Ambient Conditions - PEWA Benning MM7 Instrucciones De Servicio

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selected ("RANGE" disappears from display).

5.1.6

In the rotating-switch functions V, mA and A, the "REL" button  has

a peak-holding function. By pressing it several times, the "peak MAX"

and "peak MIN" values are shown alternately. When the button is

pressed for 2 sec. it switches back to normal mode. Before switching

on the peak hold function, calibrate the unit. To do this, short-circuit

the tips of the measuring leads and keep the button pressed until

"CAL" appears in the display. With AC, no polarity is shown. In all

the other switch positions (Ω, Hz,

relative-value function. When the button is pressed, the measurement

value applied is stored and the difference (offset) between this and the

following values displayed. When it is pressed again, the stored value

is displayed with a flashing "REL" symbol. When the button is pressed

for 2 sec., the unit switches back into the normal mode.

5.1.7

The "MIN/MAX" button  function records and stores the highest and

lowest measurements automatically. By pressing the button several

times, the following values are shown: Flashing display "MAX/MIN"

shows the current measurement value, "MAX" shows the highest value

stored and "MIN" the lowest value stored. When the button is pressed

for 2 sec. the unit switches back to normal mode. Functional standby is

possible only in "RANGE" mode.

5.1.8

"HOLD" - storage of measurement reading: When the "HOLD" button  is

pressed, the measurement reading is stored in the memory. The symbol

"HOLD" appears in the display at the same time. When the button is

pressed a second time, the unit switches back to measurement mode.

5.1.9

The yellow button  switches the display illumination on. To switch it off,

press the yellow button again.

5.1.10 When the rotating switch is at V, mA and A, the blue button 

switches between DC and AC operation. In position Ω, it switches

from resistance measurement to continuity testing and when pressed

another time, to diode testing. In switch position Hz, it switches from

frequency measurement to RPM mode. The RPM mode is equivalent

to a mathematical conversion from Hz (cycles per second) to RPM

(rotations/cycles per minute). 1 Hz is equivalent to 60 r.p.m. (rotations/

cycles per minute).

5.1.11

The nominal measurement rate of the BENNING MM 7 is 2

measurements per sec. for the digital display and 12 measurements

for the bar graph display.

5.1.12 The BENNING MM 7 is switched on and off by the rotating switch .

Switch-off position "OFF".

5.1.13 The BENNING MM 7 switches off automatically after approx. 30 minutes

(APO, Auto-Power-Off). It switches back on again when the HOLD

button (or another button, apart from the yellow button) is pressed. A

buzzer is heard 15 sec. before it switches off automatically.

5.1.14 Temperature coefficient of measurement value: 0.15 x (stated

measurement accuracy)/ °C < 18 °C or > 28 °C relative to the value at

the reference temperature of 23 °C.

5.1.15 The BENNING MM 7 is powered by one 9-V block battery (IEC 6 LR

61).

5.1.16 When the battery voltage drops beneath the specified operating voltage

of the BENNING MM 7, the low battery symbol appears in the display.

5.1.17 The life span of a battery is approx. 300 hours (alkali battery).

5.1.18 Dimensions:

(L x W x H) = 180 x 88 x 33.5 mm without protective rubber holster

(L x W x H) = 188 x 94 x 40 mm with protective rubber holster

Weight:

300 g without protective rubber holster

440 g with protective rubber holster

5.1.19 The safety test leads are 4 mm plug-type leads. The safety test

leads are expressly suitable for the rated voltage and power of the

BENNING MM 7.

5.1.20 The BENNING MM 7 is protected against mechanical damage by a

protective rubber holster . The protective rubber holster  makes it

possible to suspend the BENNING MM 7 during the measuring process

or to stand it upright.