58
4.3 Measuring Current
Sensor Temperature Characteristics
The 9691, 9692 and 9693 CLAMP ON AC/DC SENSORs employ a
Hall-effect element for current detection. The zero point and sensi-
tivity are therefore temperature dependent according to the charac-
teristics of the individual Hall-effect element.
Zero-Point Temperature Characteristics
Because of the individual differences between Hall-effect ele-
ments, the actual offset and rate of change cannot be specified. In
an operating environment with wide temperature variations, we
suggest being aware beforehand of changes to the zero point with
no input. However, while zero point variations affect DC values,
they have no effect in the AC mode. The examples show zero point
variations (normalized to 23°C) with temperature change for differ-
ent sensors (characteristics vary widely from one element to
another).
Specified operating temperature range is 0 to 40°C.
Model 9691 Zero Point vs. Temperature
Model 9692 Zero Point vs. Temperature
-2.0
-1.0
0.0
1.0
2.0
-40
-20
0
20
40
60
80
温度（℃）
偏差
（A
）
No.1
No.2
No.3
No.4
No.5
Temperature (°C)
De
via
tio
n
(
A
)
-4.0
-2.0
0.0
2.0
4.0
-40
-20
0
20
40
60
80
温度（℃）
偏差（
A
）
No.1
No.2
No.3
No.4
No.5
De
via
tio
n
(
A
)
Temperature (°C)
Summary of Contents for 3290-10
Page 1: ...CLAMP ON AC DC HiTESTER INSTRUCTION MANUAL 3290 10...
Page 2: ......
Page 6: ...iv Contents...
Page 14: ...8 Usage Notes...
Page 42: ...36 2 5 Turning Power On and Off...
Page 54: ...48 3 6 Measuring Duty by Timer...
Page 149: ...4 5 6 7 8 9 10 11...
Page 150: ......
