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Fluke 805 Vibration Meter

Understand equipment conditions with vibration analysis, hand held vibration test meters and systems for troubleshooting and diagnosing mechanical problems.

  • The Reliable, Repeatable, Accurate Way to Check Bearings and Overall Vibration

    Make go or no-go maintenance decisions with confidence. The Fluke 805 Vibration Meter is the most reliable vibration screening device available for frontline mechanical troubleshooting teams that need repeatable, severity-scaled readings of overall vibration and bearing condition.

    What Makes the 805 the Best Choice?

    • A meter – not a pen – that measures overall vibration as well as specific variables like bearing condition and temperature, to provide a more complete picture
    • A combination vibration and force sensor tip that compensates for user variance (force or angle) yielding accurate, repeatable readings
    • A four-level severity scale and onboard processor calculate bearing condition and overall vibration using easy-to-understand textual alerts (Good, Satisfactory, Unsatisfactory, Unacceptable)
    • Sensor sensitivity can read a wide range of frequencies (10 to 1,000 Hz and 4,000 to 20,000 Hz) covering most machine and component types
    • Straight-forward user interface that minimizes the user inputs to RPM range and equipment type
  • Features and Benefits

    • Innovative sensor design helps minimize measurement variations caused by device angle or contact pressure
    • Consistent data quality at both low and high frequency ranges
    • Four-level scale indicates severity of problems for overall vibration and bearing condition
    • Exportable data via USB
    • Trending in Microsoft® Excel using built-in templates
    • Overall vibration measurement (10 Hz to 1,000 Hz) for acceleration, velocity and displacement units of measurement for a wide variety of machines
    • Crest Factor+ provides reliable bearing assessment using direct sensor tip measurements between 4,000 Hz and 20,000 Hz
    • Colored lighting system (green, red) and on-screen comments indicate how much pressure needs to be applied to take measurements
    • Temperature measurement with Infrared Temperature Sensor increases diagnostic capabilities
    • On-board memory holds up to 3,500 measurements
    • Audio output for listening to bearing tones directly
    • External accelerometer support for hard to reach locations
    • Flashlight for viewing measurement locations in dark areas
    • Large screen with high resolution for easy navigation and viewing

    Use the 805 to check the following machine categories:

    • Chillers (refrigeration)
    • Fans
    • Cooling tower drives
    • Centrifugal pumps
    • Positive displacement pumps
    • Air compressors
    • Blowers
    • Generic gearboxes (rolling element bearings)
    • Machine tools (motor, gearboxes, spindles, etc.)

    What is Crest Factor+?

    Vibration meter measurements

    Crest Factor+ is a new proprietary algorithm (or technology) that takes the confusion out of bearing assessment. The original Crest Factor is used by vibration analysts to identify bearing faults. It is defined as the ratio of the peak value/RMS value of a time domain vibration signal.

    A key limitation of the original Crest Factor algorithm is that it does not increase linearly as the bearing degrades, making it very difficult to determine the severity of mechanical issues. In fact, the Crest Factor can actually decrease as a bearing nears catastrophic failure due to large RMS values.

    In order to overcome this limitation, Fluke uses a proprietary algorithm known as Crest Factor+ (CF+). CF+ values range from 1 to 16. As the bearing condition worsens, the CF+ value increases, ensuring the user is easily able to recognize the severity of the problem. To make things even simpler, Fluke has also included a four-level severity scale that identifies the bearing health as Good, Satisfactory, Unsatisfactory or Unacceptable.

    Exporting and trending with the 805

    Click image to enlarge

    Trending, or repeated vibration measurements kept in a spreadsheet over time, is the best method to track machine health. With 805 you can easily:

