VIBROCORDFFT data collector and machine analyzer

VIBCODEcompatible

FeaturingLevel 1 Level 2

Strategy

"Just give me somethingthat works!"

When asked to name the greatestpitfall to machine condition moni-toring, one expert replied, "Insteadof making life easier, many moderninstruments seem to have 'lostsight of the forest for all the trees':complex technological 'advances'mean more specialist training,more time and effort for measure-ment - yet often enough deliverresults that are either difficult tointerpret or do not characterize theactual machine condition."What the maintenance specialistreally needs is simply an industrialtool that works. It must give clear,repeatable measurement results,quickly and reliably, without a lotof previous training or experience.VIBROCORD is made to fit the bill:its entire design is truly machine-oriented to provide maximum ben-efit to a wide range of users at thelowest possible cost. It gives the'power user' all the advanced func-tions he needs, but perhaps evenmore important, its operating ele-ments and procedures let nearlyany operator collect reliable mea-surements tailored to the particularmachine class and application -with no uncertainty or confusion.

The 'low-maintenance'monitoring strategy

Why 'characteristic overall values'?

In order to deliver reliable results,Level 1 trending values must bebased upon the special characteris-tics of the machine, for example,vibration severity for low-speedmachines which require monitor-ing all the way down to 2 Hz in-stead of the usual 10 Hz.

VIBROCORD trends specific over-all values that include all damagefrequencies characteristic of a par-ticular machine element, not justthe standard RMS vibration level -so that when Level 2 is signaled,you know that a significant condi-tion change has occurred.

Level 1 Level 2Trend mode Analysis mode

When the trend rises above tolerance, anFFT spectrum is measured for diagnosis.

The reference spectrum taken in 'good'condition allows meaningful comparison.

Level 1

Level 2

Detection vs. diagnosis:Level 1 / Level 2 strategy

Most rotating machines don't needfrequent vibration frequency analy-sis for condition monitoring sowhy bother wasting specialistsprecious time and effort on unnec-essary measurement and data han-dling? VIBROCORD lets anyoneconfirm machine health duringnormal operation (Level 1) basedupon specific machine-orientedcharacteristic overall values. Whenconditions worsen, the characteris-tic signal level rises: VIBROCORD

automatically switches to its RouteExpert mode and records the FFTspectrum (Level 2) to pinpoint thecause of signal elevation. This two-level strategy makes more efficientuse of manpower and data archi-val, yet ensures full information onmachine operating condition.

'Ref': reference level for 'good' operating condition'Last': most recent measurement level'Warn'/'Alarm': warning and alarm levels from threshold file, e.g. ISO standards'Spec': stored value for comparison with current measurement'Diff': difference between stored value and current measurement

: measured value exceeds warning threshold: measured value exceeds alarm threshold

Now for the first time ever, VIBRO-CORD offers a time-saving menuof predefined measurement situa-tions based upon expert knowl-edge of specific machine types.Beginners can use these setups as-is to obtain immediate results;standardized settings allow reliable

Knowledge-based setups:quick results, accurate comparison

VIBROCORD knowledge-based setups offer a wideselection of standard measure-ment situations. Each mea-surement mode - overall value,spectrum and time waveform -has its own separate setup list.

Overall values tell thewhole story at a glance

The 'overall value' screen (hereshown for ISO vibration severitystandards, machine class I) gives aclear overview of the situation. Asingle glance shows how the cur-

comparison with previous mea-surements for diagnosis. And eventhe expert can reduce setup timeby optimizing any desired detailsbefore beginning collection - or hecan define his own complete set ofmeasurement parameters instead.

rent reading stacks up againstwarning and alarm limits, the lastreading taken, and reference val-ues for 'good' operating condition.

The 'event' softkey lets youselect a standard MIMOSA-compliant machine event andenter a comment to store withthe measurement.

