vb8 Portable Data Collector, Analyzer andBalancer
Datasheet

Bently Nevada Machinery Condition Monitoring

116M5343 Rev. JDescription
The vb8 Portable Data Collector, Analyzer and Balancer
instrument is a four-channel vibration data collector,analyzer and balancer. You can use this device for on-routeand off-route data collection, machine-side analysis anddiagnosis as well as on-site dynamic balance correction.
The vb8 Portable Data Collector, Analyzer and Balancer iscertified for Class 1 Division 2 hazardous areas. It isergonomically designed and lightweight for all day comfort.
The vb8 provides recordings with up to 12,800 lines ofresolution and up to 80 kHz Fmax. Our patented adaptive
settling algorithm and 6Pack recording system offer quick,
one-step data recording.
The vb8 Portable Data Collector, Analyzer and Balancer has
plenty of storage and long battery life, and is backed by a five
year warranty.
The vb8 is one of Bently Nevada hardware monitoring assetsthat work with System 1 software.

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet

116M5343 Rev. JThe vb8 Portable Data Collector, Analyzer
and Balancer offers the following features:lllllllllllllllllll

Four channel simultaneous recordings
Two-plane balancing with up to 4sensors
Support for acceleration, velocity,displacement, DC-coupled, current andvoltage output sensors
Triax-enabled
12,800 lines FFT resolution
Supports 80 kHz Fmax
1 GB memory
Spectrum and waveform recordings
Demodulation for early detection ofrotating machinery problems such as
bearing faults
Unique 6Pack recording system
Full analysis capabilities such as timesynchronous averaging, coastdown andrunup, bump test, cross-channel phase,orbit plot, and long time waveform
Modal Impact Testing and Cross Channel
Spectrum (ODS)
Ability to export data in Universal File
Format (UFF) for additional analysis inODS software such as VibrantTechnology ME'scope
Numeric parameter input via keypad withtrend and alarm capability
Sensor cable self-test feature
Flex feature to add Remote Comms
USB host port for data transfer to external
USB drive
Upgradable Proflash system and freefirmware updates for 5 years
Five-year warranty on the instrument
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vb8 Portable Data Collector, Analyzer and BalancerDatasheet

116M5343 Rev. J

Specifications

Tachometer Input

Sensors
Sensorinput

Four channels simultaneous
sampling

Compatible Accelerometer, velocity,sensor
displacement, current, voltage
types
output and 4 to 20 mA
AC coupled 16 V peak-peak Allows for ± 8 V
range
sensor output swing (± 80 g)
DC coupled 0 V to 20 V, -10 V to 10 V, -20 V toranges
0V

Supported
sensortypes

Laser Tach, Contact, TTL Pulse,
Keyphasor

Powersupply tosensor

5 V, 50 mA

TTL pulse
rating

3.5 V (4 mA) min 28 V (5 mA)
max Off-state 0.8 V

Instrument has opticallyisolated input

Keyphasor* 7.7 ± 0.5 V, 13.2 ± 0.8 V, 18.5 ± 1 Vthresholds
Nominally 8 V, 13 V, 18 V

E.g. For reading prox-probe gap
Connectors 1 x BNC (CH1) 1 x LEMO
(CH2/CH3/CH4)

Speed
range

Safety feature: Break-free inline
connector

10 RPM to 300,000 RPM (0.2 Hz to5 kHz)
Pulse width at least 0.1 ms

Analog todigitalconversion

24-bit ADC

Accuracy

Sensorexcitation
current

0 mA or 2.2 mA (configurable),
24 V maximum

Output toUp to 140 Hz (8400 CPM)
drive strobe
Typical Depends on strobe typeSpecial cable required

2.2 mA required power for
IEPE/ICP type accelerometer

Parameter Indication

Sensordetection

Warns if short circuit or notconnected

Maximumlevels(peak)Tachometer Sensor> 1000 g (10,000 m/s2)> 1000 in/sec (25,000 mm/s)> 20 in (500 mm)> 10,000 amps
Effective limit is sensor sensitivity
and output voltage

Sensor type Laser sensor with reflective tapeSensor triggers on beamreflection
Lasersensor
range± 0.1 %

