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1. Chosen standard is displayed above the machine symbol F13 in this case If Adash standard is chosen nothing Is displayed MEASURE This item contains the settings of measurements DISP VAL ESC MEASURE UNITS To change the UNITS go to SETUP menu and then MEASURE menu IMPEHIAL ESC Vibration speed unit can be chosen here mm s millimetres per second for Metric units and ips inch per second for Imperial units are available Device remembers chosen units even after switch off 39 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M MEASURE DISPLACEMENT VALUE RMS P P 0 P P P ESC Displacement value setup Three options are available See above picture Confirm by D button and your value settings will be saved TIME SETTING This choice allows you to setup time in your instrument By pressing V A and D buttons is it possible to move between screens to setup date month year and time ESC Returns to the measurement screen 40 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Error Messages Sensor connection Error Error with temp Sensor Error without temp sensor When incorrect connection of a sensor unsuitable sensor type broken cable etc is detected then the temperature screen occurs and the error message is written upon the values Display
2. Foundation class Rigid R24 Flexible F24 Limit value settings in the A4900 Vibrio M unit mm s RMS velocity values in s 0 06 0 11 0 18 0 09 0 18 0 28 A B B C C D A B B C C D border zone It is possible to set up these values directly in the unit Then the measured values are displayed in traffic light colours You can choose Adash limits recommended or ISO 10 816 limits Setting up is in the menu under the SETUP mode see instrument operation Coloured marks according to ISO 10 816 are ranges A and B displayed in green Range C is yellow and range D is red It is necessary to choose the type of evaluation from R13 F13 R24 or F24 see the table above 19 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Quick Start The aim of this chapter is to introduce you to this instrument and without reading a complete User s Guide enable you to measure your first vibration values This chapter does not describe the full and detailed operation of this instrument or measurement methodology Special chapters in this Guide are intended for this purpose Preparation of Measurement Points We have to select a measurement point before taking the measurement itself We want to choose it in such a way that transmission of vibrations would not be attenuated Usually this means as close to the source of vibrations as possible for instance at a beari
3. Push SAVE button The address screen with point address appears The last point number with which you worked is displayed If this point contains data then USED is displayed 14 24 ILE Set Font MN Set ia BN Val Apr wal Acc T 10 set UE Z 10 set 1 10 gt Point with saved data Point without saved data Use V A buttons and select required point address number If you push button longer then the movement is faster Then press middle D set button The new properties are displayed regarding the selected data to save 43 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M REP ACK ESC ESC Escape to the measuring screen ACK Confirm Save data REP Go to address screen Press ACK button to confirm data storing to selected point The instrument returns back to measurement screen after data storing Measurement screen No 1 properties Stored data Velocity RMS 10 1000 Hz mm s ips Velocity Peak 10 1000 Hz mm s ips Acceleration RMS 500 16 000 Hz g Acceleration Peak 500 16 000 Hz g Speed Hz only if evaluated Measurement screen No 2 properties Stored data Velocity RMS 10 1000 Hz mm s ips Velocity Peak 10 1000 Hz mm s ips Acceleration RMS 500 16 000 Hz g Acceleration Peak 500 16 000 Hz g 44 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M M
4. The instrument cannot be used in zone 0 Changing of batteries cannot be done in explosive risk area The communication cable cannot be done in explosive risk area The operator must be grounded and the unit must be grounded thru the operator DT eS 61 Further technical and contact information can be found at www adash com ADASH Ltd Certificated accessories Accelerometer AC90x Model Description AC90X Series Accelerometer Baterie AC905 1A 2 Pin Connector ALIGNMENT GUIDE PIN N 0 87 in 22 mm 2 07 in 52 mm 1 40 in 36 mm a 7 8 in HEX 22 mm HEX ou 3 di anm 1 4 28 90 83 in MOUNTING 21 mm HOLE ENERGIZER L91 Ultimate Lithium LIElYIZ as EO ULTIMaTe LITHIUM Classification Chemical System Designation Nominal Voltage Compatible With Storage Temp Operating Temp Typical Weight Typical Volume Max Discharge single battery only Max Rev Current Lithium Content Typical IR Specifications Cylindrical Lithium Adash 4900 Vibrio M Specifications Part Humber Sensitivity 1054 Frequency Response z3dB Frequency Response 10 Dynamic Range Electrical Settling Time 3 Seconds Voltage Source IEPE 18 28 VDC Constant Current Excitation 2 10 mA Spectral Moise amp 10 Hz 6 5 ug JHz Spectral Moise amp 100 Hz 2 pig fz Spectral Noise 1000 Hz 1 8 pg JHz Output Impedan
