PEWA BENNING MM 8 Instrucciones De Servicio página 18

7.7­ Capacity­ranges
Conditions: D ischarge capacitors and apply according to the specified polar-
ity.
Overload protection for capacity measurements: 600 V
Measuring range
6 nF
60 nF
600 nF
6 µF
60 µF
600 µF
6 mF
7.8­ Frequency­ranges
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.­ Making­measurements­with­the­BENNING­MM­8/­9/­0
8.­­Preparations­for­making­measurements
Operate and store the BENNING MM 8/ 9/ 10 only at the specified storage and
operating temperatures conditions. Avoid continuous insulation.
- C heck rated voltage and rated current details specified on the safety meas-
uring lines. The nominal voltage and current ratings of the safety measuring
cables included in the scope of delivery correspond to the ratings of the
B ENNING MM 8/ 9/ 10.
- C heck the insulation of the safety measuring cables. Discard the safety
measuring cables immediately if the insulation is damaged.
- C heck safety measuring lines for continuity. If the conductor in the safety
measuring line is interrupted, the safety measuring line must be quaran-
tined immediately.
B efore - at the rotary switch  - a different function is selected, the safety
measuring lines must be disconnected from the measuring point.
- S trong sources of interference in the vicinity of the BENNING MM 8/ 9/ 10
can lead to unstable readings and measuring errors.
8.2­ Voltage­and­current­measurement
Do­not­exceed­the­maximum­permitted­voltage­with­respect­to­

earth­potential!­Electrical­danger!
The highest voltage which may be applied to the jacks,
- COM jack 
- jack for V, Ω, µA,
- j ack for 10 A range  (­BENNING MM 9/ 10)
of the BENNING MM 8/ 9/ 10 against ground, amounts to 1000 V.
Electrical­danger!
Maximum­ circuit­ voltage­ for­ a­ measured­ current­ of­ 500­ V!­ In­ ­

the­case­of­a­safety­triggering­in­excess­of­500­V,­damage­to­the­
appliance­may­be­caused.­A­damaged­appliance­may­represent­
an­electrical­hazard!
11/ 2006
Resolution
1 pF
10 pF
100 pF
1 nF
10 nF
100 nF
1 µF
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 
­ B ENNING­MM­8/­9/­10­
eff
Meas. precision
± (1.9 % of the measured value + 8 digits)
± (1.9 % of the measured value + 8 digits)
± (1.9 % of the measured value + 8 digits)
± (1.9 % of the measured value + 8 digits)
± (1.9 % of the measured value + 8 digits)
± (1.9 % of the measured value + 8 digits)
± (1.9 % of the measured value + 8 digits)
max.
eff

eff
Min. sensitivity
100 mV
eff
100 mV
eff
100 mV
eff
250 mV
eff
1 V
eff
.
eff
6