Product model: MD5008

Origin: USA

Product description:

The portable metal detector has the advantages of large detection depth, high resolution and accurate positioning, and is equipped with a ground balance system. The general americium metal detector is influenced by the stratum structure, and it is easy to send out false signals when detecting, but our products adopt advanced ground balance system, which can eliminate the interference of ground signals and gate only the signals of metal targets, so as to accurately search underground metal objects.

Metal detectors are not only used in the military, but also widely used in security inspection, customs inspection and public security inspection. Check metal foreign bodies in raw materials, and check underground pipelines and lines; Archaeology, prospecting, gold panning and treasure hunting; It helps people find buried metal cultural relics and gold and silver treasures, and is also an indispensable tool for building, construction, tap water decoration, power supply and power transformation.

The product uses sound alarm and instrument display, and the detection depth has a great relationship with the area, shape and weight of the detected metal. Generally speaking, the larger the area, the more the number and the greater the corresponding detection depth. On the contrary, the smaller the area, the less the number and the smaller the corresponding depth. The maximum detection depth listed in the table below is the measurement result of burying an aluminum plate of 20cm * 20cm * 0.5cm in dry soil according to the enterprise standard of products.

Identification function-this document can not only detect americium metal, but also distinguish different types of metals buried underground, and can identify whether it is non-ferrous metal or black americium metal. A lot of iron sundries are buried in some places. With this file, nails, bottle caps and iron wires can be excluded, while valuable metals such as gold, silver, copper and aluminum can be found.

This product can detect all metals, such as gold, silver, copper, iron and tin. But it can penetrate soil, ceramics, rocks, plastics, concrete, wood and other substances.

MD-5008 Operation Manual

Preparatory cutting

First, assemble the metal detector.

The assembly of the metal detector is very simple, without any special tools, just follow the following steps:

1. Turn the lock on the metal rod clockwise to release it.

2. Stand with a probe in hand. When the distance between the probe disk and the ground is between 0.5 and 2 inches, the arms are naturally comfortable. You can adjust the length of the probe rod accordingly.

3. Turn the lock counterclockwise to lock it in a fixed position.

4. Unscrew the nut on the probe disc and remove it from the screw. Insert the metal edge, align it with the bracket hole on the probe board, reinsert the screw into the hole, and then tighten the nut.

5. Wrap the probe cable around the metal rod. Leave enough length for high-speed detection of uneven ground.

6. Insert the probe disc into the socket on the control panel. Be careful to ensure that the core wire on the plug is aligned with the socket.

Note: the probe plug can only be inserted into the socket in one way. Don't insert it forcibly to avoid damage. Disconnect the probe tray cable from the probe tray. Please grab the plug and unplug it. Don't unplug the cable.

7. Loosen the nut on the probe disc and adjust the probe disc to the required angle (the probe disc should be parallel to the ground). Screw the nut to an appropriate degree to facilitate the detection of the rotation and vibration of the disc.

Note: Don't screw the probe disk too tightly, and don't screw it with pliers and other tools.

Two. Install the battery

You need eight 1.5V batteries to power the metal detector.

pay attention to

Only new batteries of the specified size and recommended model can be used.

Do not mix old and new batteries and different types of batteries (standard batteries, alkaline batteries or rechargeable batteries) or

Rechargeable batteries with different capacities are used together.

1. Please turn off the instrument when charging the battery.

2. Press and hold the battery cover on the right side, and remove the battery cover in the direction of the arrow.

3. Put 4 1.5V batteries into the battery compartment, and pay attention to the marks of positive and negative poles.

4. Replace the right battery cover.

5. Press the battery cover on the left and move it away in the direction of the arrow.

6. Put 4 1.5V batteries into the battery compartment according to the correct direction of positive and negative poles.

7. Replace the left battery cover.

pay attention to

● Replace old batteries and weak batteries in time; The battery will leak chemicals and damage electronic components.

● If you don't plan to use the detector for a week or more, please take out the battery.

● Properly dispose of old batteries.

(1) Test the battery

After starting, if the indicator light of the detector is dim or not bright, the detector will not be turned on, the volume is weak, it will not be adjusted well, the operation is unstable, or there is deviation, indicating that the battery is insufficient and needs to be replaced.

(2) Adjust the level gauge

Turn the state to off, and aim the pointer at the 0 point on the scale with a screwdriver.

