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Eddy-Current Sensor Probes

 

 

Reliable probes for use in hostile or clean environments. Also available as vacuum compatible.

Body Stylesdown | Model Names down | Ranges down| Mounting Clearances down | Environment down | Cables down | Mechanical Detailsdown

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Probe Body Styles

"B" Body Style

eddy-current sensor probe B

Threaded body mounts with two nuts or threaded hole and one nut.

Available in all sizes.

"C" Body Style

eddy-current sensor probe C

Smooth steel body is clamp or set-screw mounted.

Available in 3 mm - 12 mm (U3-U12)

 

Eddy-Current Probe Model Numbers

eddy-current sensor probe model number

Probe diameter determines the measurement range.
Larger Diameter = Larger Range

Probes can be ordered as vacuum compatible.

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Standard Measurement Ranges

The Range and Near Gap are directly proportional to the diameter of the probe.

Custom ranges are available.

cal


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

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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 Mounting Clearances Counterbore Mounting Clearances

 

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Probe Operating Environment

Probe Operating Environments

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

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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.

probe cable length

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.

eddy current probe with armored cable

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

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A

B

C

D

E

Range

Near Gap

3D CAD Files

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 3D CAD File

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 3D CAD File

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 3D CAD File

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 3D CAD File

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 3D CAD File

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U25B - U50B

Life-Cycle Status: Active

large probe  
 

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 3D CAD File

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 3D CAD File

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 3D CAD File

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C- Smooth Body

U3C - U12C

Life-Cycle Status: Active

we we
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A

B

C

D

E

F

Range

Near Gap

3D CAD Files

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 3D CAD File

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  

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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.

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