Optimum usability

Minimum overall time and effort

Quick, easy configuration for non-experts, thanks to predefinedknowledge-based measurementsetups

Machine-oriented OMNITREND

PC software for experts and non-experts alike

Expert guidance for reliable results

VIBROCORD Route Expert col-lects diagnostic measurements asneeded according to momentarymachine condition, eliminatesfollow-up alarm routes

MultiSpectrum optimizes resolu-tion in every frequency rangewith only one wideband spectrum

2-plane rotor balancing moduleavailable optionally

Built-in expertise for spectrumevaluation: frequency markershighlight critical areas, general ormachine-specific

True machine-based measurement

Full support of international stan-dards like ISO (alarm levels) andMIMOSA (events), even for spe-cial machine types

Characteristic overall values, char-acteristic spectra for specific ma-chine types

DualMode shows signal stabilityduring measurement by simulta-neous display of time signal andFFT spectrum

Adjustable acceleration envelopesaccording to machine type pro-vide high-reliability bearing diag-nosis

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High Medium LowResolution Resolution Resolution

In the low-frequencyrange, high resolution isneeded to clearly distin-guish spectrum peaks -for example, to distin-guish between mechan-ical problems (e.g. un-balance at 49.97 Hz fora machine at 3000RPM) and electrical ones(seen at 50 Hz mainsfrequency).

In the medium-frequencyrange, the spectrum isrecorded with mediummeasurement resolution,e.g. to analyze gearmesh.

In the high-frequencyrange, relatively lowresolution generallysuffices, e.g. in order tomonitor the bearingsignal range.

f/HzDf = up to 0.03 Hz Df = up to 0.31 Hz Df = up to 3.1 Hz

MultiSpectrum:proper resolution,fewer spectra

Proper resolution setting can makeor break machine diagnosis! Byusing an appropriate resolution foreach different region of the spec-trum, MultiSpectrum automaticallyensures clear distinction betweenadjacent spectrum peaks in anysituation. MultiSpectrum thereforeprovides optimum resolution withjust one wideband spectrum ateffective resolution of up to 8960lines! The experienced user mayadjust the overall range and num-ber of lines per division as desired.

Expert assistance

Good condition Bad condition

Route Expert adapts tocurrent machine condition

How does a vibration expert ap-proch machine condition monitor-ing? When things are runningsmoothly, he's satisfied to collectoverall value trend readings from aminimum of measurement loca-tions. But when an elevated read-ing spells trouble, he knows on thespot exactly where to collect whichtypes of additional readings and

FFT spectrum measurements foraccurate machine diagnosis. TheVIBROCORD Route Expert featureacts in exactly the same way toadapt its route to current machinecondition: it immediately calls forfurther specific measurements asneeded even at additional loca-tions eliminating the need for ex-tra follow-up 'alarm routes'.

Route Expert needs only a few char-acteristic overall values to confirmgood operating condition.

When the characteristic overall value rises, Route Expert automat-ically collects a characteristic spectrum for diagnosis and takesadditional measurements at further appropriate locations.

VIBCODE

Positive ID

LocationMachine numberMeasurement typesAlarm limits FFT spectra

Rugged ABS case (included)with contoured foam liningwithstands years of dailyindustrial use.

Evolutionarytransducers

VIBCODE

Eliminates trending errors

Mixed-up measurement locationsand missing readings can meanexpensive remeasurement or, evenworse, fatal trending errors butnow there's a better way: the rug-ged VIBCODE transducer freesyou from fixed routes by automati-cally reading the location of spe-cially-encoded measurement studs.VIBROCORD then knows the ex-act types and setups of measure-ments to collect, including FFTspectra if machine condition read-ings exceed specified alarm limits.A simple twist of the transducerassures accurate trending and reli-able broad-band spectrum mea-surements including shock pulsereadings.

Freedom of choice

The TIPTECTOR probe is idealfor hand-held measurement of FFTvibration spectra all the way upto 2 kHz and high-frequencyshock pulses for reliable evaluationof anti-friction bearing conditionand pump cavitation. Our magnet-ic probes (not shown) offer easytemporary mounting.Patented Tandem-Piezo industrialaccelerometers are available forpermanent installation in re-mote locations, and bondedmounting offers the perfect solu-tion for thin-walled housings.Ask about our full range of othersensor products as well, including: RPM probes, Temperature sensors, Remote switches, Cables, conduits, adapters, Mounting tools, etc.

Rugged nylon carrying pouchhas extra pockets for probesand accessories; rubber-coat-ed housing is waterproof andshockproof.

Dot-matrix display uses cleargraphics to depict detailedplots

Softkey labels appear in thedisplay to offer functions ap-propriate to the situation athand.

Long-life power supply for 24hours operation (typical use)

Flat rubber keyboard is im-pervious to moisture, pro-vides positive response toeach keystroke.

