Reliable probes for use in hostile or clean environments. Also available as vacuum compatible.
Probe Body Styles
Eddy-Current Probe Model Numbers
Probe diameter determines the measurement range.
Larger Diameter = Larger Range
Probes can be ordered as vacuum compatible.
Standard Measurement Ranges
TheRangeandNear Gapare directly proportional to the diameter of the probe.
Custom ranges are available.
- U3
- Range: 0.5 mm | 0.020 inch
- Near Gap: 0.05 mm | 0.002 inch
- U5
- Range: 1.25 mm | 0.050 inch
- Near Gap: 0.25 mm | 0.010 inch
- U8
- Range: 2.00 mm | 0.080 inch
- Near Gap: 0.35 mm | 0.015 inch
- U12
- Range: 3.50 mm | 0.140 inch
- Near Gap: 0.60 mm | 0.025 inch
- U18
- Range: 5.00 mm | 0.200 inch
- Near Gap: 0.75 mm | 0.030 inch
- U25
- Range: 8.00 mm | 0.320 inch
- Near Gap: 1.25 mm | 0.050 inch
- U38
- Range: 12.5 mm | 0.500 inch
- Near Gap: 1.50 mm | 0.060 inch
- U50
- Range: 15.00 mm | 0.600 inch
- Near Gap: 2.00 mm | 0.080 inch
Mounting Clearances
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
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: -25°C to +125°C | 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
-
Probe Cables
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.
Armored Cable
Armored cable is available on 12 mm (U12) and larger probes.
Mechanical Details
B-Threaded Body: U3B-U18B | U25B-U50B
C-Smooth Body: U3C-U12C
Custom Probes
B – Threaded Body
U3B – U18B
Life-Cycle Status: Active
U3B
- A: M3x.5
- B: 2.0 mm | 0.08 inch
- C: 3.0 mm | 0.12 inch
- D: 21.1 mm | 0.83 inch
- E: 13.0 mm | 0.51 inch
- Range: 0.50 mm | 0.020 inch
- Near Gap: 0.05 mm | 0.002 inch
- Download STEP File
U5B
- A: M5x.8
- B: 3.4 mm | 0.13 inch
- C: 3.0 mm | 0.12 inch
- D: 23.0 mm | 0.91 inch
- E: 18.0 mm | 0.71 inch
- Range: 1.25 mm | 0.050 inch
- Near Gap: 0.25 mm | 0.010 inch
- Download STEP File
U8B
- A: M8x1
- B: 6.2 mm | 0.24 inch
- C: 5.0 mm | 0.20 inch
- D: 25.0 mm | 0.99 inch
- E: 18.0 mm | 0.71 inch
- Range: 2.00 mm | 0.080 inch
- Near Gap: 0.35 mm | 0.015 inch
- Download STEP File
U12B
- A: M12x1
- B: 10.0 mm | 0.39 inch
- C: 7.0 mm | 0.28 inch
- D: 29.0 mm | 1.15 inch
- E: 18.0 mm | 0.71 inch
- Range: 3.50 mm | 0.140 inch
- Near Gap: 0.60 mm | 0.025 inch
- Download STEP File
U18B
- A: M18x1
- B: 15.8 mm | 0.62 inch
- C: 9.0 mm | 0.36 inch
- D: 44.0 mm | 1.74 inch
- E: 31.0 mm | 1.22 inch
- Range: 5.00 mm | 0.200 inch
- Near Gap: 0.75 mm | 0.030 inch
- Download STEP File
U25B – U50B
Life-Cycle Status: Active
U25B
- A: M18x1
- B: 25.0 mm | 0.99 inch
- C: 15.0 mm | 0.59 inch
- D: 61.0 mm | 2.40 inch
- E: 42.0 mm | 1.65 inch
- Range: 8.00 mm | 0.320 inch
- Near Gap: 1.25 mm | 0.050 inch
- Download STEP File
U38B
- A: M18x1
- B: 38.0 mm | 1.50 inch
- C: 20.0 mm | 0.79 inch
- D: 80.0 mm | 3.15 inch
- E: 54.0 mm | 2.13 inch
- Range: 12.5 mm | 0.500 inch
- Near Gap: 1.50 mm | 0.060 inch
- Download STEP File
U50B
- A: M18x1
- B: 50.0 mm | 1.97 inch
- C: 25.0 mm | 0.99 inch
- D: 98.0 mm | 3.86 inch
- E: 69.0 mm | 2.72 inch
- Range: 15.0 mm | 0.600 inch
- Near Gap: 2.00 mm | 0.080 inch
- Download STEP File
C – Smooth Body
U3C – U12C
Life-Cycle Status: Active
U3C
- A: 2.92 mm | 0.115 inch
- B: 2.0 mm | 0.08 inch
- C: 3.0 mm | 0.12 inch
- D: 13.0 mm | 0.51 inch
- E: 5.0 mm | .20 inch
- F; 3.6 mm | 0.14 inch
- Range: 0.50 mm | 0.020 inch
- Near Gap: 0.05 mm | 0.002 inch
- Download STEP File
U5C
- A: 4.90 mm | 0.193 inch
- B: 3.4 mm | 0.13 inch
- C: 3.0 mm | 0.12 inch
- D: 18.0 mm | 0.71 inch
- E: –
- F; –
- Range: 1.25 mm | 0.050 inch
- Near Gap: 0.25 mm | 0.010 inch
- Download STEP File
U8C
- A: 7.90 mm | 0.311 inch
- B: 6.2 mm | 0.24 inch
- C: 5.0 mm | 0.20 inch
- D: 18.0 mm | 0.71 inch
- E: –
- F; –
- Range: 2.00 mm | 0.080 inch
- Near Gap: 0.35 mm | 0.015 inch
- Download STEP File
U12C
- A: 11.89 mm | 0.468 inch
- B: 10.0 mm | 0.39 inch
- C: 7.0 mm | 0.28 inch
- D: 18.0 mm | 0.71 inch
- E: –
- F; –
- Range: 3.50 mm | 0.140 inch
- Near Gap: 0.60 mm | 0.025 inch
- Download STEP File
Custom Probes
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.
