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Benning MM 4 Manual

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09/ 2013
BENNING MM 4
11
(REL ∆),
- the selected measuring range through display of extended / non-
extended measuring units of voltage, current and resistance,
- the selected continuity test with buzzer,
- the selected diode test.
4 Blue function button: the following symbols appear for this in the digital
display 3: “DC”; “AC”; “Ω”, “V”; „ “ or „ “
- Selection between DC-voltage and AC-voltage measurement or
- resistance measurement, continuity and diode test,
- or when button pressed for 2 sec. (in sliding-switch position ACV / DCV)
alternating current (Amp).
- Measurement of temperature (°C, °F), relative humidity (%), capacity
(µF), carbon monoxide (ppm), wind speed (m/s), illumination intensity
(k lux) are not possible with the BENNING MM 4.
- Repeat press for 2 sec. returns to voltage measurement
5 HOLD / REL button (hold function)
- First press of button causes indicated measuring value to be held (indi-
cated by ‘Hold’ in digital display 3, no updating of measured value),
- repeat press of button causes return to continuous measurement function.
- Relative-value function becomes effective when button pressed for 2
sec. The value currently being measured is stored and the difference
(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 transducer,
(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
eff
to 300 A
eff
(direct display, 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
… 17 …


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