Eddy-Current Sensors

ECA101 Eddy-Current Displacement Sensor

Reliable, lower-cost sensor for demanding analog proximity applications.

Adjustable gain and offset and adjustable setpoint switch output.

Features | Specifications Probes & Ranges | Mechanical

Performance

Nonlinear Output
Resolution: 0.02%FS
Bandwidth: 10 kHz
0-10 VDC Output
Setpoint Switched Output

Features

Adjustable Gain and Zero (Offset)
Adjustable Setpoint for Go/No-Go Testing
Range Indicating LEDs
12-24 VDC Power
Probes can be ordered as vacuum compatible.

Life-Cycle Status: Active

Applications

Thread Sensing in Ferrous Materials

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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*: RMS at mid-range	DC-10 kHz - 0.02% of range RMS
Bandwidth	10 kHz
Linearity	Nonlinear - See Output Curves in Ranges/Probes
Temperature Drift of Probe at mid-range (15°C-65°C)	±0.1% of range/°F ±0.2% of range/°C
Voltage Output	Analog Voltage: 0-10 V
Switch Output	Switch closure when output voltage is above adjustable setpoint: 30 VAC/60 VDC/100 mA
Input Power	12-24 VDC 2 W
Operating Temperature	40°F-120°F 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	U3 Probe	Standard Probe (PUR Cable): -25°C to +125°C (Available with optional FEP cable) High Temperature Version Not Available
	U5-18 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
*P-P resolution is 0.2%. In high EMI conditions (10 V/m), output level may shift and noise may rise to 600 mV RMS (6% resolution)

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Probes and Ranges (Probe Dependent)

Larger Probe Diameter = Larger Range
Target: Flat, Diameter > 3 X Probe Diameter

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

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

Range mm inch	Near Gap mm inch	Probe	Output Linearity Chart
0.50 0.020	0.05 0.002	U3	U3 Chart
1.25 0.050	0.25 0.010	U5	U5 Chart
2.00 0.080	0.35 0.015	U8	U8 Chart
3.50 0.140	0.60 0.025	U12	U12 Chart
5.00 0.200	0.75 0.030	U18	U18 Chart
8.00 0.320	1.25 0.050	U25	U25 Chart
12.5 0.500	1.50 0.060	U38	U38 Chart
15.0 0.600	2.00 0.080	U50	U50 Chart