measuring lead to the jack of the BENNING MM 5-1/ MM 5-2 and press
the key (blue) 4 of the BENNING MM 5-2 to switch over to frequency mea-
surement (Hz).
-
For frequency measurement in the current range, connect the red safety
measuring lead to the jack L of the BENNING MM 5-2 and press the key
(blue) 4 (press twice) to switch over to frequency measurement (Hz).
-
Remember the minimum sensitivity for frequency measurements using the
BENNING MM 5-1/ MM 5-2!
-
Contact the measuring points with the safety measuring leads
and read the measurement result on the digital display on the
BENNING MM 5-1/ MM 5-2.
See fig. 10:
8.8 Temperature measurement (BENNING MM 5-2)
-
With the rotating switch , select the desired function ( ) on the
BENNING MM 5-2
-
Press the blue key 4 to switch over to °F or °C.
-
Connect the temperature sensor (type K) to the COM jack and to the jack
observing correct polarity.
-
Place the contact point (end of the sensor lead) on the point to be
measured. Read the measurement value on the digital display of the
BENNING MM 5-2.
See fig. 11:
8.9 Voltage indicator
The voltage indicator function is not intended for testing the
absence of voltage. Even without an indication or acoustic
signal, a dangerous contact voltage might be applied. Electrical
danger!
The voltage indicator function is possible from each position of the rotary switch
(except for switch position "OFF"). No measuring lines are required as voltage
indicator (non-contact detection of an alternating field). The detector is located
on the top side of the BENNING MM 5-1/ MM 5-2. Press the "VoltSensor" key 5
and the measured value indication disappears. If a phase voltage is localized,
the red LED N lights up and the symbol is shown on the display.An indication
is made in earthed AC current networks only! The phase can be determined by
means of a single-pole measuring line.
Practical hint:
Interruptions (cable breaks) in cables lying around openly such as e.g. cable
reels, fairy lights etc. can be traced from the feeding point (phase) to the point
of interruption.
Functional range: ≥ 230 V
See figure 12:
8.9.1
Phase test
-
Connect the red safety measuring lead to the jack for of the
BENNING MM 5-1/ MM 5-2.
-
Bring the safety measuring line into contact with the measuring point of the
system part and press the „VoltSensor" key 5 .
-
If the red LED N lights up and the symbol is shown on the display, the
phase of an earthed alternating voltage is applied to this measuring point
(system part).
9.
Maintenance
Before opening the BENNING MM 5-1/ MM 5-2, ensure that it is
not connected to a source of voltage! Electrical hazard!
Any work required on the BENNING MM 5-1/ MM 5-2 when it is under voltage must
be done only by a qualified electrician. Special steps must be taken to prevent
accidents. Before opening the BENNING MM 5-1/ MM 5-2, remove it from all sources
of voltage as follows:
-
First remove both safety measuring leads from the measurement points.
-
Remove both safety measuring leads from the BENNING MM 5-1/ MM 5-2
-
Turn the rotating switch to "OFF".
9.1 Securing the unit
Under certain circumstances, the safety of the BENNING MM 5-1/ MM 5-2 can
no longer be guaranteed. This may be the case if:
-
there are visible signs of damage on the unit,
-
errors occur in measurements,
-
the unit has been stored for a long period of time under the wrong conditions, and
-
if the unit has been subjected to rough handling during transport.
10/ 2015
Frequency measurement
Temperature measurement
Voltage indicator
BENNING MM 5-1/ 5-2
27