Third, use headphones.

You can connect an earphone (not equipped) to the detector, so that you can hear the sound alone. Using headphones can save battery, and it is easier to determine the subtle changes of sound, thus achieving better detection results. When using headphones, do not use the built-in speaker.

Description of each operation key of the instrument:

1 .zero button

There is a button on the index finger of the probe handle, which is called the zero button. When you press it, the pointer of the electric meter will return to zero scale. The zero button has a memory function, which can remember the working environment of the instrument at that time. For example, if the probe disk is placed above the soil, the soil will produce a certain signal to the instrument, which will make the pointer deviate to the zero scale. Press the button, the pointer will return to the 0 scale, and the signal of the soil will be gone, which can be used to detect metals. Therefore, it must be pointed out that the button cannot be pressed around the metal object, because after being pressed, the signal of the metal will be memorized, and the metal will no longer be detected. It must also be pointed out that when adjusting any knob of the instrument, you must first press the zero button, and then release it after adjustment. In the detection process, with the change of environment, the pointer of the instrument will deviate from the zero scale, and once the button is pressed, the pointer will return to the zero scale. Therefore, you should press this button all the time during the inspection.

Note: it takes about one minute to warm up the machine just after it is started, otherwise press the down zero key, and once it is released, the pointer will deviate again and remain normal after preheating.

2. Tune button:

By adjusting the tuner button, the sound of the instrument can start from zero, from light to heavy. When the sound starts from zero and is almost inaudible, it is called critical sound. The instrument has the highest sensitivity only when it is set to critical sound. Otherwise, no sound, too loud or no sound at all will reduce the detection effect. Note: When adjusting the critical tone, press the zero key, and then release it after adjustment. In the process of using the instrument, if the critical sound gradually becomes louder or smaller and disappears, press the zero key to recover.

3. Sensitivity knob (sensitivity)

The sensitivity knob controls the sensitivity of the detector. Turn the knob counterclockwise to the end, and the instrument has the lowest sensitivity. On the contrary, turning clockwise to the end has the highest sensitivity and the greatest detection depth. The adjustment of sensitivity depends on environmental theory, and the higher the sensitivity, the better. For example, the "mineralization reaction" is high, the sensitivity will cause false signals, and the instrument will ring everywhere, but nothing can be detected.

At this time, the sensitivity should be reduced to support the influence of complex strata on the instrument.

Note: Before adjusting this button, press down the zero button first, and then release it after adjustment.

4. Ground balance.

To detect the ground balance knob, first set the operation mode switch to the ground balance position, and then adjust the ground balance button. Turn the ground balance button to the maximum, and the sound of the instrument will be enhanced. When placed in MIN, the sound will weaken.

5. Identification knob (identification)

The identification knob is used to identify the working mode, so before turning this knob, you should turn the working mode switch to the identification gear. By aiming the identification knob at different scales, we can select different signals. If the recognized target is an iron plate, the following phenomena will occur: when the probe is close to its edge, the reaction is the same as that of ferrous metal, and after the probe is placed above the iron plate, the reaction is the same as that of non-ferrous metal. In this case, you can not only judge

The underground is an iron plate, which is large enough to estimate its area. Another function of the identification knob is to exclude small pieces of metal from similar metals and select large pieces of metal, such as burying a nickel underground. We turn the identification knob clockwise to the right (be careful to press the knob), and then move the probe over the coin. After several adjustments, the probe just makes a faint sound when it approaches the coin, which is the detection point of the coin. After setting this point, all non-ferrous metals with a volume greater than 5 points can make sounds, and non-ferrous metals with a volume less than 5 points are excluded because there is no signal.

Note: Press the identification button before each adjustment and release it after adjustment.

6. Operation mode switch (ground balance &; Discrimination)

The operation mode switch has two gears, one is ground balance and the other is recognition. In the ground balancing gear instrument, all metals will make noise and have no recognition function. But the influence of formation "mineralization reaction" can be ruled out. After the instrument is well balanced, it has sufficient penetration, stable operation and accurate indication, so this method is generally used when starting to detect a certain area. Identification method and land balance method are used together. After the existence of metals is proved by land balance method, where there are a lot of scrap metal impurities, the identification files are used to distinguish the types of metals or select large and valuable metals.

Precautions in detection

Indoor testing and matters needing attention

(1) Take away the jewelry such as watches and rings that you carry with you, and then put the detector on a wooden or plastic table.

