The instrument using the detected objects below the surface of the matter density changes caused by the detector frequency change the principle to design， the maximum detection depth is in a uniform surface following 19mm， detection error range is 3mm， the detection range of objects can not be less than 1200mm2
Will this instrument is arranged on the surface to be measured， press the power switch， at the first indication of red light and green light lit up， and a & ldquo; & rdquo; sound， and the red indicator light is extinguished， said the success. When the sampling time first red indicator light and a short & ldquo; drops & rdquo; sound， said sampling is not successful， the interference or the object to be measured built-in exceeds the allowable value.
Test operation:
Sampling after the success， don\'t let go of switching power supply， along the under test surface moving. When the sensor to the foreign body and the red indicator light began to turn light， when to LED light and a & ldquo; drops & rdquo; sound， with a pencil do mark， release the power button.
The apparatus under the surface in the opposite direction sampling， close to mark the location of， when the sensor to the foreign body and the red indicator light began to turn light， when to LED light and a & ldquo; drops & rdquo; sound， with a pencil do mark， release the power button.
Repeatedly test several times， if all the alarm. The middle of the region between the following may be a support column (foreign).
When there is no metal or other foreign matter， it will not flash and do not sound， in order to test the results accurately， you can test several times.
Power supply: 9V type 6F22 battery
Product size: 145x62x25mm
Product weight: about 71g (no battery)
Standard configuration: bare table (no battery)， battery， manual， certificate (warranty card)
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