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Polytec's new RLV-5500 Rotational Laser Vibrometer uses a fiber-optic cable to provide laser power to the small RLV-500 Sensor Head, thus increasing mounting and positioning options without sacrificing precision. The RLV-5500 Controller comes with a 19'' industrial housing and incorporates the signal processing electronics and power supply.

Fields of Application

Polytec's rotational vibrometer measures torsional or angular vibrations, without contact, on arbitrarily shaped structures including engine crankshafts, vehicle axles, marine driveshafts, electrical generator shafts and rotating parts in lithographic machines, printers & photocopiers. Automotive engineers use the rotational vibrometer to develop torsional vibration dampers that reduce engine noise and increase product durability. Faults in gearboxes, compressors and generators cause torsional vibrations at certain system specific frequencies. Measurements are made to:

• Reduce noise and vibration
• Study rotational fatigue
• Improve the precision and quality of tool-making machines
• Monitor and trouble shoot power plant and production machinery
• Speed up adjustment of torsional vibration dampers in vehicle drive shafts
• Study run-up and run-down of machines (order tracking and Campbell plots)

The Sensor Head is available for standoff distances of 70 mm, 200 mm, 400 mm ad 600 mm. An additional deflection unit enables measurements under a 90° angle. The RLV-500 Sensor Head can cope with harsh conditions due to the integrated air wipe and its IP 67-protected housing.

Key Benefits

• Non-Contact
• No added inertial mass
• No telemetry necessary
• Quick setup
• Independent of shaft geometry
• Compatible to any kind of data acquisition
• Improved S/N ratio through digital demodulation and filtering
• Expanded rpm range and high resolution
• Integrated air wipe to cool and protect the optics

Features

• Compact, fiber-coupled sensor head
• Precision measurement of rpm, angular velocity and angular displacement
• Measuring up to 20,000 rpm at 10 kHz bandwidth
• IP 67 protected sensor
• Sophisticated filters for order tracking