Phoenix Contact TESTFOX M, Operating Manual

Page: 23 / 142

15

2 A 1 mA ± (1.5 % of the measured value + 5 digits) max. 2 V
10 A
*2
10 mA ± (1.5 % of the measured value + 5 digits) max. 2 V
The measured value is obtained by mean value rectification and is displayed
as r.m.s. value.
*1
The measuring accuracy is specified for a sinusoidal curve. In case of non
sinusoidal curves, the accuracy of the displayed value decreases. thus, an
additional error results for the following crest factors:
Crest factor from 1.4 to 3.0 additional error ± 1.5 %
Crest factor from 3.0 to 4.0 additional error ± 3 %
*2
The maximum permissible operating time is limited from current value ≥ 7 A.
measuring value max. measuring time min. pause time
10 A 4 min. 10 min.
9 A 5 min. 10 min.
8 A 7 min. 10 min.
7 A 10 min. 10 min.
7.5 Resistance measuring range
Overload protection for resistance measurements: 600 V
eff
Measuring
range
*3
Resolution Measuring accuracy
Max. open-circuit
voltage
200 Ω 0.1 Ω ± (0.7 % of the measured value + 3 digits) 1.3 V
2 kΩ 1 Ω ± (0.7 % of the measured value + 3 digits) 1.3 V
20 kΩ 10 Ω ± (0.7 % of the measured value + 3 digits) 1.3 V
200 kΩ 100 Ω ± (0.7 % of the measured value + 3 digits) 1.3 V
2 M Ω 1 kΩ ± (1.0 % of the measured value + 3 digits) 1.3 V
20 M Ω 10 kΩ ± (1.5 % of the measured value + 3 digits) 1.3 V
*3
For automatic range selection (AutO), the change-over point might be
already at a value of 1400!
7.6 Diode and continuity test
the stated measuring accuracy is applies to a range between 0.4 V and 0.8 V.
Overload protection for diode tests: 600 V
eff
The integrated buzzer sounds at a resistance R lower than 25 Ω.
Measuring
range
Reso-
lution
Measuring accuracy
Max. measuring
current
Max. open-
circuit voltage
10 mV ± (1.5 % of the measured value + 5 digits) 1.5 mA 2.0 V
7.7 Capacity ranges ( teStFOX M-1)
Conditions: Discharge capacitors and apply them according to the specified
polarity.
Overload protection for capacity measurements: 600 V
eff
Measuring range Resolution Measuring accuracy
2 nF 1 pF ± (1.9 % of the measured value + 8 digits)
20 nF 10 pF ± (1.9 % of the measured value + 8 digits)
200 nF 100 pF ± (1.9 % of the measured value + 8 digits)
2 µF 1 nF ± (1.9 % of the measured value + 8 digits)
20 µF 10 nF ± (1.9 % of the measured value + 8 digits)
200 µF 100 nF ± (1.9 % of the measured value + 8 digits)
2 mF 1 µF ± (1.9 % of the measured value + 8 digits)
< 10 digits in case of fluctuating indication
7.8 Frequency ranges ( teStFOX M-1)
Overload protection for frequency measurements: 600 V
eff
Minimum pulse width > 25 ns; operating cycle limitation > 30 % and < 70 %
Measuring
range
Resolution Measuring accuracy for 5 V
eff
max. Sensitivity
2 kHz 1 Hz ± (0.01 % of the measured value + 1 digits) > 1.5 < 5 V
eff
10/ 2008
TESTFOX M/ M–1