Fluke 805 Data Sheet Vibration Meter

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Fluke 805

Vibration Meter

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 measure-

ment 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 prob-

lems 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 naviga-

tion and viewing

Technical Data

2 Fluke Corporation Fluke 805 Vibration Meter

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 iden-

tify 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.

What is Crest Factor +?

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.

Bearing Vibration

(CF+)

Overall Vibration

IR Temperature

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

Sample trend plot using the Fluke 805 trending template.

• 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

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

3 Fluke Corporation Fluke 805 Vibration Meter

Use the Fluke 805 Vibration Meter to

check these machine categories:

4 Fluke Corporation Fluke 805 Vibration Meter

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. (800) 443-5853 or

Fax (425) 446-5116

In Europe/M-East/Africa +31 (0) 40 2675 200 or

Fax +31 (0) 40 2675 222

In Canada (800)-36-FLUKE or

Fax (905) 890-6866

From other countries +1 (425) 446-5500 or

Fax +1 (425) 446-5116

Web access: http://www.fluke.com

©2012 Fluke Corporation.

Specifications subject to change without notice.

Printed in U.S.A. 4/2012 4151049A_EN

Modification of this document is not permitted

without written permission from Fluke Corporation.

Fluke. Keeping your world

up and running.®

Technical specifications

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

Sensor

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

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

Ordering information

Fluke-805 Vibration Meter

Includes: 805 Vibration Meter, USB cable,

storage case, belt holster, quick reference

guide, CD-ROM (includes MS Excel template

and documentation), and two AA batteries

Environmental

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) 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)