Characteristics; Power Supply - Chauvin Arnoux C.A 6250 Manual De Instrucciones

4.1

CHARACTERISTICS

Remark: accuracies are stated in the form ± (n% read + C) where read = reading and C = a Constant,
in practical units.
They apply to the instrument placed in the reference conditions (see § 4.3), after 1 hour of warming up.
4-wire measurement with compensation of spurious voltages.
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(measurements made under reference conditions as per publication CEI 485 (national standards NF
C 42-630 and DIN 43751)).
Range
Resolution
5.000 mΩ
0.1 µΩ
25.000 mΩ
1 µΩ
250.00 mΩ
10 µΩ
2500.0 mΩ
0.1 mΩ
25.000 Ω
1 mΩ
250.00 Ω
10 mΩ
2500.0 Ω
100 mΩ
Possible overshoot of nominal range :
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5 mΩ range
25 mΩ range
Maximum open-circuit voltage on terminals : 7 V.
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Temperature coefficient from 0 °C to 18 °C and from 28 °C to 50 °C : ≤ 1/10 of the accuracy per / °C.
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Measurement of ambient tempearture for compensation :
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Resolution
Accuracy
4.2

POWER SUPPLY

The instrument is supplied by :
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- a rechargeable battery pack comprising 5 1.2 V, 8.5 Ah (size D) NiMH cells
- that can be charged, using a built-in charger, by connecting the instrument to line power: 90 to 264 V,
45 to 420 Hz.
Note: The battery compartment is inside the housing.
Charging the batteries :
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ATTENTION : mesurements are disabled while the batteries are charging.
- If the instrument displays :
during a measurement : "Err01"
in standby :
It must then be charged
- The instrument can be charged only when OFF, and a full charge takes approximately 5 h.
4. CHARACTERISTICS
Accuracy over 1 year
0.05 % +1 µΩ
0.05 % + 3 µΩ
0.05 % + 30 µΩ
0.05 % + 0.3 mΩ
0.05 % + 3 mΩ
0.05 % + 30 mΩ
0.5 % + 300 mΩ
: + 20 %
: + 20 % (the values depend on the battery charge condition)
: 0,1 °C
: ± 0.5 °C.
, this means that the charge of the battery is low.
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Measuring current Voltage drop
10 A
10 A
10 A
1 A
100 mA
10 mA
1 mA
50 mV
250 mV
2500 mV
2500 mV
2500 mV
2500 mV
2500 mV