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Testing high speed, rotational machinery is now safer

21 May 2010

A small, robust IP64-rated probe, from Bruel & Kjaer, designed for performing contact-free measurements on rotating or reciprocating machine parts, the MM-0360 works by producing a voltage pulse from each turn of a shaft or cylinder.

Testing high speed, rotational machinery is now safer
Testing high speed, rotational machinery is now safer

The probe is positioned to allow its visible laser beam to face the test object, on to which a small strip of self-adhesive retro-reflective tape is attached. This reflective tape then backscatters the laser energy to a receiver that converts it to a jitter-free signal, suitable for a measurement or recording system.

The use of reflective tape means the probe can be positioned up to 70cm away from test objects, allowing engineers to be at a safer distance when testing many different types of high-speed machinery, encompassing everything from aircraft turbines to washing machines. The unit's compact size also makes it ideal for accessing machine parts contained within restricted areas.
The MM-0360 can operate at rotational speeds of up to 300,000 RPM, enough even for supercharger measurements, as well as low-speed measurements to 0 RPM (dependent on analysis system) for wind turbine and ship propulsion applications.

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