KRT706400 EN
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7.2 Inserting/Replacing the batteries
Alkali-manganese batteries are recommended for the measuring tool. To open the battery lid,
press on the latch 13 and fold the battery lid up. Insert the battery. When inserting, pay
attention to the correct polarity according to the representation on the inside of the battery
compartment. If the measuring tool is not used for a long period of time, the battery must be
removed. The battery can corrode or discharge itself after long periods.
7.3 Initial operation
▪ Protect the measuring tool against moisture and direct sun light.
▪ Before switching the measuring tool on, make sure that the sensor is free of moisture. If
required, wipe the measuring tool dry using a cloth.
▪ If the measuring tool was subject to an extreme temperature change, allow it to adjust to the
ambient temperature before switching on.
▪ Note: Using the detector near a microwave oven or other transmitting equipment will affect
the detection result.
7.4 Switching on and off
▪ Press the switch ON button (5) to switch on the measuring tool. After a short test, the
detector will enter the ready to run state. The measuring tool automatically enters the metal
detecting mode.
▪ The measuring tool needs calibration if signal detecting indication (h) works with no metal
interference.
▪ To calibrate the device, use following method. Place the measuring tool in an environment
without metal and without a magnetic field (up in the air for example). Press the metal
measuring button (8) until signal on display (h) is 0 and the green light is illuminated. The
calibration is finished. Release the button to detect metal.
7.5 Detecting metal objects
▪ Press the metal detection button (8) to enter metal detection mode. Symbol b will be
displayed on the screen and the green light is lit up.
▪ Place the measuring tool onto the surface to be scanned and move it in the same direction.
When the measuring tool comes close to a metal object, the amplitude of the measuring
indicator (h) will increase. When it moves away from the object, the amplitude will decrease.
▪ At the position of maximum amplitude, the metal object is located below the center of the
sensor. The indicator (g) will be displayed on the screen. At the same time, the yellow or red
lights will lit up and a steady tone sounds.
▪ The accuracy of the depth value is relative to the shape and material of the object measured
and to the property of the surrounding medium of the object.
▪ When the measured object is the normal rebar of diameter 18mm, the accuracy of the depth
value is the best. The depth value is only a general reference value.
7.6 Detecting wooden objects
▪ Press the wood detection button (6) to enter the “exact” mode of detecting wood. The
detection wood pattern and exact mode symbol (j) will appear on the display.
▪ To calibrate, place the detector onto the surface without moving the device. Perform a short
press on the wood detection button (6). Wait for the green light to be lit, the measuring tool
is now calibrated.
▪ To switch from exact mode to deep mode, perform a long press on wood button (6).
▪ Perform the detection test, moving in the same direction. When the measuring tool is close
to the edge of a wooden object the signal intensity symbol will be displayed on the screen.
The center icon (g) will appear, yellow or red light will light up and the buzzer will make a “di
di di” sound.
