Probe Membranes


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Cygnus single crystal probes have a protective membrane fitted in front of the probe face to protect it from damage during use on rough corroded surfaces. The membrane also helps the probe face “mould” to uneven corroded surfaces aiding measurement.

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.  

A pack of standard membranes is supplied in each gauge kit.  To order spares and Teflon membranes the details are:

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