5. Acceleration spectrum 1 16 000 Hz g 800 lines Acceleration Demod Envelope RMS 500 16 000 Hz g Acceleration Demod Envelope Peak 500 16 000 Hz g Acceleration Demod Envelope time 500 16 000 Hz g 2048 samples Acceleration Demod Envelope spectrum 500 16 000 Hz g 800 lines 400 Hz Displacement RMS 2 100 Hz um mil Displacement 0 Peak 2 100 Hz um mil Displacement Peak Peak 2 100 Hz um mil Temperature non contact measurement 0 380 C 32 716 F LED stroboscope 0 17 300 Hz 10 18 000 RPM LED torch non contact temperature measurement vibration stethoscope 4 MB for data 900 measurements of 800 lines spectra or 2048 samples time signals may be stored Off Route Route with DDS 2014 Vibrio software for Windows included USB 2 0 compatible DDS 2014 Vibrio software for Windows included colour graphic OLED display 128 x 128 pixels diagonal 1 5 38mm 1x AC signal 8 Q 0 5 W for external headphones signal listening 2xAA 1 5V batteries alkaline NiMH Lithium 8 hours operation Operating 5 C to 55 C IP 65 150 x 60 x 35 mm 330 g including batteries without cable sensor and magnet 540 g including batteries cable sensor and magnet vibration sensor coiled cable to connect vibration sensor magnetic base for vibration sensor headphones with 3 5 mm jack USB cable measuring tip for manual pressure on the sensor transport case CD with the manual 57 Further technical
6. 63 Adash 4900 Vibrio M Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Adash 4900 Vibrio MP proximity option The Vibrio MP contains more measurement options then standard Vibrio M Originally these options are designed for measurement with contactless proximity sensors Such sensors are usually used on protection systems Bently Nevada Emerson Epro The buffered outputs on these systems are used for Vibrio MP connection Switch On of Instrument After the switch on the first screen appears It is different then standard Vibrio M You need to select the mode The Acc means the standard mode the same as VibrioM for measurement with acceleromer The Prox mode is the optional mode for proximity sensors The default sensor sensitivity is set to 7 87mV um you can change it in setup On the next screen you select the units which will be used The um metric and mils imperial IMPERIAL 64 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Screens Speed enter To define the speed is required in Vibrio MP The autodetect appears on the first screen It works in range 3 200Hz and you can switch off it in setup When you push the central button USER then do enter the speed manually by using of arrows Detected FO Hz DC offset The measurement of DC part in signal gap It
7. Adash 4900 Vibrio M If the error is detected e g SENSOR ERROR then some item are not available Move between items by pressing V A buttons Select item by pressing D button Use ESC for return from Menu MEMOH Y MEMOH Y VOLUME S TUP ESC ESC Fig Instrument MENU Fig Instrument MENU in error state LIGHT TORCH In LIGHT mode it s possible to use instrument like a torch Select the LIGHT mode and press D button White LEDs on the front side begins to light Symbol of a torch appears on display Press any button to switch off the light and the instrument starts to measure again Fig Torch mode LIGHT STROBO In STROBO mode you can use the instrument as a stroboscope White LEDs on the front side begins to flash with a frequency which is set up on the screen If the speed detection is known then frequency of flashes is set to that value By pressing W A buttons you can also change that frequency manually The step 1 10 100 RPM is displayed on the bottom line of the screen Press the D button and the STROBO menu appears You can switch off STOP the stroboscope or change the step frequency tuning Escape STROBO mode Pre set frequency in RPM and Hz 1500 nex 1RPM 75 OOL _ Pre set step V A ee increasing 1 BPR 1 decreasing Fig STROBO mode TOHPM Options of Lige Y ME mequency step Fig STROBO mode menu 35 Further technical and contact i
8. EET 61 Certticated deoSssoflg5v ceti soria ooi trad rate tbc tetas Da E FE dta det ad v Yd set ow sto o 62 Accelerometer AG GOK wisdom idabon ERR ha a palu tu beti a tepmi ca A Ld REVO STU 62 RCTS c duet iue EA EE E duced BEA dE Su Eo un eM E ren REN NT LIRE AUD e Aeon EN 62 HOOODBONeSS etc LI mE e UE EE 62 TAE CIC SUCKER manunta UU TM 63 Adash 4900 Vibrio MP proximity Option 1 esseeeeee eren eene nnn 64 SWIICH OP or INS TUME N e sean is scence a a enr DN Eee oon 64 SCOIEBIIS LENEE EEN EEEE S SENE M M LM IDCM ML A DUM a D a ML E See ern 65 SPESEN ET usi tx ntur REL Re Eo sar Odea ech str tee saa oe eaten ERE NE Sce E ei cat tei 65 BIST T TR 65 Displacement ir 1 T1000 THZ TANG eS iore maps a ro ku mei pu isa eoa x Eo Y a Fete saxa aah 65 Spectrum TQOOMZ OF 2500 7A 66 Spectrum 2 OO TAIZ sierra tinaes hearer 66 THME wavelormi M 1 TODOHBMZ uuuisiein pesi pedet place acta dic cate qc d e adc te i e ea wir a taa 66 SCUD RI T UU 67 EUM M MM MM TS 67 NFS tud cee eet oe LEM UM stet uS 67 EVADERE ELE LE Eds MD dU 67 NO RC T palma poeta 68 4 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Why perform vibration diagnostics Vibration diagnostics allows you to check the condition of all your machinery You will be informed early about potential failure before the machine get
