Frequency Ranges; Measuring With The Benning Mm - Benning MM 9 Instrucciones De Servicio

7.8 Frequency ranges

Overload protection in the case of frequency measurements: 600 V
Meas.
resolution
range
6 kHz 1 Hz
60 kHz 10 Hz
600 kHz 100 Hz
6 MHz 1 kHz
60 MHz 10 kHz
The minimum sensitivity for frequencies below 20 Hz is 1.5 V
8.

Measuring with the BENNING MM 9/ 10

8.1 Preparations for measuring
Operate and store the BENNING MM 9/ 10 only at the specified storage and
operating temperatures conditions. Avoid continuous insulation.
- Check rated voltage and rated current details specified on the safety mea-
suring leads. The nominal voltage and current ratings of the safety measur-
ing leads included in the scope of delivery correspond to the ratings of the
BENNING MM 9/ 10.
- Check the insulation of the safety measuring leads. Discard the safety
measuring leads immediately if the insulation is damaged.
- Check safety measuring leads for continuity. If the conductor in the safety
measuring lead is interrupted, the safety measuring lead must be quaran-
tined immediately.
- Before at the rotary switch  a different function is selected, the safety
measuring leads must be disconnected from the measuring point.
- Strong sources of interference in the vicinity of the BENNING MM 9/ 10 can
lead to unstable readings and measuring errors.
8.2 Voltage and current measurement
Do not exceed the maximum permitted voltage with respect to

earth potential! Electrical danger!
The highest voltage which may be applied to the jacks,
- COM jack 
- jack for V, Ω, µA,
- jack for 10 A range 
of the BENNING MM 9/ 10 against ground, amounts to 1000 V.
Electrical danger!
Maximum circuit voltage for a measured current of 500 V! In

the case of a safety triggering in excess of 500 V, damage to the
appliance may be caused. A damaged appliance may represent
an electrical hazard!
8.2.1 Voltage measuring
- Using the rotary switch  select the required function (V AC) or (V DC) on
the BENNING MM 9/ 10.
- The black safety measuring lead has to be connected to the COM jack 
on the BENNING MM 9/ 10.
- The red safety measuring lead has to be connected to the jack for V, Ω, µA,
, Hz  on the BENNING MM 9/ 10.
- Bring the safety measuring leads into contact with the measuring points, read
the measured value on the digital display  on the BENNING MM 9/ 10.
see figure 2:
see figure 3:
8.2.2 Current measuring
- Using the rotary switch  select the required range and function (A AC) or
(A DC) on BENNING MM 9/ 10.
- The black safety measuring lead has to be connected to the COM jack 
on the BENNING MM 9/ 10.
- The red safety measuring lead has to be connected to the jack for V, Ω, µA,
, Hz  (direct currents on the 6 mA) or to the jack for the 10 A range 
(direct or alternating currents up to 10 A) on the BENNING MM 9/ 10.
- Bring the safety measuring leads into contact with the measuring points, read
the measured value on the digital display  on the BENNING MM 9/ 10.
see figure 4:
see figure 5:
03/ 2011
Meas. precision for 5 V
± (0.01 % of the measuring value + 1 digit)
± (0.01 % of the measuring value + 1 digit)
± (0.01 % of the measuring value + 1 digit)
± (0.01 % of the measuring value + 1 digit)
± (0.01 % of the measuring value + 1 digit)
, Hz 
Direct voltage measurement
Alternating voltage measurement
Direct current measurement
Alternating current measurement
BENNING MM 9/ 10
max. Min. sensitivity
eff
.
eff

eff
100 mV
eff
100 mV
eff
100 mV
eff
250 mV
eff
1 V
eff
16