Connect any transducer typeto measure any desired typeof signal:- ICP transducer- mV signal- shaft vibration- microphone- voltage- temperature (type L thermocouple)- current clamp

Two-channel measurementinputs and separate triggerinput allow two-plane bal-ancing.

Parallel (Centronics) and seri-al (RS-232C) interfaces arebuilt in for easy printing anddata transfer to a PC.

Plug-in memory card providesall the take-along storage ca-pacity youll ever need - up to20 MB at a time!

The data collector

VIBROCORD offers all the mea-surement functions you'd expectof a full-featured FFT analyzer: Triggered time signals Spectrum range up to 40 kHz Startup/coastdown analysis Adjustable acceleration envelope Shaft orbit Tracking analysis 2-plane balancing (optional) RPM modeand much more! See the TechnicalData section for full details!

RPM-normalizedfrequency markersSelect from a list of rootcauses to mark spectrumlines with recognizedmachine defects.

Smarter routingmade simpleProgram a basic route sequencewith drag-and-drop convenience,then define a 'contingency plan'of diagnostic measurements andlocations for immediate action tobe taken on site by the VIBRO-CORD Route Expert whenevercharacteristic overall values ex-ceed warning limits.

Diagnosis MultiviewSpecify any desired combina-tion of measurement displaysfor monitored machines andcomponents with drag-and-drop convenience.Select among multigraph,waterfall or multisamplediagrams for signal trendingand diagnosis.DualTrend even lets you plotRMS and 0-P characteristicvalues in the same diagram!

QuickStart overviewOMNITREND shows you alarm conditionsand important changes in machine operatingtrends at a glance with a red line. The cleartree diagram of the machine park containsall aggregates, machines and subordinatemeasurement locations.

Advanced diagnosis toolsStandard cursors include x/ymain, delta, harmonic andzoom cursors.Root cause monitoring ofspectra can be performed viamask spectra and frequencybands.

Jump intothe VIBCODE PoolOMNITREND also defineslocations for inclusion in theVIBCODE Pool to ensurepositive identification regard-less of measurement se-quence.

Machine-oriented condition monitoring,vibration diagnosis and analysis

OMNITREND PC software

Made for Windows 95/NT!

Designed for ease of useOperation could not be simpler,with self-explanatory entries andprogram functions, analysis toolsand report output, all designed toreduce (or even eliminate) trainingeffort. The program runs in 'trendmode' or 'analysis mode' accord-ing to the type of user. Passwordedaccess levels can also be set forspecific user classes according totheir particular needs.

Alarms with intelligenceAdjustable three-stage alarms canbe programmed to allow proactivemaintenance well ahead of dam-age - or select from prepro-grammed ISO alarm limit files toallow immediate evaluation of con-dition-based characteristic overallvalues and spectra, even withoutspecialist knowledge.Time-controllable and time-weigh-ted trending functions allow failureprediction from the rise in charac-teristic overall values.

Ultimate connectivity:Open-door software policyInterface with all MMS systems viaMIMOSA data structure and inter-face to ODBC/SQL relational data-bases; default startup databasealso supplied with initial setup.OMNITREND can be used with allPRFTECHNIK data collectors andanalysis instruments, with shareddatabases.The integrated bearing and ma-chine database contains informa-tion on standard bearings andstandard machine defects and iscontinuously expanded via up-dates.

Standard event listIntegrated, expandableMIMOSA-compliant eventlist for routes, trends andreports

Machine-oriented featuresOMNITREND lets you cus-tomize settings, evaluation,diagnostic assistance bymachine class and applica-tion type.Include actual machine cha-racteristics such as machinetype and rpm through use ofpredefined knowledge-basedmeasurement setups - oroptimize the setups to reflectyour own experience withthe machine at hand.

Productive maintenance technology

PRFTECHNIKCondition Monitoring85737 Ismaning, Germanywww.pruftechnik.comPhone: (+49) 89 99 61 60Fax: (+49) 89 99 61 63 00eMail: info@pruftechnik.com

Printed in Germany VIB 9.596.06.04.GVIBROCORD, VIBCODE, VIBROTIP, TIPTECTOR andOMNITREND are registered trademarks of PRFTECHNIK Die-ter Busch AG. No copying or reproduction of this information,in any form whatsoever, may be undertaken without expresswritten permission of PRFTECHNIK AG. The informationcontained in this leaflet is subject to change without furthernotice due to the PRFTECHNIK policy of continuous productdevelopment. PRFTECHNIK products are the subject ofpatents granted or pending throughout the world. Copyright 1998 by PRFTECHNIK AG.

