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Capacitive Sensor Drivers
Elite Series: CPL190 & CPL290
High Resolution

High resolution capacitive sensors for demanding applications.

Precise, High-Speed Measurements

Convenient Output Interface and Range Selections

Versatile, Useful Features

Life-Cycle Status: Active

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Specifications

Typical specifications. Resolution and linearity depend on probe, range, and bandwidth. See Probes and Ranges for details.

Typical Resolution*

0.003% @ 15 kHz
0.0005% @ 100 Hz

Bandwidth
(PCB Dip-Switch Selectable)

15 kHz, 10 kHz, 1 kHz, 100 Hz

Typical Linearity*

0.2%F.S.

Maximum Drift

0.04%F.S./°C

BNC Output

±10 V, 0 ohms, 15 mA max

Rear Panel National Instruments
Interface Connector Output Voltage

Differential ±10 V

Operating Temperature

4-50 °C

*Probe/Range dependent, see Range/Resolution table below

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CPL190/CPL290 Measurement Ranges/Resolutions - Probe Dependent

Too Much? Get Expert Help

Listed specifications assume a 2 meter probe cable; flat measurement area diameter at least 1.3 times larger than the Sensing Area diameter; and no customizations.

1 mil = 0.001"

probe-sensor cal

Noise image

Integral filters included in the CPL190 and CPL290

   

Standard Probes

Sensing Area
Diameter

mm

Measurement Range

Resolution* @ Bandwidth

Linearity

% F.S.

Body Style

capacitive sensor probe dimensions

Range
Type

Range
µm
mils

Near Gap
µm
mils

100 Hz
nm
µin
1 kHz
nm
µin
10 kHz
nm
µin
15 kHz
nm
µin
0.5 Fine 10
0.4
20
0.8
0.06
0.003
0.1
0.004
0.4
0.016
0.5
0.020
0.25

Standard 50
2.0
50
2.0
0.3
0.012
0.5
0.020
3.0
0.12
4.0
0.16
0.25
Extended 80
3.0
60
2.4
0.5
0.02
1.0
0.04
5.0
0.20
0.25
0.8 Fine 25
1.0
75
3.0
0.2
0.008
0.5
0.02
1.2
0.05
1.5
0.06
0.15

Standard 100
4.0
100
4.0
0.5
0.02
1.0
0.04
3.5
0.14
5.0
0.20
0.15
2.0 Ultrafine 10
0.4
20
0.8
0.05
0.002
0.08
0.003
0.15
0.006
0.25
0.010
0.15

Fine 50
2.0
75
3.0
0.20
0.008
0.30
0.010
0.60
0.024
1.0
0.040
0.15
Standard 250
10.0
125
5.0
0.80
0.03
1.0
0.04
4.0
0.16
5.0
0.20
0.10
Extended 500
20.0
125
5.0
1.5
0.06
3.0
0.12
8
0.32
10
0.40
0.15
3.2 Fine 50
2.0
125
5.0
0.25
0.010
0.40
0.016
1.0
0.032
1.6
0.052
0.20
Standard 500
20.0
250
10.0
2.0
0.10
3.0
0.12
6.0
0.28
10
0.40
0.15
Extended 1250
50.0
250
10.0
10
0.28
15
0.40
20
0.80
30
1.2
0.20
5.6 Fine 50
2.0
225
9.0
0.30
0.012
0.40
0.016
0.80
0.040
1.3
0.060
0.20

20mm rectangular probe

Standard 500
20.0
500
20.0
2.5
0.08
3.0
0.12
7.0
0.24
10
0.40
0.15
Extended 2000
80.0
250
10.0
7
0.40
10
0.60
20
0.80
30
1.2
0.20
13 Fine 2000
80.0
2000
80
20
0.80
30
1.2
35
1.4
40
1.6
0.5
Standard 3200
125
2000
80
30
1.2
40
1.6
50
2.0
60
2.4
0.5
Extended 5000
200
3000
120
75
3.0
100
4.0
130
5.2
150
6.0
0.5
19 Standard 2500
100.0
5000
200
50
2.0
70
2.8
90
3.6
100
4.0
0.3
Extended 6000
250.0
3000
120
90
3.6
120
4.8
160
6.4
180
7.2
1.0
21 Standard 8000
300
5000
200
75
3.0
100
4.0
130
5.2
150
6.0
0.5
Extended 12500
500
5000
200
130
5.2
180
7.2
230
9.2
250
10
0.5

* Resolution values are RMS. Peak-to-peak values are typically 8-10 times greater than the RMS values. Read Understanding Sensor Resolution Specifications and Effects on Performance about this often misunderstood specification.
In high EMI conditions (10 V/m), output DC level may shift and noise may rise to 0.2 VRMS (1% resolution)
Custom calibrations can achieve exceptional resolution performance

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