Benning MM 2 Bedienungsanleitung Seite 17

 COM-Terminal, common return terminal for current, voltage, resistance
measurements, continuity and diode tests,
 Input terminal (positive) for µA/mA range, for currents up to 200 mA,
 Input terminal (positive) for 20 A range, for currents up to 20 A,
 Protective rubber holster
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5. General Specifications
5.1 General specifications for the BENNING MM 2
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.1.8
5.1.9
5.1.10 The lifespan of a battery is approx. 300 hours (Alkaline battery).
5.1.11
5.1.12 The safety test leads provided with the meter are specifically suited for
5.1.13 The BENNING MM 2 is protected from mechanical damage by a pro-
6. Ambient conditions
- The BENNING MM 2 is designed for measuring in dry conditions,
- Altitude during measuring: 2000m maximum
- Overvoltage category/ Location category: IEC 60664-1/ IEC 61010-1 →
600 V category III,
- Pollution degree: 2,
- Protection Class: IP 30 (DIN VDE 0470-1 IEC/ EN 60529)
IP 30 means: Protection against access to dangerous parts and protection
against solid impurities of a diameter > 2.5 mm, (3 - first index). No protec-
tion against water, (0 - second index).
- Working temperature and relative humidity:
for working temperature between 0 °C and 30 °C: relative humidity smaller
than 80 %
for working temperature between 30 °C and 40 °C: relative humidity smaller
than 75 %
for working temperature between 40 °C and 50 °C: relative humidity smaller
than 45 %
- Storage temperature: the BENNING MM 2 can be stored at temperatures
between - 20 °C and + 60 °C. The battery should be removed when tester
is in storage.
7. Electrical specifications
Note: measurement accuracy is given as the sum of
-
-
This accuracy is valid for temperatures between 18 °C and 28 °C, with a relative
humidity smaller than 75 %.
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) the automatic polarity display for direct and alternating current refers to this terminal
The digital display is a 3½ digit liquid crystal display with 20 mm digit
height and automatic decimal point placement. The highest display
value is 1999.
The polarity display  is automatic. As positive is implied by the
defined input terminal, only a negative pole will be indicated with "-".
Overranging is indicated by a blinking "1" or "-1".
The measuring rate of the BENNING MM 2 is a nominal 2,5 readings
per second rate.
The BENNING MM 2 is turned on and off using the rotary switch .
Unit is turned off when switch is in "OFF" position.
The BENNING MM 2 powers off automatically after approx. 30 min-
utes. It can be powered on again by turning the rotary switch  to
select another range.
Temperature coefficient of the measurement reading: 0.15 x (given
accuracy)/ °C , < 18 °C or > 28 °C.
The BENNING MM 2 is powered by a 9 V block battery (IEC 6 LR 61).
When the battery voltage drops below the operating voltage of the
BENNING MM 2 a low battery symbol appears in the display.
Meter dimensions:
(L x W x H) = 175 x 84 x 31 mm without protective rubber holster
(L x W x H) = 192 x 95 x 50 mm with protective rubber holster
Meter weight:
340 g without protective rubber holster
550 g with protective rubber holster
the rated voltage and current of the BENNING MM 2. The probe tips
can be covered with protective caps.
tective rubber holster . The protective rubber holster  allows the
BENNING MM 2 to be placed upright or hung up during measuring.
a relative percentage of the reading and
the number of least significant digits
BENNING MM 2

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