Fluke 805
Vibration Meter
See: 805FC

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Product Information
Datasheet 1.6 MB PDF
Manual 2.01 MB PDF
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  • Innovative sensor design minimizes measurement variations caused by device angle or contact pressure
  • Consistent data quality at both low and high frequency ranges
  • Four-level severity scale assesses urgency 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+ technology 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 Spot IR Sensor increases diagnostic capabilities
  • On-board memory holds and saves 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

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.

Fluke 805 with Crest Factor + takes the confusion out of bearing assessment

The original Crest Factor is used by vibration analysts to identify bearing faults. The Fluke 805's Crest Factor is defined as the ratio of the peak value/RMS value of a time domain vibration signal.

A key limitation of using Crest Factor to identify bearing faults is that the Crest Factor does not increase linearly as the bearing degrades. 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. To keep things simple, 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 Fluke 805

Trending, or repeated vibration measurements kept in a spreadsheet over time, is the best method to track machine health. With the Fluke 805 Vibration Tester you can easily:
  • Export your result to Excel through USB connection
  • Trend the readings with the pre-built Excel templates and plot graphs
  • ompare the overall vibration readings to ISO Standards (10816-1, 10816-3, 10816-7)

Import measurements from the Fluke 805 Vibration Meter to an Excel template on your PC in order to trend the bearing parameters: overall vibration, CF+, and temperature. Looking at just the number alone for the overall vibration or temperature might not be of much benefit to the operator or technician if they don’t know what the number means. The user may not know what is normal or what indicates a problem.

If measurements taken on the operator rounds are easily loaded into Excel, then the trend will show patterns of something that is becoming abnormal. The user can now see a clear picture of the changing bearing condition and deteriorating health of the machine.

Ideal for use with:
  • Reciprocating (Open motor and compressor separate)
  • Reciprocating (Hermetic motor and compressor)
  • Centrifugal (Hermetic or Open Motor
  • Reciprocating
  • Rotary screw
  • Centrifugal with or without external gearbox
  • Centrifugal – internal gear (axial meas.)
  • Centrifugal – internal gear (radial meas.)
  • Belt-driven Fans 1800 to 3600 RPM
  • Belt-driven fans 600 to 1799 RPM
  • General direct drive fans (direct coupled)
  • Vacuum blowers (belt or direct drive)
  • Large forced draft fans (fluid film brgs.)
  • Large induced draft fans (fluid film brgs.)
  • Shaft-mounted integral fan (extended motor shaft)
  • Axial flow fans (belt or direct drive)
  • Lobe-type rotary blowers (belt or direct drive)
  • Multi-stage centrifugal blowers (direct drive)
tower drives
  • Long, hollow drive shaft (motor)
  • Belt drive (motor and fan - all arrangements)
  • Direct drive (motor and fan - all arrangements
(rolling element
  • Single stage gearbox
  • Vertical pumps (12' to 20' height)
  • Vertical pumps (8' to 12' height)
  • Vertical pumps (5' to 8' height)
  • Vertical pumps (0' to 5' height)
  • Horizontal centrifugal end suction pumps – direct coupled
  • Horizontal centrifugal double suction pumps – direct coupled
  • Boiler feed pumps (turbine or motor driven)
Machine tools
  • Motor
  • Gearbox input
  • Gearbox output
  • Spindles – roughing operations
  • Spindles – machine finishing
  • Spindles – critical finishing
Displacement Pumps
  • Positive displacement horizontal piston pumps (under load)
  • Positive displacement horizontal gear pumps (under load)
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
(CF+ measurement)
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")
External sensor
Note: Fluke supports, but does not provide, external sensors.
Frequency range 10 Hz to 1,000 Hz
Bias voltage
(to supply power)
20 V dc to 22 V dc
Bias Current
(to supply power)
Maximum 5 mA
Calibration Factory calibration required
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
discharge: Burst
Standard EN 61000-4-2
Standard EN 61000-4-3
RE Standard CISPR 11, Class A
Environmental Specifications
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)
Storage altitude
Sea Level to 3,048 meters (10,000 feet)
IP rating IP54
Vibration limit 500g peak
Drop test 1 meter
General Specifications
Battery type AA (2) Alkaline or Lithium-ion 2 V dc
Battery life 250 measurements
Size (L x W x H) 25.72 cm x 16.19 cm x 9.84 cm (10.13 in x 6.38 in x 3.875 in)
Weight 1.16 kg (2.55 lb)
Connectors USB mini-B 7-pin, stereo audio output jack (3.5 mm Audio Plug), external sensor jack (SMB connector)
Ordering Information
Model Description Buy Online Price
MFR ID: 4094385
Fluke 805 Vibration Meter Discontinued
See: 805FC
Related Products
805 FC
MFR ID: 4489229
Fluke 805 FC Vibration Meter with Fluke Connect Buy Now $1,999.99
Included Accessories
  • 1 - USB cable
  • 1 - Storage case
  • 1 - Belt holster
  • 1 - Quick reference guide
  • 1 - CD-ROM (includes MS Excel template and documentation)
  • 2 - AA batteries
Optional Accessories
Extended Warranty CarePlans
MFR ID: 4112678
Fluke G1P-GROUP1 Gold CarePlan - Extends warranty from 1 to 3 yrs & includes annual NIST calibration Buy Now Sale $242.99
(Reg. $269.99)
MFR ID: 4112706
Fluke S1P-GROUP1 Silver CarePlan - Extends warranty from one to three years Buy Now Sale $48.59
(Reg. $59.99)