General Specifications; Ambient Conditions; Electrical Specifications - Benning MM 3 Manuel De Instrucciones

 Input terminal (positve) for 20 A range, for currents up to 20 A,
 Protective rubber holster
) the automatic polarity display for direct and alternating current refers to this terminal
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5.

General Specifications

5.1 General specifications for the BENNING MM 3
5.1.1 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.
5.1.2 The polarity display  is automatic. As positive is implied by the
defined input terminal, only a negative pole will be indicated with "-".
5.1.3 Overranging is indicated by "1" or "-1".
5.1.4 The measuring rate of the BENNING MM 3 is a nominal 2,5 readings
per second rate.
5.1.5 The BENNING MM 3 is turned on and off using the rotary switch .
Unit is turned off when switch is in "OFF" position.
5.1.6 The BENNING MM 3 powers off automatically after approx. 30 minutes.
It can be powered on again by turning the rotary switch  to select
another range.
5.1.7 Temperature coefficient of the measurement reading: 0.15 x (given
accuracy)/ °C , < 18 °C or > 28 °C.
5.1.8 The BENNING MM 3 is powered by a 9 V block battery (IEC 6 LR 61).
5.1.9 When the battery voltage drops below the operating voltage of the
BENNING MM 3 a low battery symbol appears in the display.
5.1.10 The lifespan of a battery is approx. 150 hours (Alkaline battery).
5.1.11 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
5.1.12 The safety test leads provided with the meter are specifically suited for
the rated voltage and current of the BENNING MM 3. The probe tips
can be covered with protective caps.
5.1.13 The BENNING MM 3 is protected from mechanical damage by a pro-
tective rubber holster . The protective rubber holster  allows the
BENNING MM 3 to be placed upright or hung up during measuring.
6.

Ambient conditions

- The BENNING MM 3 is designed for measuring in dry conditions,
- Altitude during measuring: 2000 m maximum
- Overvoltage category/ Location category: IEC 60664-1/ IEC 61010-1 →
300 V category III, 600 V category II,
- 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 3 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
- a relative percentage of the reading and
- the number of least significant digits
This accuracy is valid for temperatures between 18 °C and 28 °C, with a relative
humidity smaller than 75 %.
09/ 2013
BENNING MM 3
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