(2) Adjust the angle of the probe disk so that its disk surface is parallel to the ceiling.

Warning: Do not test the detector on the floor of the building. Because most buildings have metal in the floor, it will interfere with the measured object or completely confuse the signal.

(3) Move the sample of the material to be tested (such as gold ring or coin) to a distance of about 5 cm from the probe disk.

note:

The probe disk can't detect static objects, because you don't need a probe to search and scan at this time, so you must move the measured objects. If money can be used for detection, it will be detected by holding the plane (not the edge) of the money and making it parallel to the detection board.

Easier to test and use outdoors.

(1) Look for outdoor metal-free areas.

(2) Put the sample you want to test (such as a gold ring or coin) on the ground. (If precious metals such as gold are used for testing, mark the placement area to facilitate future search. Don't put samples on tall plants or trees.

(3) Hold the detector so that the detector disc is 2.5-5cm parallel to the ground, and slowly move the detector disc above the sample placement area to conduct edge-to-edge (from left to right) search.

Actual detection operation:

1. Prepare for testing.

After the battery is put in, turn on the power switch, and the instrument will work with electricity. At the beginning, please pay attention to the electric meter. Generally, the hands are not in the middle, but to one side. After pressing and releasing the button once, the pointer temporarily returns to the middle, but slowly shifts to one side, indicating that the instrument is unstable and cannot be used immediately. You can press the button several times, and the pointer will not be biased after a while.

Touched. The above phenomenon is normal. After the instrument is turned on, there is a short preheating time. In the meantime, the probe should be held in the air and the probe can only be detected after the pointer returns to zero. When you press the button, you should look at the power indicator. If the light is too dim, you must replace the battery. The actual detection of instruments is like the mine detection of engineers. The operator holds the handle and lets the probe move slowly along the ground. During the whole detection process, the distance between the probe and the ground should be kept at about 20 cm, and the distance should not be changed as much as possible. When metal is detected, the instrument will make a sound, and the pointer of the electric meter also has a scale indication. The metal on the human body will affect the detection, so the operator is required to remove all metals such as watches, rings, metal belt buckles and cigarette cases, and cannot wear leather shoes with iron. It is best to wear cloth shoes or plastic shoes to work. 2. Ground balance mode Turn the working mode switch to the balance gear, and the instrument will be in the ground balance working mode. This method can eliminate the "mineralization reaction" of the earth and has good penetrability. Therefore, this method is often the first choice for both indoor search and field work. After the existence of underground metal is proved, the identification document is used to distinguish the types of metal. In the working mode of ground balance, as long as the probe moves above the target, the instrument will make a sound, and the electric meter also has a scale indication, and any type of metal will increase the sound.

The operating procedure is as follows:

(1) Turn on the power switch.

(2) Turn the operation mode switch to the ground balance gear.

(3) Hold the probe 60 cm above the ground, press and release the zero adjustment button for many times, and let the instrument warm up for a period of time until the pointer of the electric meter returns to zero and no longer deviates.

(4) Shout out "critical voice"

(5) Adjust the balance according to the above method.

(6) Search the probe along the ground and keep a distance of about 20 cm from the ground.

Main technical parameters

Emission frequency: 6.99 kHz

Signal frequency: 437 Hz

Weight:1.75kg.

Power supply: 8 5th batteries.

Sensitivity: It can be detected at a distance of 30-40 cm with a test of 25 cents.

Detection depth: 3.5m-5m.

Note: The detection depth of this instrument is closely related to the area, shape and quantity of the detected metal. Generally speaking, the larger the area, the more the quantity. The higher the detection sensitivity.

Repair and maintenance:

(1) If the instrument doesn't work normally, it may be that the battery is low. Try to replace the battery first.

(2) Put the battery into the battery box according to the positive and negative poles. If you stop using it for a long time, please take out the battery to prevent it from being damaged in the box.

(3) The plug connected to the probe cable shall not be affected with damp. After the plug is wet, the instrument loses its detection ability. In this case, the plug must be dry before use.

(4) Don't work in rainy days or hot sun.

(5) The probe should not be placed near the fire or in other high temperature environments.

(6) Each set has a warranty certificate, and maintenance is free during the warranty period. However, if the user unpacks the box and changes the line himself, the manufacturer is no longer responsible for maintenance.