CKSR-50-NP Datasheet, PDF (9/24 Pages) LEM – CAS / CASR / CKSR series Current Transducers

It is also possible to cancel the offset drift of the reference voltage when working over the defined temperature range by
using the same method.
The use of the Closed Loop Fluxgate technology allowed achieving significantly better performances for the following
parameters:
• Initial offset at +25°C
• Offset drift
• Gain drift
as expressed per the following charts (Fig. 7: Comparison between CAS and LTS ; CASR and LTSR models).
CAS 6-NP LTS 6-NP CAS 15-NP LTS 15-NP CAS 25-NP LTS 25-NP
Nominal current, I_PN
Measuring range
Response time
Bandwidth (±1 dB)
Output voltage noise, 100 Hz..10 kHz (typ.)
Output
Sensitivity
Sensitivity error (max)
Offset drift (25°C .. 85°C) (max)
Sensitivity drift (25°C .. 85°C) (max)
Linearity (max)
Accuracy at +25 °C (max)
Accuracy at +85 °C (max)
Offset (max)
Operating temperature range
A
A
us
kHz
mVpp
mV/A
% of I_PN
% of I_PN
% of I_PN
% of I_PN
% of I_PN
% of I_PN
mV
°C
6
20
19.2
< 0.3
0.4
200
200
2.4
10
Voltage
104.2
0.7
0.6
1.92
4.8
0.24
0.3
0.1
0.1
0.80
0.70
3.0
5.80
10.4
25
-40 .. 85 -40 .. 85
15
51
48
< 0.3
0.4
200
200
1.0
4.2
Voltage
41.7
0.7
0.6
1.68
2.9
0.24
0.3
0.1
0.1
0.80
0.70
2.7
3.58
7.1
25
-40 .. 85 -40 .. 85
25
85
80
< 0.3
0.4
200
200
0.6
2.5
Voltage
25.0
0.7
0.6
1.44
2.4
0.24
0.3
0.1
0.1
0.80
0.70
2.5
3.40
6.3
25
-40 .. 85 -40 .. 85
CASR 6-NP LTSR 6-NP CASR 15-NP LTSR 15-NP CASR 25-NP LTSR25-NP
Nominal current, I_PN
Measuring range
Response time
Bandwidth (±1 dB)
Output voltage noise, 100 Hz..10 kHz (typ.)
Output
Sensitivity
Sensitivity error (max)
Offset drift (25°C .. 85°C) (max)
Sensitivity drift (25°C .. 85°C) (max)
Linearity (max)
Accuracy at +25 °C (max)
Accuracy at +85 °C (max)
Offset max
Operating temperature range
A
A
us
kHz
mVpp
mV/A
% of I_PN
% of I_PN
% of I_PN
% of I_PN
% of I_PN
% of I_PN
mV
°C
6
20
19.2
< 0.3
0.4
200
200
1.7
10
Voltage
104.2
0.7
0.6
0.72
3.6
0.24
0.3
0.1
0.1
0.8
0.70
1.8
4.60
5.3
25
-40 .. 85 -40 .. 85
15
51
48
< 0.3
0.4
200
200
0.7
4.2
Voltage
41.7
0.7
0.6
0.48
1.5
0.24
0.3
0.1
0.1
0.8
0.70
1.5
2.54
2.2
25
-40 .. 85 -40 .. 85
25
85
80
< 0.3
0.4
200
200
0.4
2.5
Voltage
25.0
0.7
0.6
0.24
0.9
0.24
0.3
0.1
0.1
0.8
0.70
1.3
1.90
1.4
25
-40 .. 85 -40 .. 85
Fig. 7. Comparison between CAS and LTS ; CASR and LTSR models – Electrical performances