Bently Nevada vb8 Portable Data sheet

vb8 Portable Data Collector, Analyzer and
Balancer

Datasheet

Bently Nevada Machinery Condition Monitoring

Description

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-route
and off-route data collection, machine-sideanalysis and
diagnosis as well as on-site dynamic balance correction.

The vb8 Portable Data Collector, Analyzer and Balancer is
certified for Class 1 Division 2 hazardous areas. It is
ergonomically designed and lightweight for all day comfort.

The vb8 provides recordings with up to 12,800 lines of
resolution 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 assets
that work with System 1 software.

116M5343 Rev. G

The vb8 Portable Data Collector, Analyzer and Balancer
offers the following features:

l Four channel simultaneous recordings
l Two-plane balancing with up to 4 sensors
l Support for acceleration, velocity, displacement, DC-

coupled, current and voltage output sensors

l Triax-enabled
l 12,800 lines FFTresolution
l Supports 80 kHz Fmax
l 1 GB memory
l Spectrum and waveform recordings

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

l Demodulation for early detection of

rotating machinery problems such as
bearing faults

l Unique 6Pack recording system
l Full analysis capabilities such as time

synchronous averaging, coastdown and
runup, bump test, cross-channel phase,
orbit plot, and long time waveform

l Modal Impact Testing and Cross Channel

Spectrum (ODS)

l Ability to export data in Universal File

Format (UFF) for additional analysis in
ODS software such as Vibrant
Technology ME'scope

l Numeric parameter input via keypad with

trend and alarm capability

l Sensor cable self-test feature
l Flex feature to add Remote Comms
l USB host port for data transfer to external

USB drive

l Upgradable Proflash system and free

firmware updates for 5 years

l Five-year warranty on the instrument

hardware

2/9

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

Specifications

Sensors

Sensor input

Compatible
sensor types

AC coupled
range

DC coupled
ranges

Connectors

Analog to
digital
conversion

Sensor
excitation
current

Sensor
detection

Tachometer Sensor

Sensor type

Laser sensor
range

Tachometer Input

Supported
sensor types

Power supply
to sensor

TTL pulse
rating

Keyphasor*
thresholds

Speed range

Four channels simultaneous
sampling

Accelerometer, velocity,
displacement, current, voltage
output and 4 to 20 mA

16 V peak-peak Allows for ± 8 V
sensor output swing (± 80 g)

0 V to 20 V, -10 V to 10 V, -20 V to 0 V

E.g. For reading prox-probe gap
1 x BNC (CH1) 1 x LEMO

(CH2/CH3/CH4)

Safety feature:Break-free inline
connector

24-bit ADC

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

2.2 mA required power for IEPE/ICP
type accelerometer

Warns if short circuit or not
connected

Laser sensor with reflective tape
Sensor triggers on beam reflection

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

Laser Tach, Contact, TTL Pulse,
Keyphasor

Instrument has optically isolated
input

5 V, 50 mA

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

7.7 ± 0.5 V, 13.2 ± 0.8 V, 18.5 ± 1 V

Nominally 8 V, 13 V, 18 V
10 RPM to 300,000 RPM (0.2 Hz to 5

kHz)

Pulse width at least 0.1 ms

Accuracy ± 0.1 %

Output to
drive strobe

Up to 140 Hz (8400 CPM)

Typical Depends on strobe type
Special cable required

Parameter Indication

> 1000 g (10,000 m/s2) > 1000 in/sec

Maximum
levels (peak)

Dynamic
signal range

Harmonic
distortion

Units

Magnitude &
cursors

Base
accuracy

High
frequency
attenuation

AC coupling
attenuation

Attenuation
due to
Integration
(normal
mode)

Attenuation
due to
Integration
(low
frequency

(25,000 mm/s) > 20 in (500 mm) >
10,000 amps

Effective limit is sensor sensitivity and
output voltage

> 95 dB

typical at 400 line resolution
Less than -70 dB typical

Other distortions and noise are lower
g or m/s2 or adB in/s or mm/s or vdB

mil or mm or µm adB, vdB, amps, user
defined

0-peak, peak-peak or RMS Auto­scale by 1000x when required

US and SI options for adB and vdB
Overall RMS value Waveform True

pk-pk Dual cursors Harmonics

Digital readouts on chart
± 1% of readings approximately 0.1 dB

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

≤ 0.1 dB 100 Hz to 10 kHz ≤ 3 dB >10 kHz
to 40 kHz

Attenuation tolerances are in
addition to base accuracy.

