Technical specifications
100,000-count graphical multimeters 33
Technical specifications (cont’d)
Current measurement
A
DC current
MTX 3281
MTX 3282
MTX 3283
In "A
DC
" mode, you measure the value of a DC current or the DC component of
an AC current.
(∗) with the fuse delivered with the instrument
(∗∗) 100 A range limited to 20 A
Specifications valid from 0 % to 100 % of range
A
AC current
A
AC+DC
T
RMS
In "A
AC
" and "A
AC+DC
" modes, you measure the true RMS value of an AC current
with/without its DC component (no capacitive coupling in "AC+DC" mode).
MTX 3282
MTX 3283
(∗) with the fuse delivered with the instrument
(∗∗) 100 A range limited to 20 A
In presence of a continuous component :
additional error : (I DC / I measured) x (0,7% + 70 D)
A max. overload of 20 A is acceptable for 30 s max. with a pause of 5 min at least
between each measurement.
From 7 A, the measurement is limited to an ambient temperature of 30°C or a period of
30 minutes.
Specifications valid from 10% to 100% of range for sinusoidal current.
Protection 1000 Vrms by ceramic HRC type fuse
Fuse 1000 V, 11 A > 20 kA Cos ϕ > 0.9 (10 x 38 mm)
As soon as the PEAK symbol appears, switch to AUTO PEAK mode :
MTX 3282
,
MTX 3283
mA and µA range:
Additional error of 2% for a peak factor between 4.5 and 6
Additional error of 15% for a peak factor between 6 and 9
10 A range:
Zero up to peak factor of 6.
Voltage drop
: 10 A < 400 mV
1 mA ≈ 160 mV 10 mA ≈ 180 mV
100 mA ≈ 180 mV 1000 mA ≈ 300 mV
Range
Input impedance
Resolution
Protection
Accuracy
1000 µA
approx. 170 Ω
10 nA 0.1% + 15D
10 mA
approx. 17 Ω
100 nA
100 mA
approx. 1.7 Ω
1 µA
0.08% + 8D
1000 mA
approx. 0.17 Ω
10 µA 0.15% + 8D
10 A 100 µA
100 A (∗∗)
approx. 0.03 Ω (∗)
1000 µA
11 A
20 A < 30 s
0.5% + 15D
Accuracy
Range
Input
impedance
Resol. Protect.
45 Hz to 1 kHz 1 kHz to 4 kHz 4 kHz to 20 kHz
1000 µA
approx. 170 Ω
10 nA 1% ± 40D
5% ± 30D
10 mA
approx. 17 Ω
100 µA
100 mA
approx. 1.7 Ω
1 µA
1000 mA
approx. 0.17 Ω
10 µA
1% ± 30D
1.5% ± 30D
3% ± 30D
10 A 100 µA 1.5% ± 30D
100 A (∗∗)
approx. 0.03 Ω
(∗)
1000 µA
11 A
20A<30s
2.5% ± 30D
3% ± 30D 5% ± 30D
MTX 3281
Accuracy
Range
Input
impedance
Resolution Protection
45 Hz to 1 kHz
1 kHz to 4 kHz 4 kHz to 20 kHz 20 to 50 kHz
1000 µA
approx. 170 Ω
10 nA 0.5% ± 40D 1% ± 30D 5% ± 30D -
10 mA
approx. 17 Ω
0.1 µA
100 mA
approx. 1.7 Ω
1 µA
5% ± 30D
1000 mA
approx. 0.17Ω
10 µA
0.3% ± 30D 1.5% ± 30D
10 A 100 µA 1.5% ± 30D
100 A (∗∗)
approx. 0.03Ω
(∗)
1000 µA
11 A
20A < 30s
2.5% ± 30D
2% ± 30D
3% ± 30D
-
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