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Capacitive Sensors – Non Contact Sensors

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Capacitive Sensors

Capacitive Sensor Diagram

Custom Sensor Design

We are glad to work with you on custom probes and electronics for your specific application. Over half of our orders are customized, this includes:

• Custom Probe Shapes And Designs
• Custom Cable Lengths And Connectors
• Vacuum Compatible Probes
• Custom Ranges
• Custom Electronics

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lionprecision.com Our Lion Precision Technical Library provides a high level of technical detail about all of our products and technologies including all manuals and drawings of the probes.

Our Capacitive Sensing Theory of Operation TechNote is viewed thousands of times a month.

Product Selection Guide

Selecting the Right Technology

* Typical Specifications dependent on probe and range

*Specifications listed on the following page are for probes with standard 2 meter cables. Listed specifications do not apply when customization is included. Performance of customized product will depend on specific options.

Probe Vacuum Compatibility (to 10-6 Torr)

Probe High-Vacuum Compatibility (to 10-12 Torr)

Options requiring custom calibration and deviation from listed specifications:

• Custom Ranges
• Nonflat or Undersized Target Shape
• Custom Cable Length
• Probe Extension Cables (2 m, 3m, 4 m; Probes calibrated with extension cables must be used with them)

CAPACITIVE DRIVER

CPL590 – Capacitive Driver

• Digital Outputs
• USB, SPI and EtherCAT
• Small 2U Size
• Up to 4 Selectable Ranges on 1 Probe
• Best Linearity
• Higher Stability
• Digital Adjustment

Specifications

• Resolution¹: 0.0005% @ 100 Hz | 0.003% @ 15 kHz
• Selectable Bandwidth: 100Hz, 1, 10, 15kHz
• Linearity²: <0.1% F.S. typical
• Max Drift: 0.04% F.S./°C
• Operating Temp: 4-50°C
• Output: ±10V, 0Ω10mA max
• Rear-Panel: SPI, EtherCAT

CPL490 – Elite Series

• Highest resolution
• Widest bandwidth (50 kHz)
• Five-element range indicator
• Zero adjust
• Front-panel BNC analog output
• Differential output to National Instruments 68-pin connector
• Uses 2nd Generation Probes

Specifications

• Resolution: 0.0004% @ 1 kHz | 0.0007% @ 15 kHz | 0.002% @ 50 kHz
• Selectable Bandwidth: 1, 10, 15, 50 kHz
• Linearity: <0.2% F.S. typical
• Max Drift: 0.02-0.04% F.S./°C
• Operating Temp: 15-40°C
• Front-Panel BNC: ±10V, 0Ω10mA max
• Rear-Panel National Inst: ±10V, 0ΩDifferential
• Multiple Channels: Up to 3 per enclosure (Contact Lion Precision for more than 3)

CPL490 – Probes and Ranges

Second Generation Probes

• The CPL490 uses 2nd Generation Capacitive Probes which include electronics in the probe housing.
• The probes are mounted by the 8mm diameter probe body extending from the larger housing.
• Two models are available differing only in the sensing area diameter and associated measurement ranges.

CPL190/CPL290 – Elite Series

• High resolution five-element range indication
• Coarse/Fine zero adjust with disable
• Front-panel BNC analog output
• Differential output to National Instruments 68-pin connector

Specifications

• Resolution: 0.0005% @ 100 kHz | 0.003% @ 15 kHz
• Selectable Bandwidth: 100 Hz, 1, 10, 15 kHz
• Linearity: <0.2% F.S. typical
• Max Drift: 0.04% F.S./°C
• Operating Temp: -50°C
• Front-Panel BNC: ±10V, 0Ω10mA max
• Rear-Panel National Inst: ±10V, 0ΩDifferential

CPL230 – Compact, Multi-Channel Driver

• High resolution five-element range indication
• Separate power and signal connectors
• OEM and embedded application
• Small Size, high-density package
• No user adjustments
• ±5V single-ended output, ±10V differential output

CPL350 – Compact, Single-Channel Driver

• OEM and embedded applications
• ±10V single-ended
• BNC output
• ±10V differential D-Sub output
• No user adjustments
• Small size
• High-density package

Specifications

• Resolution: 0.0007% @ 100 kHz | 0.004% @ 15 kHz
• Selectable Bandwidth: 100 Hz, 1, 10, 15 kHz
• Linearity: <0.5% F.S. typical
• Probe Drift: 0.04% F.S./°C
• Operating Temp: 4-50°C
• Output: ±10 V, Differential | ±5 V, Single-Ended
• Input Power: ±15 VDC, 500 mA max

CPA100 – Precision Analog Proximity Switch

• Lower Cost
• 0-10 V nonlinear analog output
• Setpoint/Switched output
• Adjustable gain and zero
• Five-element range indicator
• Remote gain and zero adjustment connections
• DIN rail case
• Multiple channel sync

Specifications

• Resolution: CPA100: 0.03% RMS@ 15 kHz | CPA 100e: 0.3μm RMS or higher @ 15 kHz
• Bandwidth: 15 kHz
• Linearity: Nonlinear
• Max Drift: Driver: 0.2% F.S./°C | Probe: 0.05% F.S./°C
• Analog Output: 0-10V, 0Ω, 15mA max.
• Setpoint: Fixed at 5 V (mid-range)
• Setpoint Output: Solid state switch closure
• On state: 2.5Ω, 100mA max
• Off state leakage: 10μA max
• Operating Temp: 4-50°C
• Output Power: 15-24 VDC, 2.5W

1. Typical at midpoint. Dependent on probe, range, and bandwidth.

2. External power supply not included – available as accessory (p.3) Listed specifications assume a two meter probe cable;Flat measurement area diameter at least 1.3times larger than the Sensing Area with no customizations.

Different probe body styles/sizes are available for each Sensing area.

Export License: May require an export license to some countries.

CPA100 – Probes and Ranges

Capacitive Probes

Probe Model Numbers

• Probe model numbers are a combination of the Body Model number and Sensing Area Diameter in mm (e.g. C5S-08 or R45-19).
• Cad Files available at www.lionprecision.com/technical-library

Typical Applications

COMMITMENT TO SERVICE

Lion Precision’s commitment to service is unsurpassed in the industry. We partner with our customers to ensure their success by providing optimized sensing solutions.

Contact us today and let us solve your difficult measurement problems.