VIBROCORD firmware andOMNITREND PC softwareOperating modes

Route mode (data collector)- Condition-based route guidance with 'Route Expert'- Standard route for PC trending- VIBCODE measurement location recognition

Pool mode formachine park measurements

Multimeter mode for analysis anddiagnostic measurements- VIBCODE compatible- Measurement data can bestored and exported

Program structureKnowledge-based procedure with over50 machine-oriented measurementsetups.

CommentsStandard events and user definedcomments

DisplayLinear or logarithmic scaling in frequencyand time domains; graphic zoom func-tion; list of 10 highest spectral peaks;autoscaling available, MultiSpectrum

CursorPoint: main, delta and zoom cursorsLine: harmonic cursor

ZoomAdjustable as desired using zoom cursor

Measurement rangeAdjustable (limit) or 'autoranged'

Sensor adjustmentICP / current line drive / dyn. measur-ment variables (3V); scalable/adjustableto any desired units

Trigger- Channel A & B; freely-adjustablethreshold- 'Trigger' channel (TTL input);Rising/falling flanks, selectable

ResolutionNumber of lines: 100 to 3200(up to 8960 with MultiSpectrum)Line interval: 0.03 Hz

WindowsRectangular, Hanning, Kaiser, FlatTop;selectable

Averaging parametersLinear, exponential, peak hold;Number of samples: 1 to 999 (adjustable)Display: static, dynamic

Frequency domain9 ranges from 200 Hz to 40 kHz(switchable to cpm)

Time domain24 ranges from 2.5 ms to 32 s(depending upon number of lines)

Diagnosis- Vibration severity according to ISO- Machine fault diagnosis- Bearing/gear damage detection (shockpulse technique and envelope analysis)

- International standard selection list oftolerances for machine types

- Machine-specific selection list ofcharacteristic damage frequencies

- Display of characteric damage frequencies- Phase measurement for extendedmonitoring of the vibration condition

- Order filter for time signal, balancing,phase measurement

- Motor current analysis- Sound pressure spectrum

Process parametersManually-entered measurement variables

UnitsAccording to ISO or selectable:- mm/inch- C/F- Hz/cpm

VIBROCORD firmwareMeasurement variables and ranges

Shock pulse(anti-friction bearings) -9 to 80 dBsvUnits: dBsv, dBn , each with carpet andmaximum values

Cavitation -9 to 80 dBCAV

Temperature -30C to 500C-22F to +932F

Accuracy 3%

Vibration- displacement3 0 - 10 to 5000 [m]- velocity3 0 - 5 to 2000 [mm/s]- acceleration3 0 - 10 to 5000 [m/s2]Accuracy 5% (DIN 45662, Class I)

RPM 60 to 65535 RPMAccuracy 0.1%

Rotor balancing (optional)Graphic-oriented 1- or 2-plane balancingwith calculation routines for fixedlocation, fixed weight or tape measurelocation corrections. Requires referencetransducer.

OMNITREND PC softwareFeatures

- True 32-bit application

- Relational database system with ODBC/SQL interface; meets ISO / MIMOSAstandards

- Machine-oriented MIMOSA-compliantdata structures for data transfer withMMS ('Maintenance ManagementSystem') software

- Handles trend and multimeter measure-ments; sets up measurements, instru-ment display and PC depictions.

- Manages event lists, frequency markers,tolerance files and sensor settings

- Manages machine condition data,machine information and bearing data

Technical data

VIBROCORD hardwareMeasurement channels

2 analog channels, selectable:ICP signal (2 mA, 24 V max.)Current line drive (10 V, 10 mA max.)Protective low voltageAC: up to 3 VTemperature (-30C to 500C /-22F to 932F; Type L thermocouple(Ni-CrNi))

1 digital trigger channel (RPM)

Frequency range2 Hz to 40 kHz

Overall dynamic rangegreater than 126 dB

Measurement dynamic rangegreater than 72 dB

Sample frequencydependent upon measurement range(to 100 kHz and beyond)

Integrator2 integrator stages switchable

EnvelopeAM demodulator stage with adjustablefrequency bands

Keyboard6 variable-function softkeys, 16 fixed-function hardkeys, 4 dual-function keys(Arrow/digit)

MemoryPC card with 4 MB storage;4 MB suffice for 4000 two-channelspectra @ 400 lines or 640 one-channelspectra @ 3200 lines.

