Fluke 805 Data Sheet

Fluke 805

Vibration Meter

Now compatible with Fluke
Connect

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 Fluke 805 the most reliable
vibration screening device available?

• 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

• Compare vibration levels with ISO-10816 severity
scales and store results to the Fluke Connect Cloud

• Get authorization to take next steps in an instant if
machine health is at risk via Fluke Connect™ Share­Live™ video call

• 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

• 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

™ Mobile App

Technical Data

Built with

See it. Save it. Share it.
All the facts, right in the field.

Fluke Connect with ShareLive™ is the only wireless measurement system
that lets you stay in contact with your entire team without leaving the
field. The Fluke Connect mobile app is available for Android™ (4.3
and up) and iOS (4s and later) and works with over 20 different Fluke
products—the largest suite of connected test tools in the world. And more
are on the way. Go to the Fluke website to find out more.

Make the best decisions faster than ever before by viewing all
temperature, mechanical, electrical and vibration measurements for
each equipment asset in one place. Get started saving time and
increasing your productivity.

Download the app at:

Smart phone not included with purchase.

What is Crest Factor +?

What is Crest Factor +?

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. It 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.

High Frequency

4,000 Hz to 20,000 Hz

Overall Vibration

Frequency Range

10 Hz to 1,000 Hz

Temperature

-20 °C to 200 °C

Bearing Vibration
(CF+)

Overall Vibration

IR Temperature

Exporting and Trending

with the 805

Export and Trend in Excel

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 Excel

templates and plot graphs

• Compare the overall vibration readings to ISO

Standards (10816-1, 10816-3, 10816-7)

Import measurements from the 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.

Sample trend plot using the Fluke 805 trending template.

2 Fluke Corporation Fluke 805 Vibration Meter

Use the Fluke 805 Vibration Meter to

check these machine categories:

Chiller (refrigeration)

• Reciprocating (Open motor and compressor

separate)

• Reciprocating (Hermetic motor and compressor)

• Centrifugal (Hermetic or Open Motor

Fans

• 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 intergral fan (extended motor shaft)

• Axial flow fans (belt or direct drive)

Cooling tower drives

• Long, hollow drive shaft (motor)

• Belt drive (motor and fan - all arrangements)

• Direct drive (motor and fan - all arrangemetns

Centrifugal Pumps

Note: height is measured from grade to top motor bearing

• 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)

Positive Displacement Pumps

• Positive displacement horizontal piston pumps
(under load)

• Positive displacement horizontal gear pumps (under
load)

Air compressors

• Reciprocating

• Rotary screw

• Centrifugal with or without external gearbox

• Centrifugal – internal gear (axial meas.)

• Centrifugal – internal gear (radial meas.)

Blowers

• Lobe-type rotary blowers (belt or direct drive)

• Multi-stage centrifugal blowers (direct drive)

Generic gearboxes (rolling element bearings)

• Single stage gearbox

Machine tools

• Motor

• Gearbox input

• Gearbox output

• Spindles – roughing operations

• Spindles – machine finishing

• Spindles – critical finishing

3 Fluke Corporation Fluke 805 Vibration Meter

Technical specifications

Vibration meter

Low frequency range

10 Hz to 1,000 Hz

(overall measurement)
High frequency range

4,000 Hz to 20,000 Hz

(CF+ measurement)
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

Sensor

Sensitivity 100 mV / g ± 10%
Measurement range 0.01 g to 50 g
Low frequency range

10 Hz to 1,000 Hz
(overall measurement)

High frequency range

4,000 Hz to 20,000 Hz
(CF+ measurement)

Resolution 0.01 g
Accuracy At 100 Hz ± 5 % of measured value

Amplitude units

Acceleration g, m/sec

2

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

Firmware

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

Electrostatic discharge: Burst Standard EN 61000-4-2
Electromagnetic interference Standard EN 61000-4-3
RE Standard CISPR 11, Class A

(RF connection time (binding time) can take up to 1 minute.)

Environmental

Operating

-20 °C to 50 °C (-4 °F to 122 °F)

temperature
Storage

-30 °C to 80 °C (-22 °F to 176 °F)

temperature
Operating

humidity
Operating/

Storage altitude

10 % to 95 % RH
(non-condensing)

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) 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)
Fluke Connect™

mobile app

Yes
compatible

Connectors USB mini-B 7-pin, external sensor

jack (SMB connector)

Ordering information

Fluke-805 FC Vibration Meter

Includes: 805 FC Vibration Meter, USB
cable, storage case, belt holster, quick
reference guide, CD-ROM (includes MS
Excel template and documentation), and
four AA batteries

Fluke. Keeping your world
up and running.

Fluke Corporation
PO Box 9090, Everett, WA 98206 U.S.A.

Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands

For more information call:
In the U.S.A. [phone] or
Fax [phone]
In Europe/M-East/Africa [phone] or
Fax [phone]
In Canada (800)-36-FLUKE or
Fax [phone]
From other countries [phone] or
Fax [phone]
Web access: http://www.fluke.com

©2012, 2014 Fluke Corporation.
Specifications subject to change without notice.
Printed in U.S.A. 3/2014 6002302B_EN

Modification of this document is not permitted
without written permission from Fluke Corporation.

®

4 Fluke Corporation Fluke 805 Vibration Meter