9. T e e e e e T o 20 0 08 s p 1 0 0 04 0 0 0 0 500 1000 1500 2000 2500 3000 3500 4000 speed RPM gt 3 5 3 0 2 5 no A o 20 T T x 1 5 x o Q S lt 1 0 0 5 0 0 0 1000 2000 3000 4000 5000 6000 7000 8000 speed RPM gt 17 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M ISO 10816 limit values There is a wide range of valid standards but we would like to mention ISO 10816 It has several sections and it also deals with procedures of obtaining limit values for particular machines It contains 3 tables of values which are applicable for the A4900 Vibrio M unit Classification according to machine type nominal power or shaft height Select the group which best describes the general size type and speed of the machinery being measured Note that these machine group classifications are set according to ISO 10816 3 which rates overall velocity vibration levels for industrial machines with rated power above 15kW and nominal speeds between 120 RPM and 15000 RPM when measured on site ISO Groups 1 4 classifications define the following types of machinery Group 1 Large machines rated power above 300kW with a shaft height greater than 315 mm These machines are normally equipped with sleeve bearings Group 2 Medium size machines rated power from 15 kW to 300 kW and electrical machines with a shaft height between 160
10. Value Overload F When the value exceeds the range of display then OVR is displayed Input Overload Error If an input signal is too strong higher than 12V peak the instrument cannot process it the overload error is displayed The instrument is not capable of measuring this signal 41 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Measurement Error If there is a break in communication between measuring and display boards inside of the instrument this measurement initialization error is displayed MEAS INIT If you see this error it means that the instrument is malfunctioning and we recommend sending it to the manufacturer for repair 42 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Using the memory Advanced version only Off Route measurements With the A4900 Vibrio M instrument you can store all measured data measurements screen to the memory except FASIT screen Each measurement is stored to specific address Point ID from 1 to 250 Each point can contain several stored measurement screens measured data Press the middle D button to save data from measurement screen except FASIT screen On the screen appears Blue Menu with options MENU SAVE ESC 12 09 No data to save SAVE is disabled MENU Instrument menu SAVE Go to save data screen ESC Escape
11. and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Response specification Adash 4900 Vibrio M Calibration Each unit is calibrated in AC voltage using the pure sine signal generator All graphs and values below are measured in such way The accelerometer is not used for the calibration because the frequency response oscillates 3dB it is 30 40 in 1 10000Hz range This uneven property does not allow using it for calibration The voltage accuracy of instrument is high 2 5 or 5 comparing with the accelerometer Vibration velocity measurement frequency response A dB a as 10 100 1000 10000 log F Hz Measurement accuracy 10 mm s RMS input signal is 2 5 5 500 Hz frequency range and 5 500 2000 Hz range Vibration acceleration measurement frequency response A dB 30 0 1 1 10 100 log F kHz Measurement accuracy 1 g RMS input signal is 2 5 9o in 0 2 20 kHz frequency range 58 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Velocity measurement amplitude response Measurement accuracy for RMS vibration velocity 0 1 100 mm s range on 80 Hz r
12. differences in measured values A similar effects occurs for bearing condition measurements You can measure the RMS value the total energy in the signal or the PEAK value the highest peak in the signal We can use both types for evaluation but we have to realize their advantages and disadvantages RMS measurement advantages stable and repeatable time trends are easily readable disadvantages if wear is increasing the response of the RMS measurement is slower than the PEAK measurement but it is sufficient for maintenance PEAK measurement advantages fast response for any condition change disadvantages not stable and therefore not repeatable well extremely sensitive time trends are not readable well From these two basic measurements further measurements are derived Jenv envelope signal modulation The advantages and disadvantages are between those of the RMS and the PEAK measurements gse BCU SEE SPM measurements are usually performed on the sensor resonance frequency These methods have the same advantages and disadvantages as the PEAK measurement The relation between gears and ball bearings It is necessary to measure the acceleration signal for gearboxes diagnostics as for ball bearings When the balls are rolling over the damaged tracks pitting the shock pulses occur in the signal Unfortunately there are similar shocks in the signal from worn or damaged gears So if we measure a gearbox with r
