voice, adjust once again until
probe lift -and-drop voice became unchanged.
Note : Before each of these adjustments must press the reset button, after adjustment,
release the button .
7. After the adjustment above, it can slowly move the probe along the ground, in the
detection process equipment should always keep humming - sound critical , if the
sound slowly increases or decreases, press and release the reset button to make critical
voice returned to normal. In the face of metal, have a greater sound, there will be a
clear response on the dashboard.
RECOG mode
RECOG mode is mainly for us to distinguish categories of non-ferrous or ferrous
metals , which can detect the metal according to their own choice. When using this
mode, the instrument of interference mineralization reaction weakened, damage depth
detection, we generally recommend that users first use GROBAL mode, after detected
metal signal, then use RECOG mode to distinguish the metal category.
Adjustment procedure is as follows :
1. We need to find a empty place there not exist any metal objects .
2. Lift the probe of 70-80 or 30-50 centimeters from the ground .
3. Turn on the power switch , adjust the Detection Mode Switch to the RECOG mode,
and adjust the Working mode switch to CONVE mode.
4. Hold the reset button down, rotate DISC knob to adjust the signal critical
instrument sound .
5. Make the probe close to the ground, about 10-15 cm from the ground, then if the
critical sound increases, raised the probe, hold the reset button down, pullback the
DISC knob a little, release the reset button, then close to the ground and try again, if
the sound is still increasing, then according to the above steps again to pullback a little
and try again, after several adjustments until critical sound does not change through
lift and drop the probe, the ground balance station is good now. After the adjustment,
the earth mineralization reaction is substantially excluded, the probe move freely on

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the ground will not change the critical sound, only in the face of the metal target , the
signal will send out.
6. When using the RECOG mode, the instrument may appear difficult to adjust or
sustained chaos alarm . Under normal circumstances we should adjust the GBAL
knob to correct the interference mineralization reaction .
Mineral Prospecting
With SLKD-M802 type instrument can detect buried mineral deposits which not very
deep, including natural gold bullion, pulse gold deposit sand deposit, and so on all
kinds of high-grade ore .
Detection of natural gold nuggets like finding metal coins as ground balance approach
to proceed. Most nuggets buried in the high degree of mineralization of formation , so
well balanced must be adjusted carefully in advance.
GOLD in the sand , as well as gold in the form of fine pieces mixed with sand
together, and there is often a large amount of heavy metals in sediment deposits, the
same signal caused by the mixture of black metal , but the reaction is weaker than the
pure metal , and generally sounding relatively wide area .
SLKD-M802 can be conducted screening of ore block. When performing this work,
the operator does not need to hand-held detector but the instrument is fixed in a
non-metallic support, tune out the critical sound, then make the pieces of ore close to
probe, according to the size of the sound to determine the high or low levels of
content. It should be remembered : After each test of a sample to press and release the
reset button. Determination of the metal content screening technology vein gold
deposits and the determination of the end of the old mine left mine wells is useful,
some ore mining people see gold at the surface of the leaves, the rest of the ore throw.
In fact, it is thrown away in some nuggets of gold still contained inside.
Detection Example
The description above of the mode of instrument operation, the operator can use the
instrument according to the specific circumstances.
Case 1
In an old house in search of deeply buried relics, for a long time due to the wide
variety of discarded metal debris such as nails, wire, old locks, pots and other debris
buried underground, these things are generally buried in shallow, the larger signal will
be issued, in order to exclude the debris away to detect buried deep targets. In this

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case , we should first put metal furniture moved out of the house, a slight decrease of
the sensitivity of the instrument and carefully adjusted the balance . When the probe
found that there is a small metal debris will be cleared out, by over- meticulous
cleanup, after the shallow soil layer of metal objects dug up, then search of the deeper
site.
Case 2
In a place there are many scrap nails, detection signal emitted from nails everywhere,
that make the detection work is very inconvenient. Encountered such a situation, you
can put a nail on the ground in advance, then use the probe swept the top nails, if the
sound of the instrument increases,hold the reset button down, rotate left
( counter-clockwise ) a little of TUNE knob, release the button to explore once again,
if the sound is reduced , move probe away same as above, hold the button down,
rotate right ( clockwise) a little of TUNE knob, then release the button to move the
probe above nails test again, until adjust the sound unchanged. After a good tune, the
buried nails and smaller black metal than the nails sound of the instrument will not
increase, while all non-ferrous metal and black metal bigger than nails have a larger
signal sound.
Overview
Detection work is a meticulous and arduous job. It requires the operator to have
patience, confidence and perseverance. In practice, the detector is not able to detect
any metal objects underground show a clear picture, it is only able to predict about the
nature of the target position of the metal , or metal objects. In practice, the accuracy of
detecting, probing depth and geological environmental conditions, soil humidity, size
of the object buried, buried objects length of time, the degree of oxidation of the metal
object, the quality of the metal object, the operator's operation correctness to form
relationships. To be able to find exactly what they need, but also requires the operator
to have a wealth of experience, according to the response of the instrument, analyzed
carefully to make the right judgments.

