Single Crystal Ultrasonic Probes
Single crystal probes are particularly suited to read through and ignore coatings. They are used with our gauges in Multiple-Echo mode. Constructed from stainless steel, they have a soft face incorporating a replaceable wear membrane. This protects the probe face ensuring years of reliable, accurate service.
Probe Membranes
Cygnus single crystal probes have a protective membrane fitted in front of the probe face to protect it from damage during use. The membrane also helps the probe face “mould” to surfaces being measured.
The performance of the probe depends on the condition of the membrane and how well it has been fitted. Cygnus recommends membranes are replaced frequently as a precaution or at the first sign of any scoring, tearing or damage.
Membranes are available in two materials, the standard Polyurethane membrane is suitable for surface temperatures up to 75°C (167°F), the Teflon membrane is suitable for surface temperatures up to 150°C (302°F) with a maximum contact time of 5 seconds.
Membrane Couplant
Membrane couplant needs to be used between the membrane and the probe face. This creates a thin layer of oil that allows the ultrasound to pass through.
A 25 ml bottle of Membrane Couplant is supplied in each gauge kit.
Knurled Rings and Membrane Locking Ring Keys
Supplied with every single crystal probe, the knurled ring holds the membrane in place. The membrane key is used to unscrew and screw in the locking ring which the membrane is fitted into.
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