User guide

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SPECIFICATIONS vb8
®
DATA ANALYZER REMARKS
Sensors
Sensor input 4 channels Simultaneous sampling
Compatible Sensor Types Accelerometer, velocity,
displacement, current, voltage
output, 4 to 20 mA
AC coupled range 16 V peak-peak Allowsfor±8Vsensoroutput
swing(±80g)
DC coupled ranges 0 V to 20 V, -10 V to 10 V,
-20 V to 0 V
E.g. for reading prox-probe gap
Connectors 1xBNC(CH1)
1xLEMO(CH2/CH3/CH4)
Safetyfeature:Break-free
inline connector
Analog to digital conversion 24-bit ADC
Sensor excitation current 0 mA or 2.2 mA (configurable),
24 V maximum
2.2mArequiredforICP®-type
accelerometer
Sensor detection Warns if short circuit or not
connected
Tachometer
Sensor Laser sensor, reflective tape Sensor triggers on beam
reflection
Laser sensor range 10 cm to 2 m nominal Depends on size of reflective
tape
Other sensor types supported Contact, TTL pulse,
Keyphasor
®
Instrument has optically
isolated input
Power supply to sensor 5 V, 50 mA
TTL pulse rating 3.5V(4mA)min,28V(5mA)
max,off-state0.8V
Keyphasor® thresholds 7.7±0.5V,13.3±0.8V,
18.8±1V
Nominally8V,13V,18V
Speed range 10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
Maximum levels
>1000g(10000m/s2)
>1000in/sec(25000mm/s)
> 100 in (2500 mm),
> 10 000 Amps
Effective limit is sensor
sensitivity and output voltage
Dynamic signal range
>95dB
Typical at 400 line resolution
Harmonicdistortion Lessthan-70dBtypical Other distortions and noise
are lower
Units gorm/s2oradB
in/sormm/sorvdB
mil or mm or µm
amps, user-defined
0-peak, peak-peak or RMS.
Auto-scale by 1000x when
required.US&SIoptionsfor
bothadB&vdB.
Magnitude&cursors Overall RMS value, waveform
true pk-pk, dual cursors,
harmonics
Digital readouts on chart
Baseaccuracy ±1%(approx.0.1dB) ForDClevel:%offullscale.
ForACsignal:%ofreading
Highfrequencyattenuation
≤0.1dB100Hzto10kHz
≤3dB>10kHzto40kHz
Attenuation tolerances are in
addition to base accuracy
AC coupling attenuation
≤0.1dB10Hzto<100Hz
≤3dB1Hzto<10Hz
Attenuation due to Integration
≤ 0.1dB1Hzto<100Hz
≤1.5dB0.2Hzto<1Hz
≤0.1dB10Hzto<100Hz
≤1.5dB1Hzto<10Hz
Lowfreq.mode:Whencoupling
=DC,Fmax≤100Hz.Normal
mode: Applicable in all other
cases. Values apply to single
integration (accel. to veloc.).
Double the values for double
integration (accel. to displ.).
Spectrum Display
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 Instrument zeroes all spectral
linesbelowFmin
Resolution 400,800,1600,3200,6400,
12800lines
6400 lines max. for 2-channel
measurements.3200 lines max.
for 4-channel measurements.
Frequencyscale Hz,CPM,Orders Linear scale with zooming
Amplitude scale Acceleration, velocity,
displacement, current, or
user-defined
Linear or log scales, auto or
manual scaling
Window shapes Hanning,rectangular
Overlap (0, 12.5, 25, 37.5, 50, 62.5, 75,
87.5)%
DependentonFmaxand
number of lines
Numberofaverages 1,2,4,8,16,32,64,128 Increases sampling time
proportionally
Averaging types Linear, exponential,
peak hold, synchronous
SPECIFICATIONS vb8
®
DATA ANALYZER REMARKS
Spectrum Display Continued
Demodulation bandwidths 23 bandwidth options From125Hzto1250Hzupto
16kHzto20kHz
6Pack Upto40kHz&3200lines1
channel.Upto20kHz&1600
lines 3 channel.
Spectrum and waveform for
lowfreq,highfreq,demod.
Order tracking Upto6kHzFmax,orders-
based
Tachometerrequired,mounted
on high-speed shaft
Order tracking - Distortion Lessthan-65dB Within50%to200%speed
variation during recording
Waveform Display
Numberofsamples 1024,2048,4096,8192,
16384,32768
Time scale 10 ms to 512 seconds Or orders based from 1 to
999 revs
Time synchronous averages 1,2,4,8,16,32,64,128 Only available when tach.
triggered
LongtimewaveformFmax 25Hzto40kHzFmax 20kHz2-or4-channel
Long time waveform duration 14.7 million samples (total over
channels)
E.g.forFmax1kHz,Fsample=
2.56kHzandDuration=1.6hrs
Logging & Analysis
Output formats Instrument screen, transfer to
Ascent
®
,XML,UFF
Data storage Dual1GBnon-volatileflash
memories
Database mirror copy on
second flash memory
Data storage structure Folders/machines/points/
locations/routes
Nolimitsapplied,50character
names
Max folder size 10 000 measurement locations
Modal analysis CH1forhammer,upto3
response channels, ≤10kHz
Coherence&FRF
(Accelerance/Mobility/
Compliance)
Cross channel spectrum 1 reference, up to 3 other
sensors
Coherence&FRFforimporting
into ODS software
Balancing
Planes Up to 2 planes, 4 sensors
Speed range 30 to 60 000 RPM
Measurement type Acceleration, velocity,
displacement
Weight modes Angle 0° to 360°, fixed position,
circumference arc
E.g. weights on fan blades,
linear distance around
circumference
Remove trial weights Yes/No Automatic recalculation
Manual data entry Yes Allows re-entry of previous
balance jobs
Storage Against machines in data
structure
Nolimitsapplied
Display & Communication
Display GraphicGrayscaleLCD WhiteLEDBacklight
Resolution&size 480x320(HVGA),5.5”(140
mm)
Readable in direct sunlight
Supported languages ENG,FRE,SPA,POR,RUS,CHI FirmwarereleasesinEnglish,
translations follow
Communication with PC USBandEthernet UsePROFLASHtoupgrade
USBhostport USB2.0,supplying5V,250mA SavefolderstoUSBflashdrive
UFFexport Spectra,Coherence,FRFmag.
&phase
UniversalFileFormatfor
Modal&FRFdata
Battery & Charger
Batterytype Custom Lithium Ion pack,
7.4 V, 4500 mAh
Operating time 10 hours Backlighton(60second
time-out)
Charger type Internal charging,
automatic control
External Power pack 12 V DC,
3 A output
Charge rate 3 A nominal 3 hours for complete charge
Mechanical
Size 9.9”Wx5.8”Lx2.4”H
(252x148x60)mm
Weight 2.7 lb (1.2 kg) Including battery and strap
Environmental
Operating temperature 14°Fto122°F(-10to50)°C
Storagetemperature&
humidity
-4°Fto140°F(-20to60)°C,
95%RH
If storage exceeds 1 month: Up
to95F(35C),85%RH
EMC EN61326
Ruggedness 4’ (1.2m) drop on concrete, IP65 Procedure: 26 drops following
MIL-STD-810F-516.5-IV
Hazardouslocations CSAClassI,Division2(Groups
A,B,C,D)
Certification