07/ 2016
BENNING MM 12
23
Note on replaceable parts:
-
The BENNING MM 12 contains fuses for overload protection:
One fuse rated current 11 A fast-acting (1000 V), 20 kA, D = 10.3 mm, L = 38.1 mm (part
no. 10016656) and one fuse rated current 440 mA fast-acting (1000 V), 10 kA, D = 10 mm,
L = 34.9 mm (part no. 10016655).
-
The BENNING MM 12 is supplied by means of four integrated 1.5 V mignon batteries (IEC
LR6/ type AA).
-
The above mentioned safety measuring leads (tested accessories) are approved in accor-
dance with CAT III 1000 V/ CAT IV 600 V and are approved for a current of 10 A.
4. Description of unit
See figure 1: Front panel
The display and operating elements shown in Fig. 1 are as follows:
1
Digital display
, for the measurement value, bar graph and display for overrange indication
2
Sub-display
3
Polarity indication
4
Battery condition indicator
5
RANGE respectively function key
RANGE
(up/ ▲), switchover between automatic and manual measuring range
Function
(down/ ▼), selects the secondary, third or fourth function
6
HFR respectively Bluetooth
®
key
HFR
(up/ ▲), high-frequency suppression (low-pass filter)
Bluetooth
®
(down/ ▼), activation of the Bluetooth
®
interface
7
Cursor key
, menu control (up/ ▲, down/ ▼, right/ ►, left/ ◄)
8
ENTER respectively CANCEL key
ENTER
(up/ ▲), confirms the function
CANCEL
(down/ ▼), terminates the function
9
A HOLD respectively P HOLD key
A HOLD
(up/ ▲), Auto HOLD, automatic measured value storage
P HOLD
(down/ ▼), Peak HOLD, peak value storage
J
Rotating switch
, for selecting measurement function
K
Socket
(positive
1
), for V, Ω,
, Hz,
L
COM socket
, common socket for current, voltage, resistance, frequency, temperature,
capacity measurement, continuity and diode testing
M
Socket
(positive
1
), for mA range, for currents up to 400 mA
N
Socket
(positive
1
), for 10 A range, for currents up to 10 A
O
Protective rubber holster
P
Optical interface
, for accommodating the adapter located on the data cable
Q
Light sensor for LC display illumination
1
)
The automatic polarity display for DC current and voltage refers to this.
5. Multimeter functions
5.1 General data
5.1.1
The digital display
1
is designed as a 3¾ or 4¾ digit liquid crystal indicator with 15
mm digit height and decimal point. The highest value displayed is 4.000/ 40.000.
5.1.2
The bar graph display consists of 40 segments.
5.1.3
The polarity indication
3
functions automatically. Only a polarity contrary to the socket
definition is indicated as “-“.
5.1.4
The range overload will be displayed with “OL” or “- OL” and sometimes with an
acoustic signal.
Attention: No indication and prior warning in the event of an overload condition! A
exceeding of dangerous contact voltage (> 60 V DC/ 30 V AC rms) is indicated by an
additional flashing symbol „
“.
5.1.5
The BENNING MM 12 confirms each button press with a signal sound. Invalid button
presses are confirmed by a double signal sound. In the event of an incorrect circuit of
the jack for the mA
M
/ A range
N
BENNING MM 12 warns with a signal sound and
the indication of ProbE in the display
1
The acoustic signal and the indication ProbE in the display
1
extinguish if a safety
measuring lead is plugged into the jack for the mA
M
/ A range
N
and the correspon-
ding current measurement range was selected by means of the rotary switch
J
.
In case of a defective fuse, the BENNING MM 12 emits an acoustic warning signal and
“FUSE” is shown on the display
1
.
5.1.6
The nominal measurement rate of the BENNING MM 12 is 10 measurements per
second (sec) for the digital display.
5.1.7
The BENNING MM 12 is switched on and off by the rotating switch
J
. Switch-off
position “OFF”.
5.1.8
The BENNING MM 12 switches off automatically after approx. 10 minutes (
APO
,
A
uto-
P
ower-
O
ff). It will switch on again as soon as a key is pressed or the rotating
switch is operated. The switch-off can be adjusted individually in the setup menu (see
section 5.3.5).
5.1.9
Temperature coefficient of measurement value: 0.1 x (stated measurement accuracy)/
°C < 18 °C or > 28 °C, relative to the value at the reference temperature of 23° C.
5.1.10
The BENNING MM 12 is powered by four 1.5 V mignon batteries (IEC LR6/ type AA).
5.1.11 The battery indication
4
continuously shows the remaining battery capacity via a
maximum of three segments.