10 cm to 2 m nominal Range
depends on size of reflective
tape

3/10

Dynamic
signalrange> 95 dB

Harmonicdistortion

Less than -70 dB typical

typical at 400 line resolution

Other distortions and noise arelower

vb8 Portable Data Collector, Analyzer and Balancer
DatasheetUnits

116M5343 Rev. J

Spectrum Display

g or m/s2 or adB in/s or mm/sor vdB mil or mm or µm adB,vdB, amps, user defined

Fmax ranges

25, 50, 100, 125, 150, 200, 300,400, 500, 600, 800, 1000, 1200,1600, 2000, 2500, 3000, 4000,5000, 6000, 8000, 10,000,15,000, 20,000, 30,000, 40,000,60,000, 80,000 Hz Or
equivalent CPM values Or
orders-based from 1X to 999X

Fmin possible
range

0 to Fmax± 1% of readings approximately
0.1 dB

Resolution

400, 800, 1600, 3200, 6400,12,800 lines

For AC signal: % of reading For
DC signal: % of full scale

Frequency
scale

Hz, CPM, Orders Linear scalewith zooming≤ 0.1 dB 100 Hz to 10 kHz
High≤ 3 dB > 10 kHz to 40 kHz
frequency
attenuation Attenuation tolerances are inaddition to base accuracy.

Amplitude
scale

Acceleration, velocity,
displacement, current,voltage, user defined Linear orlog scales, auto or manual
scaling≤ 0.1 dB 10 Hz to < 100 HzAC
≤ 3 dB 1 Hz to < 10 Hz
coupling
attenuation

Windowshapes

Hanning Rectangular

Overlap(0, 12.5, 25, 37.5, 50, 62.5, 75,87.5) %0-peak, peak-peak or RMS
Auto-scale by 1000x whenrequired
US and SI options for adB andvdB
Magnitude& cursors

Overall RMS value Waveform
True pk-pk Dual cursors
Harmonics
Digital readouts on chart

Baseaccuracy

Attenuation
due toIntegration(normalmode)≤ 0.1 dB 10 Hz to < 100 Hz≤ 1.5 dB 1 Hz to < 10 Hz

Instrument zeroes all spectral
lines below Fmin.

Depends on Fmax andnumber of lines

Values apply to single
integration. (Acceleration tovelocity)
Double the values for double
integration (Acceleration todisplacement)

Attenuation ≤ 0.1 dB 1 Hz to < 100 Hz≤ 1.5 dB 0.2 Hz to < 1 Hz
due toIntegration Applies when coupling = DC and(lowFmax ≤ 100 Hz
frequencymode)

Number ofaverages

1, 2, 4, 8, 16, 32, 64, 128

Averagingtypes

Linear, exponential, peak hold,synchronous

Increases sampling timeproportionally

Demodulation 23 bandwidth options Frombandwidths
125 Hz to 1250 Hz Up to 16 kHz to20 kHz

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vb8 Portable Data Collector, Analyzer and Balancer
Datasheet

6Pack116M5343 Rev. J

Up to 40 kHz and 3200 lines (1channel) Up to 20 kHz and1600 lines (3 channels)
Spectrum and waveform for
low-frequency, highfrequency and demodulation

Order tracking Up to 6 kHz Fmax Ordersbased

structure

No limits are applied 50
character names

Max folder
size

10,000 measurement locations

Modalanalysis

CH1 for hammer Up to 3
response channels ≤ 40 kHz
Coherence and FRF(Accelerance / Mobility /Compliance)

Tachometer required
Mounted on high-speed shaft
Order tracking < -65 dB- Distortion
Within 50% to 200% speed
variation during recording

Cross
channelspectrumWaveform Display

BalancingNumber ofsamples

1024, 2048, 4096, 8192, 16,384,
32,768Time scale

10 ms to 512 seconds or orders
based from 1 to 999 revs

25 Hz to 40 kHz

Long time
waveform
duration14.7 million samples (total overchannels)

Dual 1 GB non-volatile flash
memories Database mirror
copy on second flash memory

Datastorage

Folders/machines/points/locations/routes

Speed range

30 to 60 000 RPM

Remove trial
weights

Angle 0° to 360° Fixed position
Circumference arc

Leave or remove trial weights
for final balance
Automatic recalculation

Logging and Analysis

Datastorage

Up to 2 planes 2 sensors

E.g. Weights on fan blades,
linear dist. aroundcircumference

E.g. for Fmax 1 kHz, Fsample =2.56 kHz and Duration = 1.6 hrs

Instrument screen, transfer toAscent or System 1, XML, UFF fileexport via USB

Planes

Weightmodes

20 kHz max for two or morechannels

Outputformats

Coherence and FRF forimporting into ODS software

Measurement Acceleration Velocity
typeDisplacement

1, 2, 4, 8, 16, 32, 64, 128
Timesynchronous Only available whenaverages
tachometer triggered
Long timewaveform
Fmax