13. frequency If the instrument finds significant energy level on one frequency that means in very narrow band then this frequency is labelled as the speed frequency From this description is clear that the speed has not to be found always If the higher level of energy is located in the spectrum on other line then speed frequency for example frequency of the fan blades then the wrong result can be displayed However the correct speed which must be defined for condition levels can be entered manually as well Evaluation of the machine and bearing conditions Diagnostician is always asking a basic question after measurement What condition of the machine should assign to this measured value Machine conditions are divided into 3 levels which have the same colours like traffic lights 1 GOOD GREEN COLOR Machine is in good condition no defect is found The operation is without restrictions 2 ALERT YELLOW COLOR The beginning defect has been found on the machine It is possible to operate with paying more attention and planning of repair 3 DANGER RED COLOR Serious defect has been found on the machine Machine shouldn t be in operation Special functions are included in the instrument for detection of that three states The overall vibration values are coloured with appropriate colour The vibration limits Adash for each state are determined from the graphs which are printed in the Adash Limit Values of Machine and Bearing Vib
14. is drawn together with the bearing The temperature color is used according the actual measured value SPEED The machine speed is displayed at the bottom part of the screen if it is available RPM means revolutions per minute The instrument performs automatic detection of machine revolutions using a spectrum analysis This function does not have to be always successful because the revolutions may not be possible to read for every spectrum If the speed is not determined it is not a malfunction It is hard to do it for example in machines with gears If the speed is available then TE and vibration values have been coloured corresponding to vibration limits Machine conditions are divided into 3 levels which have the same colours like traffic lights 1 GOOD GREEN COLOUR Machine is in good condition no defect is found The operation is without restrictions 51 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M 2 ALERT YELLOW COLOUR The beginning defect has been found on the machine It is possible to operate with paying more attention and planning of repair 3 DANGER RED COLOUR There is an serious defect found on the machine Machine shouldn t be in operation Overall PEAK values Similar rules for evaluation of the measured values as in the previous screen are valid for this screen with one difference The peak PEAK vibration values are displayed It is h
15. place the sensor perpendicularly upright to the axis of rotation and for the axial measurement along the axis The radial measurement can usually be performed horizontally vertically or in another angle The importance of the angle choice should not be overstressed choose any radial direction with easy access The measurement points need to be prepared for the measurements The best thing to do is to place measuring pads on a machine see the chapter Preparation of Measuring Location Preparation of the measurement point We take the measurement on the measurement point To obtain a quality measurement the measurement points must be prepared in advance For regular measurements the sensor must always be fixed in the same way at the same point It is necessary to fix the sensor with a magnetic base for bearing diagnostics Do not push the sensor by hand high frequencies cannot be measured in this way The magnetic base is firmly screwed to the sensor and then it is magnetically fixed to the metal surface of the machine Hence the sensor is fixed and a measurement is possible The quality of fixation considerably influences the result of your measurement If the sensor swings or jumps around etc your measurement is useless A layer of paint is also a big obstacle for higher frequencies The magnetic base has a ground surface and the same surface quality must be created on the machine In practice it is not possible A flat surface 3x3 cm in si
16. quee tax oenfeis td ed cM amen 58 CMO 110 9 NN ETERNI 58 Vibration velocity measurement frequency response cccecccececeeeeeeeeeeeeeeneeseeeeaeeeseues 58 Vibration acceleration measurement frequency response esee 58 Velocity measurement amplitude rESPONSE cc cece eee eecc seca eeseeeeeeeseteeceeeseeseeseeeeeeaeeees 59 Acceleration measurement amplitude reSPONSE cccecc eee eeeeeceeeceeceeeseeeeceeeceeeeeeaeeeees 59 Sensor SSMS MIVLY Sos 0255 59 Basic test with A4801 Sensor SimMulator ccccccccecesecseeceeeeeeeceeeeeeeseeeseeeeseeeeeeeeeeseeeeees 59 Basic test with sensor and Shaker aoi dece bene E ER C EFI a e res sa 59 Advanced tests of velocity measurement ccccceeccceeeceeeece cece cess eeceeeseeeeseeeseueeseeeeaneess 59 3 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Advanced tests of acceleration MEASUFEMENL ccceccceeececece cece cesseceuecaeeeseeeseeseeeseeenees 60 Envelope demodulation test ccc ceccecceeeeeeceecseeceeceeecsececseeceeeeeeseeseeeeeeseeeeneeeeeeseeeaes 60 Adash 4900 Vibrio Ex The ATEX Appendix option 61 Specification according to 94 9 EC ATEX directive eeeeseeesseeeeeeenenne 61 ZONES CAJONES ois T MI E eee 61 LSI e NAS TUNEN RE EE
