AOIP OM 17 - F.3 Characteristics; F.3.1 General; F.3.2 Resistance measuring function

CARACTERISTIQUES
48 / 55 NTA47262-000A6
OM 17
F.3 Characteristics
General F.3.1
Stated accuracies are expressed in  (n% Rdg + C) with Rdg = reading and C = Constant expressed as a
practical unit. They apply to a unit situated in the reference conditions defined elsewhere in the manual after
warming-up for one hour.
Resistance measuring function F.3.2
 4-wire measurement with compensation of spurious voltages.
.
Range
Resolution
Accuracy over 1 year
Range
Resolution
5.0000 mΩ
0,1 µΩ
0,05% + 1,0 µΩ
10 A
50 mV
25.000 mΩ
1 µΩ
0,05 % + 3 µΩ
10 A
250 mV
250.00 mΩ
10 µΩ
0,05 % + 30 µΩ
10 A
2 500 mV
2500.0 mΩ
0,1 mΩ
0,05 % + 0,3 mΩ
1A
2 500 mV
25.000 Ω
1 mΩ
0,05 % + 3 mΩ
100 mA
2 500 mV
250.00 Ω
10 mΩ
0,05 % + 30 mΩ
10 mA
2 500 mV
2500.0 Ω
100 mΩ
0,05 % + 300 mΩ
1 mA
2 500 mV
Possible excess over the normal rating:
 Rating 5 mΩ : + 20%
 Rating 25 mΩ : + 20%
These values are dependent on the level of battery charge.
Maximum voltage between the terminals in an open circuit: 7V.
Temperature coefficient from 0°C to 18°C and from 28°C to 50°C:  1/10 of accuracy/°C.
Measuring the ambient temperature for compensation:
 Resolution: 0.1°C.
 Accuracy:  0.5°C.
ProtectionsF.3.3
 Electronic protection up to 250 V on the "voltage" wires.
 Fuse protection on the "current" wires.
 Protection against breaking the "current" circuit during inductive resistance measurements.