Metrix MX 24B, User Manual, Page: 13 / 17

Chapter II
5000-count portable digital multimeter, with current input
24
5.2.3. DC current
Selector switch
position
Ranges Accuracy Max voltage
drop
Protection Fuses
(∗)
Resolution
500 mA
DC
500 mA
DC
0.3 %R + 2 D < 800 mV 600 V
RMS
F1 + F2 100 µA
DC
10 A
DC
(∗∗)
10 A
DC
1 %R + 5 D < 700 mV 600 V
RMS
F2 10 mA
DC
(∗)
Refer to fuse specifications section 3.5.3.
(∗∗)
Acceptance 20 A overload during 30 s. max, observing a 5 min break at least
between two measurements
Number of points : 5 000
« OL » on the display (range 500 mA
DC
only) and intermittent signal sounds in case of
range overpassing.
5.2.4. AC currents (AC+DC)
Selector switch
position
Ranges Accuracy
40 Hz to 1 kHz
Max voltage
drop
Protection Fuses
(∗)
Resolution
500 mA
AC+DC
500 mA
AC+DC
1.5 %R + 2 D < 800 mV 600 V
RMS
F1 + F2 100 µA
AC+DC
10 A
AC+DC
(∗∗)
10 A
AC+DC
2.5 %R + 5 D < 700 mV 600 V
RMS
F2 10 mA
AC+DC
(∗)
Refer to fuse specifications section 3.5.3.
(
∗∗
)
Acceptance 20 A overload during 30 s. max, observing a 5 min break at least between
two measurements
Specifications applicable from 5 % to 100 % of the range for a sinusoidal signal in band
40 Hz to 1 kHz.
Number of points :
5 000
Additional error according to crest factor : 1 % for a crest factor of 1.5 to 2
4 % for a crest factor of 2 to 3
« OL » on the display (range 500 mA
AC+DC
only) and intermittent signal sounds in case
of range overpassing.
5.2.5. Resistance / Continuity test
Selector switch
position
Ranges Accuracy Measurement
current
Protection
(∗)
Resolution
500
Ω
0.3 %R + 3 D 1 mA
0.1
Ω
500
Ω
1 mA 0.1
Ω
5 k
Ω
0.3 %R + 3 D 100 µA 1
Ω
Ω
50 k
Ω
10 µA 600 V
RMS
10
Ω
500 k
Ω
1 µA
100
Ω
5 M
Ω
0.5 %R + 3 D 100 nA 1 k
Ω
50 M
Ω
1 %R + 5 D 50 nA 10 k
Ω
(∗)
Overload protection can be reset automatically.
Number of points : 5 000
Range selection : automatic or manual (fixed in continuity
mode)
Maximum open circuit voltage : 4 V
Detection threshold in continuity mode : 10
Ω
to 20
Ω
Response time in continuity mode : < 1 ms
For measurements in 5 M
Ω
and 50 M
Ω
ranges, the use of shielded connection is highly
recommended.