02/ 2011
BENNING CM 1-3
11
-
polarity indication
-
decimal point
- symbol for discharged battery
- measurement reading retained (hold function)
- selected continuity test with buzzer
4
HOLD button
(hold function)/ change-over button (diode and continuity test)
5
VoltSensor key
, for determining AC voltage to earth,
6
COM jack
, common jack for voltage/ resistance measurements, continuity
and diode tests,
7
Jack
(positive
1
), for V and Ω
8
Bulge for current clamp
, protects against contact with conductor,
9
Open fork
for inserting and gripping the single conductor containing AC
current.
J
LED, for voltage indicator
1
) This is what the automatic polarity indication for DC voltage refers to
5. General information
5.1 General information on the current clamp multimeter
5.1.1 The digital display
3
is a 3½-digit LC display with a font size of 15 mm
and a decimal point. The highest numerical value to be displayed is
1999.
5.1.2 The polarity indication
3
works automatically. Only a polarity contrary
to the jack definition is indicated with „-“.
5.1.3 The range exceedance is indicated by „OL“ or „-OL“ and partly by an
acoustic warning.
Attention, no indication and warning in case of overload!
5.1.4 Measured value storage “HOLD“: Press the “HOLD“ key
4
to store the
measuring result. At the same time, the display shows the “H“ symbol.
Press the key again to switch back to the measuring mode.
5.1.5 The nominal measuring rate of the BENNING CM 1-3 is 1.5 measure-
ments per second.
5.1.6 The BENNING CM 1-3 is switched off automatically after approx.
10 minutes. It can only be switched on again by switching the rotating
switch off and on again.
5.1.7 Temperature coefficient of the measured value: 0.2 x (stated measuring
accuracy)/ °C < 18 °C or > 28 °C, related to the value for the reference
temperature of 23 °C.
5.1.8 The BENNING CM 1-3 is supplied by means of two 1,5 V micro bat-
teries (IEC 6 LR 03).
5.1.9 If the battery voltage falls below the specified operating voltage of the
BENNING CM 1-3, a battery symbol appears on the display.
5.1.10 The battery life is approx. 250 hours (alkaline battery).
5.1.11 Dimensions of the BENNING CM 1-3: (L x W x H) = 190 x 60 x 40 mm
Weight: 265 g
5.1.12 The enclosed safety measuring leads are explicitly intended for the
nominal voltage and the nominal current of the BENNING CM 1-3.
The measuring tips can be protected by caps and can be clipped onto
the underside of the unit for easier transport and for certain measuring
tasks.
5.1.13 Fork opening: 16 mm
6. Ambient conditions
- The BENNING CM 1-3 is intended for measurements under dry ambient
conditions,
- Maximum barometric height for measurements: 2000 m,
- Overvoltage category / installation category: IEC 60664-1/ IEC 61010-1 →
600 V category IV; 1000 V category III
- Contamination class: 2,
- Protection category: IP 30 (DIN VDE 0470-1 IEC/ EN 60529)
3 - first index: protection against access to dangerous parts and protection
against solid impurities of a diameter > 2.5 mm
0 - second index: no protection against water
- Operating temperature and relative air humidity:
For operating temperatures from 0 °C to 30 °C: relative air humidity lower
than 80 %,
For operating temperatures from 31 °C to 40 °C: relative air humidity lower
than 75 %,
For operating temperatures from 41 °C to 50 °C: relative air humidity lower
than 45 %,
- Storage temperature: The BENNING CM 8 can be stored at temperatures
between - 20 °C and + 60 °C (air humidity 0 to 80 %). During storage, the
battery should be removed.
