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Probe Details
Thread Detection Probes Accessories Discontinued Products FAQ
Reliable probes for use in hostile or clean environments. Also available as vacuum compatible.
Body Styles
| Model Names | Ranges | Mounting Clearances | Environment | Cables | Mechanical Details
"B" Body Style |
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Threaded body mounts with two nuts or threaded hole and one nut. Available in all sizes. |
"C" Body Style |
 |
Smooth steel body is clamp or set-screw mounted. Available in 3 mm - 12 mm (U3-U12) |
Probe diameter determines the measurement range.
Larger Diameter = Larger Range
Probes can be ordered as vacuum compatible.
The Range and Near Gap are directly proportional to the diameter of the probe. Custom ranges are available. |
 |
Probe |
Range |
Near Gap |
||
| mm | inch | mm | inch |
|
U3 |
0.50 | 0.020 | 0.05 | 0.002 |
U5 |
1.25 | 0.050 | 0.25 | 0.010 |
U8 |
2.00 | 0.080 | 0.35 | 0.015 |
U12 |
3.50 | 0.140 | 0.60 | 0.025 |
U18 |
5.00 | 0.200 | 0.75 | 0.030 |
U25 |
8.00 | 0.320 | 1.25 | 0.050 |
U38 |
12.5 | 0.500 | 1.50 | 0.060 |
U50 |
15.0 | 0.600 | 2.00 | 0.080 |
To prevent mounting hardware or other metallic objects from interfering in precision measurements, eddy-current sensor probes must be mounted with the following clearances based on probe diameter (X).
Standard Mounting |
Counterbore Mounting |
 |
 |
Probe Operating EnvironmentsStandard 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): High Temperature Version Not Available |
| U5-18 Probes | Standard Probes: High Temperature Probes: |
|
| U25-50 Probes | Standard Probes: High Temperature Probes: |
Standard probes have PUR (polyurethane) jackets. High-Temperature probes have FEP jackets. FEP cables can be custom ordered for standard temperature range probes.
More details on probe cabling are available in our Eddy-Current Probe Cabling Considerations TechNote.
B-Threaded Body: U3B-U18B | U25B-U50B
C-Smooth Body: U3C-U12C
Custom Probes
Life-Cycle Status: Active
 |
 |
A |
B |
C |
D |
E |
Range |
Near Gap |
3D CAD Files |
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| mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch |
|||
U3B |
M3x.5 | 2.0 | 0.08 | 3.0 | 0.12 | 21.1 | 0.83 | 13.0 | 0.51 | 0.50 | 0.020 | 0.05 | 0.002 |  |
U5B |
M5x.8 | 3.4 | 0.13 | 3.0 | 0.12 | 23.0 | 0.91 | 18.0 | 0.71 | 1.25 | 0.050 | 0.25 | 0.010 | |
U8B |
M8x1 | 6.2 | 0.24 | 5.0 | 0.20 | 25.0 | 0.99 | 18.0 | 0.71 | 2.00 | 0.080 | 0.35 | 0.015 | |
U12B |
M12x1 | 10.0 | 0.39 | 7.0 | 0.28 | 29.0 | 1.15 | 18.0 | 0.71 | 3.50 | 0.140 | 0.60 | 0.025 | |
U18B |
M18x1 | 15.8 | 0.62 | 9.0 | 0.36 | 44.0 | 1.74 | 31.0 | 1.22 | 5.00 | 0.200 | 0.75 | 0.030 | |
Life-Cycle Status: Active
 |
A |
B |
C |
D |
E |
Range |
Near Gap |
3D CAD Files |
||||||||
| mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | ||||
U25B |
M18x1 | 25.0 | 0.99 | 15.0 | 0.59 | 61.0 | 2.40 | 42.0 | 1.65 | 8.00 | 0.320 | 1.25 | 0.050 | |
|
U38B |
M18x1 | 38.0 | 1.50 | 20.0 | 0.79 | 80.0 | 3.15 | 54.0 | 2.13 | 12.5 | 0.500 | 1.50 | 0.060 | |
|
U50B |
M18x1 | 50.0 | 1.97 | 25.0 | 0.99 | 98.0 | 3.86 | 69.0 | 2.72 | 15.0 | 0.600 | 2.00 | 0.080 | |
|
Life-Cycle Status: Active
 |
 |
 |
A |
B |
C |
D |
E |
F |
Range |
Near Gap |
3D CAD Files |
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| mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch |
||
U3C |
2.92 | 0.115 | 2.0 | 0.08 | 3.0 | 0.12 | 13.0 | 0.51 | 5.0 | 0.20 | 3.6 | 0.14 | 0.50 | 0.020 | 0.05 | 0.002 | |
U5C |
4.90 | 0.193 | 3.4 | 0.13 | 3.0 | 0.12 | 18.0 | 0.71 | - | - | - | - | 1.25 | 0.050 | 0.25 | 0.010 | |
U8C |
7.90 | 0.311 | 6.2 | 0.24 | 5.0 | 0.20 | 18.0 | 0.71 | - | - | - | - | 2.00 | 0.080 | 0.35 | 0.015 | |
U12C |
11.89 | 0.468 | 10.0 | 0.39 | 7.0 | 0.28 | 18.0 | 0.71 | - | - | - | - | 3.50 | 0.140 | 0.60 | 0.025 | |
We are committed to working with our customers to ensure their success by providing optimized sensing solutions. Optimized solutions often require custom probe shapes and styles. We will work with you to develop an effective solution for you application.
We are built for customization.
