Chapter II
28
Portable digital multimeter
5.3. DC
current
Selector
switch
Accuracy
Max. voltage
drop
Protection
Fuses
∗
Resolution
5 mA
1 µA
50 mA
700 mV
10 µA
500 mA
0.2 % R + 2 D
1.5 V
F1 + F2
100 µA
10 A
∗∗
0.5 % R + 5 D
500 mV
600 V
RMS
F2
10
mA
∗
refer to fuse specifications section 6.1.1.
∗∗
acceptance overload: 20 A during 30 s. max. observing a break > 5 min between 2 tests
Number of count : 5000
Additional error in Pk +/- mode for a pulse width of
≥
1 ms : 1 % R
±
50 D
For measurements performed on alternative signals, the selected range must tally with the max.
value of the signal peak.
5.4.
AC currents (AC and AC + DC)
Accuracy
40 Hz to
5 kHz
5 kHz to
20 kHz
20 kHz
to 30kHz
Ranges
5 % to 100 % of range
Protect.
Fuses
∗
Resol.
Max.
Crest
Max.
voltage
drop
5 mA
1%R+3D
1.5% typ. 4% typ.
1 µA
10 mA
50 mA
1.5% typ. 4% typ.
10 µA
100 mA
700 mV
500 mA
1%R +3 D
1.5% typ. 4% typ.
F1 + F2
100 µA
1 A
1.5 V
10 A
∗∗
1.5%R+3 D
Æ
2 kHz
1.5% typ.
///////////
600
V
RMS
F2
10 mA
30 A
500 mV
∗
refer to fuse specifications section 6.1.1.
∗∗
acceptance overload: 20 A during 30 s. max. observing a break > 5 min between 2 tests
Specification :
from 5 % to 100 % of the range
Number of count :
5000
Additional error according to crest factor :
0 % for a crest factor < 1.5
1 % for a crest factor of 1.5 to 2
4 % for a crest factor of 2 to 3
Additional error in I
AC+DC
with a direct current at input : 1 %
5.5.
Resistance / Continuity
Ranges
Accuracy
Measur.
current
Protection
∗
Resolution
500
Ω/
0.1% R + 5 D
1 mA
100 m
Ω
5
k
Ω
100 µA
1
Ω
50 k
Ω
10 µA
10
Ω
500 k
Ω
0.1% R + 3 D
1 µA
100
Ω
5 M
Ω∗∗
0.3% R + 3 D
100 nA
1k
Ω
50 M
Ω∗∗
1% R + 3 D
50 nA
600 V
RMS
10 k
Ω
∗
Overload protection can be reset automatically.
∗∗
The use of very short and shielded test leads is highly recommended for measurements in
this range (> 1 M
Ω
).
Number of count :
5000
Range selection :
automatic or manual (set in continuity mode)
Maximum open circuit voltage :
7 V
Detection threshold in continuity mode :
10
Ω
to 20
Ω
Response time in continuity mode :
1 ms
