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ECD140 & ECD140e Eddy-Current Displacement Sensor for CompactRIO (National Instruments)

The ECD140 plugs directly into a National Instruments CompactRIO system for instant use with LabVIEW.

Features down | LabVIEW Drivers down | Specifications down | Probes & Rangesdown

Performance

Features

Life-Cycle Status: Not Recommended for New Designs

Export Requirements

Because of high resolutions, exports of the ECD140 may require an export license.

ECD140e

The ECD140e has different resolution specifications and can ship without an export license.

LabVIEW, CompactRIO Drivers

Firmware Version

Demo Files

Manual

Rev 2

ECD14x-Basic-Rev-2.zip (0.8M)
ECD14x-Multi-Chan-Demo-Rev-2.zip (1.8M)

ECD140 Manual Rev 1 (250K pdf)

Intended Users - Important

The ECD140 is intended for LabVIEW users experienced in FPGA and Real Time processor programming on the RIO platform. The device and the included software provide a tool kit for developers creating a complete system which requires precision noncontact displacement sensors. The system is not intended to be out‑of‑the‑box operational, but requires implementation and programming by experienced LabVIEW FPGA users.

Specifications

Typical specifications for standard targets and probes. Actual values depend on probe, target, and calibration. Specifications assume a target area at least three times the diameter of the probe.

Resolution:

ECD140: 0.002-0.025% RMS @ 15 kHz
ECD140e1: 0.4 µm or higher RMS @ 15 kHz
Dependent on probe and calibration.
See Range Table for resolution specifications.

Linearity

0.2% of Range

Error Band

0.4% of Range

Bandwidth

15 kHz

Driver Temperature Drift

(15 °C-50°C)
nonferrous U8 Probe

0.06% F.S./°C

U12 Probe
ferrous U8 Probe
U12 Probe

Probe Temperature Drift

(15 °C-65°C, except where noted)
nonferrous U8 Probe 0.02% F.S./°C
U12 Probe 0.03% F.S./°C
ferrous U8 Probe 0.04% F.S./°C
U12 Probe 0.03% F.S./°C

Driver Operating Temperature

4°C-50°C

Probe Operating Temperatures

Standard Probes come with PUR (Polyurethane) jacketed cables. High Temperature Probes have FEP jackets.

Other temperature ranges may be possible. Contact us for more information.

Standard Probes: IP67

High Temperature Probes: IP63

U8-18 Probes

Standard Probes:
-25°C to +125°C

High Temperature Probes:
-25°C to +200°C

U25-50 Probes

Standard Probes:
-25°C to +125°C

High Temperature Probes:
-25°C to +175°C

Probes, Ranges, and Resolutions (Probe Dependent)

Larger Probe Diameter = Larger Range
Target: Flat, Surface Diameter > 3 X Probe Diameter
or custom calibration required

Probes can be ordered as vacuum compatible; Custom probes are available.

cal

 

Listed specifications are for standard target materials: Nonferrous Al 6160, Ferrous 4140 Steel.

Range

mm

Near Gap

mm

Probe

Target
Type

ECD140
Resolution*

µm

ECD140e
Resolution*

µm
2.00
0.35
U8 nonferrous 0.145
0.4
ferrous 0.180
0.4
3.50
0.60
U12 nonferrous 0.240
0.4
ferrous 0.300 0.4
5.00
0.75
U18 nonferrous Contact us for specifications
ferrous
8.00
1.25
U25 nonferrous
ferrous
12.5
1.50
U38 nonferrous
ferrous
15.0
2.00
U50 nonferrous
ferrous
* RMS @ 15 kHz. Peak-to-Peak values are approximately 8-10 times higher
In high EMI environments, output noise may rise to 0.030 VRMS (0.3% resolution)

 

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