Chapter II
5.
TECHNICAL SPECIFICATIONS
5.1. General
Only the values assigned tolerances or the limits declared
constitute guaranteed values. The values without any
tolerance are given as indications.
The symbol
is displayed when input signal exceeds
measuring limit in 40 A~ (MX 650), 40 and 400 A~ (MX 655),
resistance and continuity range.
In voltage, current and frequency range, this symbol will not
be shown even the read reach the measuring limit of :
750 VAC, 1000 VDC, 1000 AAC/DC, 10 Hz.
5.2. Characteristics
Accuracy is to within ± [% of the reading (L) + number of
counts (ct)] in the reference conditions indicated in the
appendix.
(MX 655) When measuring U rms and I rms, add ± 1% L
additional error margin, from 5% to 50% of the range for a
maximum peak factor of 6, and from 5% to 100% of the range
for a peak factor of between 1.4 and 3.
Over and above these limits, accuracy is not specified.
5.2.1. Direct voltage (automatic ranges)
(MX 650)
Range
Meas. range
400 V
0.2 to 399.9 V
0.1 V
1000 V
400 to 1000 V
1 V
Protection against overloads: 1000 Vrms
(MX 655)
Range
Meas. range
400 V
0.2 to 399.9 V
0.1 V
1000 V
400 to 1000 V
1 V
Protection against overloads: 1000 Vrms
5.2.2. Alternating voltage (automatic ranges)
(MX 650)
Range
Meas. range
Frequency
400 V
0.5 to 399.9 V 50...500 Hz
500...1000 Hz
750 V
400 to 750 V 50...500 Hz
500...1000 Hz
Input impedance: 10 MΩ
Protection against overloads: 1000 Vrms
(MX 655)
Range
Meas. range
Frequency
400 V
0.5 to 399.9 V 50...500 Hz
500...1000 Hz
750 V
400 to 750 V 50...500 Hz
500...1000 Hz
Input impedance: 10 MΩ
Protection against overloads: 1000 Vrms
5.2.3. Direct current (MX 655 only)
Range
Meas. range
Resolution
40 A
0.10 to 39.99 A
0.01 A
400 A
40.0 to 400.0 A
0.1 A
1000 A
400 to 1000 A
1 A
Protection against overloads: 1200 A
MX 650 / MX 655
Resolution
Accuracy
0.75% L + 2 ct
0.75% L + 2 ct
Resolution
Accuracy
1% L + 2 ct
1% L + 2 ct
Resol.
Accuracy
0.1 V 1.2% L + 5 ct
1.5% L + 5 ct
1 V
1.2% L + 5 ct
1.5% L + 5 ct
Resol.
Accuracy
0.1 V 1.5% L + 5 ct
1.8% L + 5 ct
1 V
1.5% L + 5 ct
1.8% L + 5 ct
Accuracy
2.5% L + 10 ct
2.5% L + 10 ct
2.5% L + 10 ct
RMS
27