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i) Non-contact voltage test “NCV”
Make sure that all measuring sockets are unoccupied. Please remove all measuring leads and
adapters from the measuring device.
This function only serves as an aid. Prior to performing work on these cables, you have to perform
contact measuring operations to check for the absence of voltage.
• Test this function beforehand on a known AC voltage source.
• Turn the digital multimeter on and select measuring range “NCV” with the rotary switch (5). You will see the word
“OL” and on the LC display (4).
• Guide the measuring device with the sensor area (2) towards to position to be tested at a distance of max. 5 mm. In
case of twisted cables, it is recommended to check the cable at a length of approx. 20 to 30 cm.
• In case an AC voltage is detected, an acoustic signal will sound (beeping). The NCV indicator will be on together
with four horizontal bars
.
•
One bar “-”symbol indicates the intensity of the electric field. The more bars “-” are displayed, the higher the electric
field intensity is. The faster the beeps are sounded, the stronger the electric field/voltage is. When you move closer
to a field source, the beeping accelerates, if you move away, the beeping slows down.
•
After you finish measuring, turn the digital multimeter off. Turn the rotary switch to the position “OFF”.
11. Cleaning and maintenance
Never operate the measurement device when it is open.
RISK OF FATAL INJURY!
a) General
• To ensure the accuracy of the multimeter over an extended period of time, it should be calibrated once a year.
• Apart from occasional cleaning and fuse replacements, the multimeter requires no servicing.
• Information on changing the battery and fuse appears below.
Regularly check the technical safety of the instrument and measuring lines, e.g. check for damage
to the housing or squeezing etc.
b) Cleaning
Live components may be exposed if covers are opened or parts are removed. The connected lines
must be disconnected from the measuring device and all measuring objects prior to cleaning or
repairing the device. Switch the digital multimeter off.
• Do not use any carbon-containing cleaning agents or petrol, alcohol or the like to clean the product.
