Chauvin Arnoux C.A 6456 Bedienungsanleitung Seite 257

Parameters accessible in the 3P setting :
Initial display
R
Initial display
H
R
E
R
S
R
E
Pressing the Pressing the Pressing the or or or key once more causes a return to the initial display. key once more causes a return to the initial display key once more causes a return to the initial display
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4.2.5 CHARACTERISTICS
4.2.5.1 MEASUREMENT RANGES AND ACCURACY
Particular reference : resistance of auxiliary earths < 100 Ω
conditions : resistance of the cable connected to terminal E of the instrument compensated
The instrument automatically selects one of two ,measurement currents according to the sum of Re and
Rh as well as the set voltage limit.
R
H
Display range
Specified measurement
domain
Accuracy
Measuring current
Max. acceptable resistance
in the current loop
R
H
Display range
Specified measurement
domain
Accuracy
Measuring current
Max. acceptable resistance
in the current loop
Maximum acceptable resistance
in the voltage loop
Frequency
No-load voltage
Accuracy of rod
resistance measurements
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(1 press)
st
H
z
U
HE
H
z
U
SE SE
+ R ≥ 9 kΩ at 50V or R + R ≥ 4.5kΩ at 25V
E H E
Measuring current = 5mA
40Ω 400 Ω
0.50 – 39.99 Ω 40.0 – 399.9 Ω
± 2% ± 5pt
8 kΩ (50 V) or 4 kΩ (25 V)
+ R ≥ 9 k? at 50 V or R + R ≥ 4,5 k? at 25 V
E H E
Measuring current = 500 µA
400 Ω 4000 Ω
0.5 – 399.9 Ω 400 – 3999 Ω
± 2% ± 5pt
500 µA
Common characteristics
61
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(2 press) (3 press)
nd nd
R
R
∆E
E ALARM
------- U
L
R R
E ALARM ∆E
U
-------
L
4000 Ω
400 – 3999 Ω
± 2% ± 2pt
5 mA
40.00 kΩ
4.00 – 39.99 kΩ
± 2% ± 2 pt
45 k Ω
50 kΩ
128 Hz
25 V or 50 V
5% + 5pt