46
10.3 VARIATIONS IN THE DOMAIN OF USE
The influence is characterized by an
Accuracy class
number for each quantity of
influence.
Quantity of
influence
Limit of the
Domain
Quantities
influenced
Influence
Typical
Max
Temperature
-20°c
to +55°
c
A,
Ω
(1)
, Uc
1 ct/10°C
+
R
2 ct/10°C
+
R
Relative humidity
10% RH to 90% RH A,
Ω
(1)
, Uc
1 ct
+
R
3 ct
+
R
Battery voltage
4 to 6.5V
A,
Ω
(1)
, Uc
0.1 ct
+
R
0.25 ct
+
R
Position of
conductor
from the edge to the
centre
A, Uc
0.1 ct
+
R
0.2 ct
+
R
Ω
(1)
0.05 ct
+
R 0.1 ct
+
R
Position of clamp
+/
-90°, 180°
A
0.2 ct
+
R
0.4 ct
+
R
Uc,
Ω
(1)
0.1 ct
+
R
0.25 ct
+
R
Proximity to
magnetic mass
Steel sheet 1mm
thick against air gap
A,
Ω
(1)
, Uc
0.1 ct
+
R
0.5 ct
+
R
Magnetic field at
50...60Hz
30A/m
A
2mA
(2)
4.5mA
(2)
Uc
0.1 ct
+
R
0,5 ct
+
R
Frequency of the
current
47 to 800Hz
A, Uc
1 ct
+
R
2 ct
+
R
Leakage current
at 50....60Hz
I<10A
R
x
I<50V
Ω
(1)
2 ct
+
R
8 ct
+
R
(1)
:
Ω
designates the quantities R, L, and Z.
(2)
: Offset on the current measurement.
10.4 POWER SUPPLY
■
4 1.5V LR6 (AA) alkaline batteries or 4 Ni-MH batteries.
■
Mean consumption: approximately 140mA.
■
Mean life: approximately 12 hours, or 1,440 30-second measurements.
Remark: extreme environmental conditions may perturb the internal
microprocessor. Simply disconnecting the battery may be enough to eliminate this
malfunction.
The batteries will be withdrawn for long-term storage.
