Measuring With The Benning It; Preparations For Measuring - Benning IT 101 Bedienungsanleitung

AC conversion:
The AC conversion is capacity-coupled (AC-coupled), TRUE RMS behaviour,
calibrated against a sinusoidal signal. In case of non-sinusoidal curves the
display value becomes less precise. Thus an additional error results for the
following crest factors:
Crest factor from 1.4 to 2.0 additional errors + 1.0 %
Crest factor from 2.0 to 2.5 additional errors + 2.5 %
Crest factor from 2.5 to 3.0 additional errors + 4.0 %
7.2 Insulating resistance measuring ranges
(switch setting MΩ, 50 V/ 100 V/ 250 V/ 500 V/ 1000 V)
Measuring range
4 MΩ
40 MΩ
400 MΩ
4000 MΩ
4.1 GΩ ... 20 GΩ
Minimum / maximum resistance depending on the testing voltage:
Testing voltage
50 V
100 V
250 V
500 V
1000 V
Accuracy of testing voltage: - 0 %, + 20 %
Short-circuit current: 1 mA (nominal)
Automatic discharge function: discharging time < 1 sec. for C < 1 µF
Max. capacitive load: operational for loads of up to 1 µF
Detection of a connected electric circuit: if > 30 V AC/ DC, then 
7.3 Resistance measuring range (Low-resistance range) (switch setting Ω)
Measuring range
40 Ω
400 Ω
4000 Ω
40 kΩ
* < 1 Ω additional 3 digits
Test voltages: > 4 V and 8 V
Short-circuit current: > 200 mA
Detection of a connected electric circuit: if > 2 V AC/ DC, then 
8.

Measuring with the BENNING IT 101

8.1 Preparations for measuring

Operate and store the BENNING IT 101 only at the specified storage and oper-
ating temperatures. Avoid continuous insulation.
- Check the nominal voltages and nominal current on the safety measuring
leads. The nominal voltage and current ratings of the safety measuring
leads included in the scope of delivery correspond to the ratings of the
BENNING IT 101.
- Check the insulation of the safety measuring leads. Dispose of the safety
measuring leads immediately if the insulation is damaged.
- Check the safety measuring leads for continuity. If the conductor in the
safety measuring lead is interrupted, the safety measuring leads must be
dispose of immediately.
- Before a different function is selected by means of the rotary switch J, the
safety measuring leads must be disconnected from the measuring point.
- Strong sources of interference in the vicinity of the BENNING IT 101 might
lead to unstable readings and measuring errors.
02/ 2011
Resolution
0.001 MΩ ± (1.5 % of the measured value + 5 digits)
0.01 MΩ ± (1.5 % of the measured value + 5 digits)
0.1 MΩ ± (3.0 % of the measured value + 5 digits)
1 MΩ ± (3.0 % of the measured value + 5 digits)
0.1 GΩ ± (10 % of the measured value + 3 digits)
Min. resistance (at 1 mA)
50 kΩ
100 kΩ
250 kΩ
500 kΩ
1 MΩ
Resolution
0.01 Ω ± (1.5 % of the measured value + 5 digits)*
0.1 Ω ± (1.5 % of the measured value + 3 digits)
1 Ω ± (1.5 % of the measured value + 3 digits)
0.01 kΩ ± (1.5 % of the measured value + 3 digits)
BENNING IT 101
Accuracy
Max. resistance
50 MΩ
100 MΩ
250 MΩ
500 MΩ
20 GΩ
Accuracy

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