Eddy-Current Sensors
ECL101/ECL110 Eddy-Current Sensor: Probes and Ranges
Probe model numbers are specified by their diameter and body style: i.e. a U8C probe has an 8mm diameter and a "C" body style.
Probe diameter determines the range.
Larger Diameter = Larger Range
See the probe page for mechanical details, important mounting clearances, and temperature limits.
Probes can be ordered as vacuum compatible.
Range and Resolution
Specifications assume a target at least 3 times the diameter of the probe.
A specific range and resolution will require a particular probe size/model. Range/Resolution may also be affected by the target material.
Custom ranges are always available.
Listed specifications are for standard target materials.
Range and Resolution Chart
Range mm |
Near Gap mm |
Probe |
Target |
Resolution (RMS*) µm |
||
| 1 kHz | 10 kHz | 80 kHz | ||||
| 0.50 0.020 |
0.05 0.002 |
U3 | Nonferrous | 0.03 1.2 |
0.06 2.4 |
0.20 7.9 |
| Ferrous | 0.04 1.6 |
0.08 3.1 |
0.30 12 |
|||
| 1.25 0.050 |
0.25 0.010 |
U5 | Nonferrous | 0.06 2.4 |
0.10 4.0 |
0.25 9.8 |
| Ferrous | 0.09 3.5 |
0.15 5.9 |
2.0 79 |
|||
| 2.00 0.080 |
0.35 0.015 |
U8 | Nonferrous | 0.10 4.0 |
0.16 6.3 |
1.2 47 |
| Ferrous | 0.13 5.1 |
0.21 8.3 |
2.0 79 |
|||
| 3.50 0.140 |
0.60 0.025 |
U12 | Nonferrous | 0.20 7.9 |
0.28 11 |
0.70 28 |
| Ferrous | 0.26 10 |
0.35 14 |
1.2 47 |
|||
| 5.00 0.200 |
0.75 0.030 |
U18 | Nonferrous | 0.24 9.4 |
0.48 19 |
3.2 130 |
| Ferrous | 0.32 13 |
0.64 25 |
4.5 180 |
|||
| 8.00 0.320 |
1.25 0.050 |
U25 | Nonferrous | 0.35 14 |
0.70 28 |
5.3 210 |
| Ferrous | ||||||
| 12.5 0.500 |
1.50 0.060 |
U38 | Nonferrous | 0.55 22 |
1.1 43 |
8.3 330 |
| Ferrous | ||||||
| 15.0 0.600 |
2.00 0.080 |
U50 | Nonferrous | 0.66 26 |
1.3 51 |
10 390 |
| Ferrous | ||||||
| * Peak-to-Peak values are approximately 8-10 times RMS values In high EMI environments (10 V/m), output noise may rise to 0.050VRMS (0.5% resolution) |
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