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Troubleshooting
1. In the course should be concerned about battery indicator, if the power is low, the
instrument will lead to inadequate transmit power and anti- mineralization reaction
diminished capacity and internal balance system does not work , the performance of
shallow depth, speaker rules buzzing sound.
2. If the instrument is not working properly, then the sound can not be reduced after
increase, indicating that lack of electricity , it should charge or replace the battery.
3. Please do not press the button at the top of the metal, should press the button on the
ground where no any metal. When detecting need to release the button.
4. If the instrument is not able to maintain a "critical voice", the instrument is failure,
should stop using, and return for repairing.
5. Warning : You must ensure that the battery is loaded in the right direction,
otherwise the instrument will bring irreversible damage.
6. Instrumentation does not respond or if no alarm sound after adjust the instrument ,
please warm up 3-5 minutes, if the local temperature is too low, please extend the
warm-up time .
7. if boot , power light is off . Check the batteries if there is enough battery power.
Technical Parameters
Model No. : SLKD-M802
Search Systems: Magnetoelectric Effect
Operation Method: Detection Disk
Maximum Detection Depth: 3 Meters
Power Supply System: 8*1.5VAA—NIH/R6P
Transmission Frequency: 5.1—7.2KHz
Signal Frequency: 320—480Hz
Power Consumption: 0.6W
Power Supply: DC12V

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Working Temperature: -10℃—40℃
Maintenance and Repair
SLKD-M802 is a instrument with sophisticated design and exquisite workmanship.
The following suggestions will help you maintain the product well and prolong its
service life.
1. Cleaning
The part of the probe is the most easily soiled. You can use a towel soaked in clean
water scrub carefully, but the plug of connected probe cable absolutely can not wet,
once plugs damp will loss detection capabilities, in which case the plug should dry
before using. Instrument box is not waterproof, can not be washed with water, only
wipe with a towel. Can not operate in rain day outdoor.
2. Temperature
The instrument can not be placed near the fire or other high temperature environments.
It can not be placed directly under prolonged exposure to the sun . It can not be placed
in a low temperature environment in the cold for a long time. If so, there will be some
parts of the instrument may cause breakage and aging.
3. Brine and sulfuric acid
Brine, sulfuric acid have great causticity. If the instrument run into brine and sulfuric
acid should immediately wipe clean. Be careful not to let water into the engine, and
quickly dry with a towel or with a hair dryer
4. Batteries
The batteries should be placed as carved symbols, if long-term does not boot, please
remove the batteries to avoid corruption in the machine box.
5. Magnetization
Instrument should be placed in a moisture-proof and dry place. Can not be placed
with other radiation source, electromagnetic products together to prevent the
instrument from being magnetized, caused the instrument can not properly use and the
program confusing.

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Safety Measures
1. Do not surpass specified voltage of power supply system. Please use specified
peripheral equipment.
2. Do not detach the prospecting instrument or charger under any circumstance. It is
strictly forbidden to modify the equipment. If warranty label of the instrument is
damaged, warranty service voids.
3.Do not use the prospecting instrument on thunderstorm days or in the burning sun.
4. Do not place the prospecting instrument beside stove or in other high temperature
environments.
5. This product is a precision instrument , be sure to pay attention to when using the
instrument gently to prevent the fall, bumps.
Guide for After-sale Services
1. Within 1 year of the purchase date, if instrument quality problems, please send us
the photos, we will send the required part or repair for you. Each of us shall take care
of the corresponding shipping cost on each side.
2. Instrument warranty does not cover the accident, misuse, neglect, alteration,
modification, magnetized, unauthorized service and damage caused by prolonged
exposure in corrosive salt mixture.
3. If need to purchase related accessories, you can contact Hunan Puqi Geologic
Exploration Equipment Institute customer service.

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Copyright Notice
1. Hunan Puqi Geologic Exploration Equipment Institute has the final interpretation
of the operating instructions.
2. Hunan Puqi Geologic Exploration Equipment Institute reserves right to modify
equipment specification without any advance notice.
3. All pictures for reference only in operation manual, please in kind prevail.
4. Please observe local laws and regulations, Hunan Puqi Geologic Exploration
Equipment Institute will not be responsible for any legal issues which caused by the
instrument.
5. The products of Hunan Puqi Geologic Exploration Equipment Institute are patented
products, If anyone imitates, we would investigate his legal liabilit.