BENNING MM 3 044029 - Инструкция по эксплуатации - Страница 20

05/ 2020 

BENNING MM 3

12





Polarity display

,



Battery indicator

, appears when the battery is low,



Selector switch

 for direct voltage (DC) or alternating voltage (AC),



Rotary switch

 for function and range selection



Terminals

 for capacitance measurements



Input terminal

 (positive

1

) for V, W and Hz,



COM-Terminal

, common return terminal for current, voltage, resistance 

and frequency measurements, continuity and diode tests,



Input terminal

 (positive) for mA/mA range, for currents up to 200 mA,



Input terminal

 (positve) for 20 A range, for currents up to 20 A, 



Protective rubber holster

1

)  the automatic polarity display for direct and alternating current refers to this terminal

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