07/ 2016
BENNING MM 12
24
As soon as all segments of the battery symbol have disappeared and
the battery symbol is flashing, the batteries must be replaced by new
ones immediately in order to prevent danger for persons due to incorrect
measurements.
5.1.12
The life span of a battery is approx. 50 hours (alkali battery).
5.1.13
Appliance dimensions:
(L x W x H) = 200 x 87 x 40 mm without protective rubber holster
(L x W x H) = 206 x 94 x 54 mm with protective rubber holster
Appliance weight:
480 g without protective rubber holster
640 g with protective rubber holster
5.1.14
The safety measuring leads supplied are expressly suited for the rated voltage and the
rated current of the BENNING MM 12.
5.1.15
The BENNING MM 12 is protected against mechanical damage by a protective rub-
ber holster
O
. The protective rubber holster
O
makes it possible to suspend the
BENNING MM 12 during the measuring process or to stand it upright.
5.1.16
The BENNING MM 12 has an optical interface
P
on the top side. This is used for the
galvanic isolation of the measuring signal to a PC/ laptop. The enclosed data cable is
used for the transmission of measuring data and is equipped with a USB 2.0 compa-
tible connection.
5.1.17
The BENNING MM 12 supports wireless data transmission via the Bluetooth
®
4.0
standard to an Android or IOS device (smartphone/tablet).
5.2 Key functions
The operating keys
5
,
6
,
8
and
9
are provided with a double function and can be pressed
upwards/ ▲ and downwards/ ▼.
5.2.1
The
RANGE
key
5
(up/ ▲) can be used to change over to the manual measuring
ranges and to hide “AUTO” on the display at the same time. Press the key for approx.
2 seconds to activate the automatic range selection (“AUTO” on the display).
5.2.2
Press the
Function
key
5
(down/ ▼) to select the secondary, third or fourth function
of the rotary switch position:
Rotary switch position:
Secondary function:
Third / fourth function:
V AC
Hz
mV AC
Hz
V DC
V AC + DC
mV DC
mV AC + DC
Ω
/
A AC
A DC
A AC + DC/ Hz
5.2.3
The
HFR
key
6
(up/ ▲) is intended for connecting a
low-pass filter (high-frequency
suppression)
in the V AC and A AC functions in order to filter out high-frequency
pulses e. g. at pulsed motor drives. “HRF” symbol on the LC display
1
. The limiting
frequency (- 3 dB) of the filter is fg = 800 Hz. When reaching the limiting frequency fg,
the displayed value is lower by a factor of 0.707 than the actual value without filter.
without HRF (without low-pass filter)
with HRF (with low-pass filter)
In order to prevent any danger, always measure a present voltage first
without low-pass filter (high-frequency suppression) to detect a dangerous
voltage.
5.2.4
Press the
Bluetooth
®
key
6
(down/ ▼) to activate the
Bluetooth® interface
with
the symbol shown on the LC display
1
at the same time.
5.2.5
Press the
Cursor
key
7
(up/ ▲, down/ ▼, right/ ►, left/ ◄) to select the menu func
-
tion on the LC display
1
.
5.2.6
Press the
ENTER
key
8
(up/ ▲) to confirm the selected function.
5.2.7
Press the
CANCEL
key
8
down/ ▼) to terminate a selected function.
5.2.8
Press the
A-HOLD
key
9
(up/ ▲) (automatic storage of measured values) to store
the displayed values on the secondary display
2
. The “Auto HOLD” symbol simulta
-