DisplayLCD flat display with contrast adjustment60 x 95 mm / 2 3/8" x 3 3/4", 200 x 320pixels; with external illumination

Power supply indicators4 LEDs: main supply depleted, auxiliarysupply depleted, AC connected, 'sleep'mode activated

Power saving functions'Sleep' mode: LCD display off, measure-ment suspended (adjustable shutoff time)

InterfacesParallel printer connection (Centronics)and serial data port (RS-232C, 57 kBaud)

Power supply- Rechargable NiCad batteryNominal voltage 7.2 VCapacity 2.8 AhCharging time 0.1 to 6 hours

(with regeneration)

- 'C'-cell batteries, 6 x 1.5V (IEC LR 14)

- AC supply 115V / 230V switchable;power output < 400 mA at 12V 5%

Auxiliary battery: 9V (IEC 6LR61), forapprox. 15 min. backup operation (de-pending upon sensors in use)

Operating time (rechargable)1

approx. 24 h (2-channel intermittent use)approx.8 h (2-channel continuous use)

Environmental protectionIP 65 (dustproof / spray waterproof)

Operating temperature0C to 45C / 32F to 113F(-10C to +50 C / 14F to 122F)

Transport and storage temperature-10C to + 60C / 14F to 140F

1 with PRFTECHNIK sensor and new rechargable battery under controlled conditions

Relative humidity10 % ... 90 %

Dimensionsapprox. 210 x 240 x 70 mm (W x H x D)approx. 8 1/4" x 9 1/2" x 2 3/4"

Weightapprox. 2.9 kg / 6.4 lb.(w/o batteries or strap)

Carrying caseBlack ABS plastic, approx. dimensions:

550 x 380 x 205 mm21 5/8" x 15" x 8 1/8"

when used with VIB 6.140 mobile industrial accelerometer

- Network compatible, with passwordedlogin and individual user rights

- Two general user levels ('trend' forgeneral use and 'analysis' for specialists)

- 'Diagnosis Multiview': specific combina-tions of graphs can be preprogrammedfor trending and for analysis at eachlocation.

ApplicationMachine condition monitoring anddiagnosis via

- Trend measurement of machine-oriented characteristic overall valuesand characteristic signals

- Diagnosis of machine vibration andanti-friction bearings

- Signal and data analysis

CompatibilityVIBROCORD, VIBSCANNER, VIBROTIP,SYSTEM 2 VIBROSPECT FFT, other FFTinstruments upon request

System requirements100 MHz Pentium processor; 32 MBRAM; 20 MB HD capacity; VGA graphics(800x600); operating system: Win95B/98/ME/NT4(SP5)/2000

Mobile industrialaccelerometer VIB 6.140Sensitivity

3% 1.0 A/ms-2 at 159 Hz, 25C= 9.8 A/g at 159 Hz, 77 F

Frequency range5% 2 Hz to 8 kHz3dB 0.3 Hz to 20 kHz

Resonant frequency36 kHz

Temperature range-30C to +100C / -22F to +212F

Transverse sensitivity< 5% at 10 kHz

Temperature sensitivity< 0.05 ms-2/K

Magnetic sensitivity< 5 ms-2/T (at 50 Hz)

Base strain sensitivity< 0.1 ms-2/m/m

Shock limit250 kms-2 = 25000 g

Environmental protectionIP65 (IP 67 with greased plug)

Connector typeTNC plug

Dimensions (w/o adapter)length 38 mm / 1 1/2"diameter 19 mm / 3/4"weight 33g / 1.2 oz.

Mounting variants available- M5, flat (transducer)- Magnet for curved surfaces (VIB 8.736)- Contact probe (hand-held, VIB 3.450)- Bonded adapter (VIB 3.430)- M5 / 120 threaded adapter (VIB 3.435)- M8 / 90 threaded adapter (VIB 3.440)- UNC 5/16 / 90 threaded adapter (VIB 3.441)

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