General Data; Ambient Conditions - Benning MM 4 Instrucciones De Servicio

(offset) between the next higher or lower value is displayed. A new
reference value can be stored by pressing the button again. Return to
normal mode by pressing button longer (2 sec).
6 RANGE button for manual selection of voltage, current and resistance-
measuring ranges ('RANGE' appears in the digital display)
- The measuring ranges change when button pressed briefly,
- Automatic range selection is set by pressing button longer (i.e. longer
than 2 sec.).
7 COM socket, joint socket for voltage and resistance measurements, conti-
nuity and diode testing, colour black.
8 V-Ω socket (positive), joint socket for voltage and resistance measure-
ments, continuity and diode testing, colour red.
9 Opening lever for opening and closing current clamp.
J Current-clamp grip to guard against accidental conductor contact
K Jaws for gripping the single-wire live AC conductor.
5.

General data

5.1 General data on BENNING MM 4
5.1.1 The digital display is designed as a 3¾ digit liquid-crystal indicator with
11 mm digit height and decimal point. The highest value displayed is
4200.
5.1.2 The polarity indication 3 functions automatically. Only a polarity con-
trary to the socket definition is indicated, as "-".
5.1.3 When the range is exceeded, this is indicated by "OL" or "-OL".
5.1.4 The nominal measuring rate of the digital display of the BENNING MM 4
is approx. 2 measurements per second.
5.1.5 The BENNING MM 4 switches off automatically after approx. 30 min. It
goes on again when the RANGE button 6 is pressed. A buzzer sounds
to indicate automatic switch off.
5.1.6 Temperature coefficient of measurement value: 0.15 x (stated meas-
urement accuracy)/ °C < 18 °C or > 28 °C, with reference to the value
at a temperature of 23 °C.
5.1.7 The BENNING MM 4 is supplied by 2 x 1.5 V batteries (IEC-LRO3 /
'Micro').
5.1.8 When the battery voltage drops beneath the specified operating voltage
of the BENNING MM 4, the battery symbol appears in the display.
5.1.9 The life span of the batteries is approx. 800 hours (alkali battery).
5.1.10 Dimensions:
(L x W x H) = 145 x 52 x 34 mm Multimeter without current trans-
ducer,
(L x W x H) = 225 x 77 x 35 mm Multimeter with current transducer
Weight:
100 g without current transducer
230 g with current transducer
5.1.11 The safety test lead and the test probe are in 4 mm plug-in design. The
safety test lead and the test probe are suitable for the nominal voltage
and nominal current of the BENNING MM 4. The test probe can be
protected by caps.
5.2 General data on current transducer
5.2.1 Current-measuring range: from 0.1 A
5.2.2 Output voltage: the current transducer of the BENNING MM 4 pro-
duces an alternating voltage of 1 mV when the single-wire conductor
which the current transducer is gripping is under an AC current of 0.1
A.
5.2.3 Sensor type: induction coil for alternating current.
5.2.4 Temperature coefficient of measurement value: 0.15 x (stated meas-
urement accuracy)/ °C with reference to the value at a temperature of
23 °C.
5.2.5 Max. apparent resistance at output: 120 Ω
5.2.6 Widest angle of tongs: 30 mm
5.2.7 Greatest conductor diameter 29 mm
5.2.8 Dimensions of current transducer (L x W x H) = 102 x 77 x 35 mm.
Weight of current transducer: 130 g
Note:
The current transducer can only be used for measurements when it is plugged
into the Multimeter.
6.

Ambient conditions

- The BENNING MM 4 is designed only for measuring in dry surroundings,
- Maximum barometric height during measurement: 2000 m.
- Overvoltage category / set-up category: IEC 664/ IEC 1010-1 (2001) →
300 V category III; 600 V category II.
11/ 2008
BENNING MM 4
to 300 A (direct display, A)
eff eff
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