The Polytec OFV-511 is a fiber-optic sensor head for non-contact laser Doppler vibrometry that measures surface vibrations by analyzing frequency shifts in back-scattered laser light. It delivers instantaneous velocity and displacement data when paired with a compatible Polytec vibrometer controller and appropriate decoders. The fiber-optic design enables access to hard-to-reach measurement points while maintaining Class 2 laser safety classification.
Technical Specifications
• Operating Principle: Laser Doppler Interferometry using modified Mach-Zehnder interferometer
• Laser Type: Helium Neon (HeNe), linearly polarized
• Wavelength: 633 nm
• Optical Output Power: < 1 mW
• Laser Safety Classification: Class 2 (II) per IEC/EN 60825-1 and CFR 1040.10/1040.11
• Fiber Optic Cable Length: 2000 mm
• Minimum Bending Radius: 50 mm
• Operating Temperature: 0 °C to 40 °C
• Storage Temperature: -15 °C to 65 °C
• Housing Protection: IP 40 Standard (NEMA 1)
– Key Features
• Non-contact measurement eliminates loading effects on test structures
• Compact fiber-optic delivery system reaches confined or restricted access areas
• Low optical power output ensures safe operation without specialized beam containment
• Measurement outputs depend on controller configuration and installed decoder modules
• Fiber cable terminated with focusing lens for beam delivery and light collection
– Typical Applications
• Vibration analysis of mechanical structures, components, and assemblies
• Modal testing and frequency response characterization
• Quality assurance in rotating machinery and precision equipment
• Research and development vibration studies
– Compatibility & Integration
The OFV-511 sensor head integrates with Polytec vibrometer controllers including the OFV-3001 and OFV-5000. Velocity and displacement measurements are delivered through the controller's signal processing and installed decoder configuration.