    • Export your result to Excel through USB connection
    • Trend the readings with the pre-built Microsoft® Excel templates and plot graphs
    • Compare the overall vibration readings to ISO Standards
      (10816-1, 10816-3, 10816-7)
  • Vibration Meter
    Low frequency range (overall measurement) 10 Hz to 1,000 Hz
    High frequency range (CF+ measurement) 4,000 Hz to 20,000 Hz
    Severity levels Good, satisfactory, unsatisfactory, unacceptable
    Vibration limit 50 g peak (100 g peak-peak)
    A/D converter 16-bit
    Signal to noise ratio 80 dB
    Sampling rate Low frequency
    20,000 Hz
    High frequency 80,000 Hz
    Real time clock backup Coin battery
    Sensitivity 100 mV g ±10%
    Measurement range 0.01 g to 50 g
    Low frequency range (overall measurement) 10 Hz to 1,000 Hz
    High frequency range 4,000 Hz to 20,000 Hz
    Resolution 0.01 g
    Accuracy At 100 Hz ±5% of measured value
    Amplitude Units
    Acceleration g, m/sec²
    Velocity in/sec, mm/sec
    Displacement mils, mm
    Infrared Thermometer (Temperature Measurement)
    Range -20°C to 200°C (-4°F to 392°F)
    Accuracy ±2°C (4°F)
    Focal length Fixed, at ~3.8 cm (1.5 in)
    External sensor
    Fluke supports but does not provide external sensors
    Frequency range 10 Hz to 1,000 Hz
    Bias voltage (to supply power) 20 VDC to 22 VDC
    Bias current (to supply power) Maximum 5 mA
    External interfaces USB 2.0 (full speed) communication
    Data capacity Database on internal flash memory
    Upgrade Through USB
    Memory Up to 3,500 measurements
    Radiated Emission
    Electrostatic discharge: burst Standard EN 61000-4-2
    Electromagnetic interference Standard EN 61000-4-3
    RE Standard CISPR 11, Class A
    Operating temperature -20°C to 50°C (-4°F to 122°F)
    Storage temperature -30°C to 80°C (-22°F to 176°F)
    Operating humidity 10% to 95% RH (non-condensing)
    Operating/storage altitude Sea level to 3,048 meters (10,000 feet)
    IP rating IP54
    Vibration limit 500 g peak
    Drop test 1 meter
    General Specifications
    Battery type AA (2) Lithium Iron Disulfide
    Battery life 250 measurements
    Size (L x W x H) 24.1 x 7.1 x 5.8 cm (9.5 x 2.8 x 2.3 in)
    Weight 0.40 kg (0.89 lb)
    Connectors USB mini-B 7-pin, stereo audio output jack (3.5 mm Audio Plug), external sensor jack (SMB connector)
    • Models
      Model Name Description  
      Fluke 805 Fluke 805 Vibration Meter


      • USB cable
      • Storage case
      • Belt holster
      • Quick reference guide
      • CD-ROM (includes MS Excel template and documentation)
      • Two (2) AA batteries
    • Manuals
      805 用户手册 Download
      805 Uživatelská příručka Download
      805 Brugsanvisning Download
      805 Handleiding Download
      805 Users Manual Download
      805 Käyttöohje Download
      805 Mode d'emploi Download
      805 Bedienungshandbuch Download
      805 Manuale per l’uso Download
      805 Brukerhåndbok Download
      805 Instrukcja użytkownika Download
      805 Manual do usuário Download
      805 Manualul utilizatorului Download
      805 Руководство пользователя Download
      805 Manual de uso Download
      805 Användarhandbok Download
      805 快速参考指南 Download
      805 Hurtig opslagsguide Download
      805 Beknopte naslaggids Download
      805 Quick Reference Guide Download
      805 Pikahakuopas Download
      805 Guide de référence rapide Download
      805 Kurzanleitung Download
      805 Guida di riferimento rapido Download
      805 Hurtigreferanse Download
      805 Guia de Consulta Rápida Download
      805 Краткое руководство пользователя Download
      805 Guía de referencia rápida Download
      805 Snabbreferensguide Download
    • Application Notes
      Benefits of vibration testing Download
      They are better together - Ti400 Infrared Camera and Fluke 805 Vibration Meter Download
    • Brochures
      Fluke 805 Vibration Meter Product Brochure Download
      Mechanical Family Brochure Download
    • Data Sheets
      805 Vibration Meter Data Sheet Download
      Fluke 805 Vibration Meter Download
    • Technical Briefs
      Fluke 810 and 805 Vibration Calibration Policies Download