1 reference Up to 3 other sensors

Manual data
entry

Yes

Storage ofbalancingjobs

In the data structure wheremachine vibration readings
are stored

Allows re-entry of previous
balance jobs

No limits applied

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vb8 Portable Data Collector, Analyzer and Balancer
Datasheet

116M5343 Rev. J

Display and Communication

MechanicalDisplaySize

9.9" W x 5.8" L x 2.4" H(252 x 148 x 60 mm)

Weight

2.7 lb (1.2 kg) Including batteryand strap

Graphic Grayscale LCD LED
Backlight

Resolution & size 480 x 320 (HVGA),
5.5" (140 mm)
Readable in direct sunlight
Supported
Languages

Environmental Limits

English, Chinese, French,
German, Japanese,
Portuguese, Russian andSpanish

Operating
14°F to 122°F (-10 to 50°C)
temperature
Storage-4°F to 140°F (-20 to 60°C), 95%
temperature RH& humidity
Up to 95°F (35°C), 85% RH if
storage exceeds 1 monthCommunication USB and Ethernetwith PC
Use PROFLASH to upgradeinstrument firmware
USB host port

USB 2.0, supplying 5 V,250 mA
Save folders to USB flash
drive

UFF export

Spectra, Coherence, FRF
magnitude and phase

Ruggedness IP65 sealed 4’ (1.2 m) drop onto
concrete Procedure: 26 drops
following MIL-STD-810F-516.5-IV

Universal File Format for
Modal and FRF data

Battery and Charger
Battery
type

Custom Lithium Ion pack, 7.4 V, 5Ah

Operatingtime

10 hours Backlight on — 60
second timeout

Charger
type

Internal charging, automatic
control External power pack 12 V
DC, 3 A output

Chargerate

3 A nominal 3 hours forcomplete charge

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vb8 Portable Data Collector, Analyzer and Balancer
Datasheet

116M5343 Rev. J

Compliance andCertifications

Hazardous Area Approvals

FCC

For the detailed listing of country andproduct specific approvals, refer tothe Approvals Quick Reference Guide(108M1756) available from Bently.com.

This device complies with part 15 of theFCC Rules. Operation is subject to thefollowing two conditions:llThis device may not cause harmfulinterference.
This device must accept any
interference received, includinginterference that may cause
undesired operation.

CSA/NRTL/C Class I, Division 2, Groups A, B, C,D(ApprovalOption 01)

EMCEN 61326-1: 2012
EN 61326-2-3: 2012
EMC Directive 2014/30/EU

Electrical Safety
EN 62133: 2002
LV Directive 2014/35/EURoHS
RoHS Directive 2011/65/EU

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vb8 Portable Data Collector, Analyzer and Balancer
Datasheet

116M5343 Rev. JPart
NumberOrdering Information
For the detailed listing of country andproduct specific approvals, refer tothe Approvals Quick Reference Guide(108M1756) available from Bently.com.

VB8-AA
A: Agency Approval01

CSA / NRTL / C (Class 1, Division 2)

Basic Kit
We offer the vb8 Portable Data Collector,
Analyzer and Balancer instrument in a basic kit
with the option to purchase System 1 or Ascent
software and license separately.
* Kit items below with multiple partnumbers listed have limited regional
availability due to certification
requirements.
PartNumber

Description

Qty

vb8 Portable Data Collector,
Analyzer and Balancer fourchannel portable datacollector

