OPERATING MANUAL MMR-630 Revision 1.6
32
9
Attachments
9.1
Technical data
The abbreviati
on „m.v.” in the basic error definition means the measured value
The errors specified in the table refer to measurements realised by means of bidirectional current
and they are related to the average value of two measurements, in accordance with the following for-
mula:
2
R
F
R
R
R
, where R
F
– resistance at the conventional „forward” current, and R
R
– resistance
at the conventional „backward” current. In the case of measurements with single-direction current and
for measurements of inductive objects at a reduced measurement time (symbol
F
) the
specified precision is not guaranteed.
Measurement of resistance
Range
Resolution
Basic uncertainty
Current
0...999,9
0,1
(0,25% m.v. + 2 digits)
10A
1,0000...1,9999m
0,0001m
2,000...19,999m
0,001m
20,00...199,99m
0,01m
1A
200,0...999,9m
0,1m
0,1A
1,0000...1,9999
0,0001
2,000...19,999
0,001
10mA
20,00...199,99
0,01
1mA
200,0...
1999,9
0,1
0,1mA
Input voltmeter impedance:
200k
Measurement resistance at a 50Hz noise
Measured
resistance
Noise level
Additional uncer-
tainty
Measurement
blocked
<0,2m
Ω
15...100mV
≤
1%
-
<0,2m
Ω
>100mV
-
YES
≥
0,2m
Ω
100mV...0,5V
≤
1%
-
≥
0,2m
Ω
>0,5V
-
YES
Other technical data
:
a) Kind of insulation: ...................................................... double, in accordance with EN 61010-1:2004
b) Measurement category ....................................................................................................................
..... III 300V (< 2000m above sea level), III 260V (< 3000m above sea level) EN 61010-1 compliant
c) Protection grade of the casing in accordance with EN 60529 ................................................... IP54
d) Protection from external voltage ......................................................................up to 440Vac for 10s
e) Power supply of the meter ......................... package of ACCUMULATORS SONEL/NiMH 4,8V 3Ah
f) Power supply of the charger ................................................................ 100..250V/50..60Hz, 200mA
g) Charging time .............................................................................................. approximately 2,5hours
h) Number of measurements with 10A current ............................................................................... 300
i)
Maximum resistance of leads for 10A current .......................................................................... 0,1
j)
Maximum inductivity of the tested object ................................................................................... 40H
k) Exactitude of the measurement current .................................................................................
10%
l)
Duration of measurements of resistance:
in case of resistance-type objects and bidirectional current ........................................................ 3 s
Summary of Contents for MMR-630
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