≤ 0.1 dB 10 Hz to <100 Hz ≤ 3 dB 1 Hz to
<10 Hz

≤ 0.1 dB 10 Hz to <100 Hz ≤ 1.5 dB 1 Hz to
<10 Hz

Values apply to single integration.
(Acceleration to velocity)

Double the values for double
integration (Acceleration to
displacement)

≤ 0.1 dB 1 Hz to <100 Hz
≤ 1.5 dB 0.2 Hz to <1 Hz

Applies when coupling = DC and
Fmax ≤ 100 Hz

3/9

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

mode)

Spectrum Display

25, 50, 100, 125, 150, 200, 300, 400,
500, 600, 800, 1000, 1200, 1600, 2000,
2500, 3000, 4000, 5000, 6000, 8000,

Fmax ranges

Fmin possible
range

Resolution

Frequency
scale

Amplitude
scale

Window
shapes

Overlap

Number of
averages

Averaging
types

Demodulation
bandwidths

6Pack

Order tracking

Order tracking

- Distortion

10,000, 15,000, 20,000, 30,000,
40,000, 60,000, 80,000 Hz Or
equivalent CPM values Or orders­based from 1X to 999X

0 to Fmax

Instrument zeroes all spectral lines
below Fmin.

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

Hz, CPM, Orders Linear scale with
zooming

Acceleration, velocity, displacement,
current, voltage, user defined Linear
or log scales, auto or manual scaling

Hanning Rectangular

(0, 12.5, 25, 37.5, 50, 62.5, 75, 87.5) %

Depends on Fmax and numberof
lines

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

Increases sampling time
proportionally

Linear,exponential, peak hold,
synchronous

23 bandwidth options From 125 Hz to
1250 Hz Up to 16 kHz to 20 kHz

Up to 40 kHz and 3200 lines (1
channel) Up to 20 kHz and 1600 lines
(3 channels)Spectrum and
waveform for low-frequency, high­frequency and demodulation

Up to 6 kHz Fmax Orders-based

Tachometerrequired Mounted on
high-speed shaft

< -65 dB

Within 50% to 200% speed variation
during recording

Waveform Display

Number of
samples

Timescale

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

10 ms to 512 seconds or orders based

from 1 to 999 revs

Time
synchronous
averages

Long time
waveform
Fmax

Long time
waveform
duration

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

Only available when tachometer
triggered

25 Hz to 40 kHz

20 kHz max for two or more channels

14.7 million samples (total over
channels)

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

Logging and Analysis

Output
formats

Data
storage

Data
storage
structure

Max
folder
size

Modal
analysis

Cross
channel
spectru
m

Instrument screen, transferto Ascent or
System1, XML, UFF file export via USB

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

Folders/machines/points/locations/route
s

No limits are applied 50 character names

10,000 measurement locations

CH1 for hammer Up to 3 response
channels ≤ 40 kHz

Coherence and FRF (Accelerance /
Mobility / Compliance)

1 reference Up to 3 other sensors

Coherence and FRF for importing into ODS
software

Balancing

Planes Up to 2 planes 2 sensors
Speed range 30 to 60 000 RPM
Measurement

type

Weight
modes

Remove trial
weights

Manual data
entry

Acceleration Velocity Displacement

Angle 0° to 360° Fixed position
Circumference arc

E.g. Weights on fan blades, linear
dist. around circumference

Leave or remove trial weights for final
balance

Automatic recalculation
Yes

Allows re-entry of previous balance

4/9

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

jobs

Storageof
balancing
jobs

In the data structure where machine
vibration readings are stored

No limits applied

Display and Communication

Display

Resolution & size

Supported
Languages

Communication
with PC

USB host port

UFF export

Graphic Grayscale LCD LED
Backlight

480 x 320 (HVGA), 5.5” (140 mm)

Readable in direct sunlight
English, Chinese, French, German,

Japanese, Portuguese, Russian
and Spanish

USB and Ethernet

Use PROFLASH to upgrade
instrument firmware

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

Spectra,Coherence,FRF
magnitude and phase

Universal File Format for Modal
and FRF data

Environmental Limits

Operating
temperature

Storage
temperature
& humidity

Ruggedness

14 °F to 122 °F (-10 to 50 °C)

-4 °F to 140 °F (-20 to 60 °C), 95% RH

Up to 95 F (35 C), 85% RH if storage
exceeds 1 month

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

Battery and Charger

Battery type Custom Lithium Ion pack, 7.4 V, 5 Ah
Operating

time

Charger type

Charge rate

10 hours Backlight on — 60 second
timeout

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

3 A nominal 3 hours for complete
charge

Mechanical

Size

Weight

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

2.7 lb (1.2 kg) Including battery and
strap

5/9

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

Hazardous Area Approvals

For the detailed listing of country and product
specific approvals, refer to the Approvals Quick
Reference Guide (108M1756) available from

Bently.com.

