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Everything Eddy Current


Internal Diameter (ID)

Our range of ID Probes are designed hand in hand with our Cables to offer the best options when working in the field.

Cables if either the Probe or Cable fails, the operator can easily swap them for another and carry on with their inspection reducing interruption to their inspection and the cost of having to replace both the Probe and Cable.  For internal diameter tube inspection our ID probes are ideal for the inspection of non-ferrous tubular heat exchangers, condensers, air conditioning etc.

Probe Selector

Key Features

  • Probe diameters from 7.5 to 150mm, available in 0.1mm steps
  • Dis-connectable and integral probe cables
  • Cable lengths from 3.0 to 30meters
  • Frequency range from 1.4kHz to 1.5MHz, centre frequencies 2.7, 10, 24, 76, 190, 400kHz

When ordering ID probes allow 0.8 to 1.5mm less than the tube diameter, this should be good for typical tube condition and manufacturing tolerances. Where tolerances are poor allow for greater clearance, tape can be used were necessary to reduce probe ‘wobble’.

Internal Diameter Probes Brochure (341.9KB)

Probe Selector

If you know which probe type you are looking for you can send us the item details from the table below to make your order. Copy the product information below and email to

Internal Diameter Probes (PIDxxx)

Examples below, other options available please refer to probe catalogue.

Part #DescriptionHocking Part #
PID140D0024kProbe, Internal Diameter, DIA 14.0mm, Disconnectable, 24kHzIDP140L--24k
PID145D0024kProbe, Internal Diameter, DIA 14.5mm, Disconnectable, 24kHzIDP145L--24k
PID125D0010kProbe, Internal Diameter, DIA 12.5mm, Disconnectable, 10kHzIDP125L--10k
PID155D0010kProbe, Internal Diameter, DIA 15.5mm, Disconnectable, 10kHzIDP155L--10k
PID185D0010kProbe, Internal Diameter, DIA 18.5mm, Disconnectable, 76kHzIDP185L--76k
PID220D0010kProbe, Internal Diameter, DIA 22.0mm, Disconnectable, 76kHzIDP220L--76k
PID140L20F24kProbe, Internal Diameter, DIA 14.0mm, Lemo 12-Way, 20 meters, Flexible Cable, 24kHzIDP140M5C24k
PID145J20F24kProbe, Internal Diameter, DIA 14.5mm, Jaeger 6-Way, 20 meters, Flexible Cable, 24kHzIDP145H5C24k
PID125M20F10kProbe, Internal Diameter, DIA 12.5mm, Lemo 7-Way, 20 meters, Flexible Cable, 10kHzIDP145N5C10k
PID155L20R10kProbe, Internal Diameter, DIA 15.5mm, Lemo 12-Way, 20 meters, Rigid Push/Pull, 10kHzIDP155M5P10k
PID185J20R24kProbe, Internal Diameter, DIA 18.5mm, Jaeger 6-Way, 20 meters, Rigid Push/Pull, 24kHzIDP185H5P24k
PID220M20R76kProbe, Internal Diameter, DIA 22.0mm, Lemo 7-Way, 20 meters, Rigid Push/Pull, 76kHzIDP220N5P76k


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