Maintenance And Calibration - VOLTCRAFT VC 120 Bedienungsanleitung

Maintenance and calibration

In order to guarantee the accuracy of the multimeter for a longer
period of time you should calibrate it once a year. The replacement
of the fuse is described in the chapter "Safety instructions". Clean
the device and the window of the display with a clean, lint-free, anti-
static and dry cleaning cloth.
Do not use cleaning agents that contain carbon or
benzines, alcohol or anything similar to clean the
product since these substances damage the surface
of the measuring instrument. Moreover, these fumes
are hazardous to the health and explosive. Do not
use tools with sharp edges, screwdrivers, metal
brushes or anything similar to clean the device.
Technical specifications and measuring
tolerances
Technical specifications
Display . . . . . . . . . . . . . . . : 3
display value of 1999, with automatic
polarity indication, 12 mm digit height
Max. measuring rate . . . . : 2,5 measurements per second
Max. input current DC . . . : 10 A, for 10 s at the most
Working temperature . . . . : from 0° C to + 40° C
Storage temperature . . . . : from -10° C to +50° C
Relative air humidity . . . . : max. 80 % (up to 31° C), not conden-
sing, linearly decreasing to 50% at the
most (from 31° C to 40° C), not con-
densing
Temperature for
guaranteed accuracy . . . . : +23° C ±5 K
Mass . . . . . . . . . . . . . . . . : approx. 150 g (without accessories)
Dimensions (W X H X D) . : approx. 74x129x39 mm (without lines)
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/ -digit LCD display with a maximum
1
2
- the device was stored under unfavourable conditions for a long
period of time or if
- the device was exposed to extraordinary stress caused by
transport.
• Never turn-on the measuring instrument immediately after it has
been brought from a cold into a warm room. Condensation water
that forms may destroy your device. Leave the device turned-off
until it has reached room temperature.
Application of the multimeter
a) Insertion of the battery – replacement of the battery
Your measuring instrument must be equipped with a 9 Volt battery
to function correctly. When the battery replacement symbol appears
in the display, the battery must be replaced. Proceed as follows:
- Disconnect your measuring instrument from the measuring cir-
cuit,
- remove the instrument leads from the measuring instrument,
- turn it off and
- unscrew the fastening screws at the back (bottom) of the hous-
ing with a suitable screwdriver (for recessed-head screws).
- Now remove the lower shell of the housing (locked at the top)
carefully.
- Disconnect the used battery from the connecting clip and
- replace the battery with a new battery of the same type.
- Insert the connected battery into the battery chamber after
completed replacement of the battery and
- close the measuring instrument carefully. Do not forget the rub-
ber caps.
- Ensure not to squash the cable of the connecting clip
(red/black) when you are closing the measuring instrument.
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