Compression

 

Overview

Compression Transducers .jpg

There are four different offering in single and dual "straight beam″ transducers:

Contact

Applied directly to the flat surfaces of the test material or object, this range of single element transducers are commonly used to measure thickness and to detect flaws on plates, bars, forgings, casting and extrusions. Standard ranges of single compression transducers are available with different frequencies and damping specifications to fit the purpose of the application. The crystal and casing dimensions are also important, per example a smaller diameter can be applied to test slightly curved surfaces and the inclusion of a magnet can hold the transducer to ferrous surfaces.

Twin Crystal

A twin compression transducer is a mix between a contact and a delay line because both crystals (P&C) sit on two very thin, slightly angulated wedges facing each other. These are primarily used to measure thickness, detect flaws and corrosion in thin materials, especially where near surface resolution is required. This range is also ideal for use in general and critical weld inspection.


Delay Line

Delay Line transducers transmit and receive sound waves with one element, coupled to the surface as with compression transducers. The crystal is held off from the test piece surface by a delay block, allowing the inspection to be carried out very close to the test piece surface.


Immersion

Immersion transducers are mainly used for mechanised or automatic systems and in principle, operate in the same way as standard contact compression transducers. Immersion applications take place in immersion tanks filled with water, where the test object is placed on a turntable or roller system so that the object is moved at a constant speed past the transducer. Applications include flaw detection in metal or composite parts inspecting bond testing or online thickness gauging, C-scan or B-scan imaging of components.



Features

Single Compression High Damped (SLH)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • High damped for best resolution.
  • Ceramic wear face and steel wear ring to prolong service life.
  • Stainless steel ergonomic case for good grip and ease of use.

Frequent applications: Ceramics, Porcelain, Composites, Machined Parts, Thickness Measurement.

Single Compression Medium Damped (SLM)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • Medium damped for general use.
  • Ceramic wear face and steel wear ring to prolong service life.
  • Stainless steel ergonomic case for good grip and ease of use.
  • Composite version available see PSLM.

Frequent applications: Ceramics, Composites.

Single Compression Replaceable Membrane (SLF & PSLF)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • Medium damped for general use.
  • Polymer membrane protected face facilities coupling with minimum couplant.
  • Delay lines available
  • Stainless steel ergonomic case for good grip and ease of use.
  • Composite version available see PSLF.

Frequent applications: Castings & Forgings, Bars & Billets, Bond Testing, Laminations.

Single Compression Large Low Frequency (LLF)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • Medium damped for medium bandwidth.
  • Polymer membrane protected face facilities coupling with minimum couplant.
  • Can be used with delay-lines for high temperature inspection.
  • Stainless steel ergonomic case for good grip and ease of use.
  • Frequent applications: Aerospace, Billets, Castings, Forgings.

Single Compression High damped/Low profile (SLP)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • High damped for best resolution.
  • Ceramic wear face and steel wear ring to prolong service life.
  • Low-profile stainless steel ergonomic case to facilitate inspection access.


Small/Large Single Compression Ceramic Face (SHM & LHM)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • Medium damped for medium bandwidth.
  • European Standard Transducer.

Frequent applications: Ceramics, Composites, Machined Parts, Thickness Measurement.

Small/Large Single Compression Replaceable Membrane (SMM & LMM)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • Medium damped for medium bandwidth.
  • European Standard Transducer.

Frequent applications: Bars, Billets, Bond testing, Castings, Lamination, Forgings.

Fingertip Contact Transducers (FCR, FCG & PFC)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • High damped for bandwidth (FCR & PFC).
  • Ceramic wear face and steel wear ring to prolong service life.
  • Stainless steel ergonomic case for good grip and ease of use.

Frequent applications: Castings & Forgings, Bars & Billets, Bond Testing, Laminations, Machined Parts.


Downloads

DateTitleVersionSize 
Sept 2016SLH Specification pdfV1 0.188MB Download
Sept 2016SLM Specification pdfV1 0.142MB Download
Sept 2016SLF & PSLF Specification PDFV1 0.188MB Download
Sept 2016LLF Specification PDFV1 0.209MB Download
Sept 2016SLP Specification PDFV1 0.216MB Download
Sept 2016SLC Specification PDFV1 0.199MB Download
Sept 2016SLG Specification PDFV1 0.149MB Download
Sept 2016FCR FCG & PFC Specification PDFV1 0.234MB Download
Sept 2016RDT & PD Specification PDFV10.220MB Download
Sept 2016IMR IMG & PIM Specification PDFV1 0.272MB Download
Sept 2016D Specification PDFV1 0.148MB Download
Sept 2016CD Specification PDFV10.174MB Download
Sept 2016CDF Specification PDFV10.186MB Download
Sept 2016GEM Specification PDFV1 0.151MB Download
Sept 2016DEI & PDEI Specification PDFV1 0.294MB Download

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