Device Description; General Information - Benning CM 1-1 Instrucciones De Servicio

4.

Device description

See figure 1a, 1b:
The display and operating elements shown in figures 1a and 1b are designated
as follows:
1 Digital display, displaying measured value and range exceedance
2 Polarity indication,
3 Battery indication, appears in case of discharged battery,
4 HOLD key, storage of the displayed measured value,
5 MAX key, storage of the highest measured value,
6 Key (change‑over), for selecting AC voltage/ DC voltage or resistance
measurement/ continuity test
7 Sliding switch, for selecting the measuring function,
8 Jack (positive
9 COM jack, common jack for voltage/ resistance measurements and conti-
nuity test,
J Opening lever, for opening and closing the current clamp,
K Bulge for current clamp, protects against contact with conductor,
L Measuring clamp, for clamping on the single-wire live conductor,
This is what the automatic polarity indication for DC voltage refers to
1)
5.

General information

5.1 General information on the current clamp multimeter
5.1.1 The digital display 1 is a 3½-digit LC display with a font size of 14 mm
and a decimal point. The highest numerical value to be displayed is
2000.
5.1.2 The polarity indication 2 works automatically. Only a polarity contrary
to the jack definition is indicated with "-".
5.1.3 The range exceedance is indicated by " 0L" or "- 0L" 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 MAX key function 5 automatically determines and stores the high-
est measured value. By pressing the key, the following values are dis-
played:
"MAX" shows the highest stored value. The continuous determination of
the MAX value can be stopped or started by pressing the "HOLD" key
4 . Press the "MAX" key to switch back to normal mode.
5.1.6 Press the 6 V~/ V or Ω/
sliding switch position (see indication on the display).
5.1.7 The nominal measuring rate of the BENNING CM 1-1 is 2.5 measure-
ments per second for the digital display. The nominal measuring rate of
the BENNING CM 1-2 is 1.5 measurements per second for the digital
display.
5.1.8 The BENNING CM 1-1/ 1-2 can be switched on or off by means of the
sliding switch 7 . Switched off: position "OFF".
5.1.9 The BENNING CM 1-2 is switched off automatically after approx. 10
minutes (APO, Auto-Power-Off). It is switched on again if a key or the
sliding switch is operated. A buzzer tone indicates that the device is
switched off automatically. The BENNING CM 1-1 is not provided with
an APO function.
5.1.10 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.
5.1.11 The BENNING CM 1-1 is supplied by means of a 9 V block battery (IEC
6LR61).
The BENNING CM 1-2 is supplied by means of two integrated 1.5 V
micro (AAA) batteries (IEC LR 03).
5.1.12 If the battery voltage falls below the specified operating voltage of the
BENNING CM 1-1/ 1-2, a battery symbol appears on the display.
5.1.13 The battery life is approx. 580 hours for the BENNING CM 1-1 and ap-
prox. 200 hours for the BENNING CM 1-2 (alkaline battery).
5.1.14 Dimensions of the BENNING CM 1-1:
(L x W x H) = 180 x 70 x 42 mm
Weight: 200 g
Dimensions of the BENNING CM 1-2:
(L x W x H) = 190 x 70 x 38 mm
Weight: 225 g
5.1.15 The enclosed safety measuring leads are explicitly intended for the
nominal voltage and the nominal cuurent of the BENNING CM 1-2.
5.1.16 Largest clamp opening: 30 mm
02/ 2018
Device front
), for V and Ω
1
BENNING CM 1-1/ 1-2
key to select the secondary function of the
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