CSA/NRTL/C
(Approval
Option 01)

Class I, Division 2, Groups A, B, C, D

6/9

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

Part Number Description Qty

Ordering Information

For the detailed listing of country and product
specific approvals, refer to the Approvals Quick
Reference Guide (108M1756) available from

Bently.com.

108M4044 AC power adapter 1
DCCA0041 DC car adapter 1

108M3536

MVBX0250 Instrument Reference guide 1

SCOUT100 Series and vbSeries
Quick Start Guide

1

VB8-AA

A: Agency Approval
01 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 part
numbers listed have limited regional
availability due to certification
requirements.

Part Number Description Qty

vb8 Portable Data Collector,
Analyzer and Balancer four­channel portable data collector

ACCL0547 or
200350 *

ACCL0561 or
200350 *

138M7748 Transducer cable, 4 ft. straight 4
CBTB0278 Triple BNC adapter 1
MAGF0104 Accelerometermagnetic base 4
CABB0560 BNC to BNC cable, 1m 2
CABU0213 USB data transfercable 1
110M8172-012 LEMO-BNC TTL Tach/Keyphasor 1

PLUS0230

PLSA0241

PLAU0228

PLHK0245

PLEU0229 Category C Power plug, Europe 1
CBVB0552 vbx instrument carry bag 1
109M2384-02 Neck strap with Sensor Keeper 1

Straight accelerometer 3

Right-angled accelerometeror
straight accelerometer

Category A power plug, USA /
Canada

Category D power plug, South
Africa / India

Category M power plug,
Australia / New Zealand / China

Category G power plug, Hong
Kong / UK

Accessory Kits

Balancing Kit - 108M4050-04

Part Number Description Qty

113M5529-01 Reflective tape One roll, 60 cm 1
LASA0315 Laser Tach Kit Zone 2 rated 1
CBL50216 Laser cable Five meters 1
MAGA0063 Laser magnetic stand 1

CB5G0024

CB5R0025 Sensor Cable Five meters, red 2
CBBL0026 Carrying case for the kit 1

Zone 2 Laser Tach Kit - LASA0315

1

1

1

1

1

1

Part Number Description Qty

108M4064 Laser Tacho Holder 1
108M4066 Circlips - 20Mm Stainless 1
108M4067 Arp115 Oring 2
108M4069 Laser Tach Zone 2 rated 1

Sensor Cable Five meters,
green

2

7/9

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

Impact Hammer Kit

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
C: 5000lbf pk, 1mV/lbf, 2.4lbm (285570-03)
00 None
01 Hammer Included
D: N/A
E: N/A
F: N/A

Additional Accessories

Software

Part Number Description

108M4051 ASCENT Level 1
108M4052 ASCENT Level 2
3071/01 System 1

Hardware

Part Number Description

MAGM0064

VBMR0222 Stainless safety rings (1 pair)

KTTC0331

100M5828 The vbSeries hard case
DTC70262 The vbSeries dust cover

BATT0575

Accelerometer magnetic base
Male connection

Triaxial sensor kit
100 mV/g +/- 20%
Magnet
6 ft coiled cable, with breakaway
connector
Zone 2 and Class 1, Div 2 rating

Replacement battery pack, Li-Ion

7.4 V 5 Ah

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

8/9

vb8 Portable Data Collector, Analyzer and Balancer
Datasheet 116M5343 Rev. G

Copyright 2020 Baker Hughes Company. All rights reserved.

Bently Nevada, vb Series, Keyphasor, System 1 and Orbit Logo are registered trademarks of Bently Nevada, a Baker
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 the trademarks
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
not make 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 the
information, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to make
changes 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 to
change 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 be
covered by one or more patents. See Bently.com/legal.

1631 Bently Parkway South, Minden, Nevada USA 89423

Phone: [phone] or 1.800.227.5514 (US only)

Bently.com

9/9