1

ACCL0547
or 200350*

Straight accelerometer3

ACCL0561
or 200350*

Right-angled accelerometeror straight accelerometer

1138M7748

Transducer cable, 4 ft.
straight4

CBTB0278

Triple BNC adapter

1

MAGF0104

Accelerometer magneticbase

4

CABB0560

BNC to BNC cable, 1m2

DescriptionQty

CABU0213

USB data transfer cable

1110M8172012

LEMO-BNC TTLTach/Keyphasor

1

PLUS0230

Category A power plug, USA /Canada

1

PLSA0241

Category D power plug,
South Africa / India

1

PLAU0228

Category M power plug,
Australia / New Zealand /China1

PLHK0245

Category G power plug,
Hong Kong / UK1

PLEU0229

Category C Power plug,
Europe1

CBVB0552

vbx instrument carry bag

1109M2384- Neck strap with Sensor
02Keeper

1108M4044

AC power adapter

1DCCA0041

DC car adapter

1108M3536

SCOUT100_Series andvbSeries Quick_Start_Guide

1MVBX0250 Instrument Reference guide1Metrology certification can be requested
when an order is placed, however thisservice is charged. Standard test data canbe requested for free, but is not evidenceof calibration.
To request a periodic metrology
calibration, contact Bently Nevada TechSuppport.

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vb8 Portable Data Collector, Analyzer and Balancer
Datasheet

116M5343 Rev. JAccessory Kits

C: 5000lbf pk, 1mV/lbf, 2.4lbm (285570-03)

Balancing Kit - 108M4050-0400

None01

Hammer Included

PartNumber

Description

Qty

113M5529-01 Reflective tape One roll, 60cm

1LASA0315

Laser Tach Kit Zone 2 rated

1

CBL50216

Laser cable 5 m

1MAGA0063

Laser magnetic stand1

CB5G0024

Sensor Cable 5 m, green

2

CB5R0025

Sensor Cable 5 m, red

2

CBBL0026

Carrying case for the kit

1

D: N/A
E: N/A
F: N/A

Additional Accessories
SoftwarePart Number

Zone 2 Laser Tach Kit - LASA0315
PartNumber

Description

Qty

108M4064

Laser Tacho Holder

1

108M4066

Circlips - 20Mm Stainless

1108M4067

Arp115 Oring

2108M4069

Laser Tach Zone 2 rated

1108M4051

ASCENT Level 1

108M4052

ASCENT Level 23071/01

System 1Hardware

Impact Hammer Kit

Part Number

Description

MAGM0064

Accelerometer magnetic baseMale connection

VBMR0222

Stainless safety rings (1 pair)

KTTC0331

Triaxial sensor kit
100 mV/g +/- 20%
Magnet6 ft coiled cable, withbreakaway connector
Zone 2 and Class 1, Div 2 rating

100M5828

The vbSeries hard case

DTC70262

The vbSeries dust cover

BATT0575

Replacement battery pack, LiIon 7.4 V 5 Ah

Impact_Hammer_Kit - AA-BB-CC-DDEE-FF
A: 500lbf pk, 10mV/lbf, 0.3lbm (285570-01)
00

None

01

Hammer Included

B: 1000lbf pk, 5mV/lbf, 0.3lbm (285570-02)
00

None

01

Hammer Included

Description

All accessories included in the basic
kit, balancing kit and Laser Tach kit
may also be ordered separately.

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vb8 Portable Data Collector, Analyzer and Balancer
Datasheet

116M5343 Rev. J

Copyright 2021 Baker Hughes Company. All rights reserved.

Bently Nevada, Ascent, Keyphasor, SCOUT, System 1 and Orbit Logo are registered trademarks of Bently Nevada, aBaker Hughes Business, in the United States and other countries. The Baker Hughes logo is a trademark of Baker
Hughes Company. All other product and company names are trademarks of their respective holders. Use of thetrademarks does not imply any affiliation with or endorsement by the respective holders.
Baker Hughes provides this information on an “as is” basis for general information purposes. Baker Hughes does notmake any representation as to the accuracy or completeness of the information and makes no warranties of any
kind, specific, implied or oral, to the fullest extent permissible by law, including those of merchantability and fitness
for a particular purpose or use. Baker Hughes hereby disclaims any and all liability for any direct, indirect,
consequential or special damages, claims for lost profits, or third party claims arising from the use of theinformation, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to makechanges in specifications and features shown herein, or discontinue the product described at any time without
notice or obligation. Contact your Baker Hughes representative for the most current information.
The information contained in this document is the property of Baker Hughes and its affiliates; and is subject tochange without prior notice. It is being supplied as a service to our customers and may not be altered or its content
repackaged without the express written consent of Baker Hughes. This product or associated products may becovered by one or more patents. See Bently.com/legal.

1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 1.775.782.3611 (US) or Bently.com/support
Bently.com

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