17. reading end shift to next point When the route readings are finished then use again the DDS software for download of data into computer 50 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M How to evaluate the failure The instrument shows measurement results on several separate screens We shall describe basic rules for their use Overall RMS values AJTO 4800RPM Machine symbol this line shows RMS velocity vibration value in mm s or ips which is excited on the machine by mechanical phenomena related to imbalance of rotational parts of the machine fan wheel impeller clutch wheel etc incorrect axis alignment of the assembly misalignment mechanical looseness of individual machine parts large free play in seating of rotational machine parts shaft bearing shaft bearing housing clutch free play e g free play on a shaft pressed out grooves and tongues loose or worn out machine anchor bolts defective base insufficient frame or anchoring flange rigidity damage to machine rotation parts bent shaft Bearing symbol this line shows RMS acceleration vibration value in g which is excited by a condition of bearing This condition is related to time wear of the bearing bad lubrication with new bearings as well incorrect installation with new bearings as well abrading of bearing The thermometer symbol
18. tiaia pririak i a Mabel S patti Te on men Bags vermuten crt PET The METAL TECH SG repair stick is a 2 component epoxy cement with properties best suited for this task The two components after mechanical mixing chemically react and after drying they form a hard material resistant to pressure temperature and humidity 11 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M In the case of the simple pad the procedure is as follows cut off a disc approx 3 mm thick from the cement with a sharp knife Wet your fingers and work the disc into a homogenous lump Roll a cylinder with a diameter of approx 2 3 mm from this lump and put it on appropriate side of the pad Push the pad with glue to the prepared place and while constantly pushing and turning the pad back and forth with circular movements observe that the cement is being evenly pushed out along the circumference of the pad The purpose is to make the layer between the pad and the surface as thin as possible ATTENTION CEMENT MUST NOT BE PUSHED OUT COMPLETELY Pushed out cement may be removed or levelled out around the pad Place the plastic cover on the pad at the end of your work When using a T pad the amount of the cement depends on the size of the gap between the motor ribs and it is not so easy to determine the amount of cement to process The surface between the ribs must be cleaned well and degreased as
19. with the simple pad The space should be filled with the necessary amount of cement so that only the cylindrical part of the pad remains visible the cement dries Place the cover on the pad at the end of your work Listening to Vibrations Using Headphones A user can connect headphones to the Adash 4900 Vibrio M instrument since listening to the measured signal also enables the user to determine the type of problem People may think that this is an old method which does not have a place in this modern world The opposite is true Analysis of gears and low speed bearings e g in paper mills gains better quality by using the listening method The listening can be easily done by any maintenance person without a deeper knowledge of diagnostics If there is a defective bearing a distinct rumbling sound is audible in the headphones If the bearing is OK then you can hear just a weak noise HEADPHONES WARNING Listen at moderate volumes to avoid ear damage Always remove the headphones from the ears when you move the sensor or re connect the cable Relationship of Measuring Acceleration and Velocity Maintenance staff usually measure vibrations in mm s or inch s velocity only and not vibrations in g 9 81 m s acceleration This is a relic of the past when old equipment enabled the vibration velocity measurement only Bearing defects are not recognizable when using velocity measurements If the velocity value increases due to a bearing defe
20. 2 Vipraton Vleasureriellls erci aR A added 23 Temperature measurement cccccceecceeceecceeceeceeeceeceecceeteeceeesgesseeeeeceeceeeceesseeseeeeeeeeeees 23 Automatic detection of the machine SPEEA cccceccececeeececeseceseeceeeeeeceeeetseetseeteeeeeeenaes 24 Evaluation of the machine and bearing conditions eeeeeeeseseeeeeeeeeeeeeee 24 Fault Source Identification and Diagnostics TOO ccccccccecccsececeeeeeeeeeeeseeeeseeeeaeeeseeees 24 GS OO OSCO TM err m 25 Imre c 25 USING OMe AC DMOME Se RE 26 Instrument Operation socie ee aa soe cacen naincie esidewe vee ance wens Feb ER oq TE EE FS ER d MD tex dias ba ger P RI CS 27 owitebibgon abldserE secca nur vcf tus tauffodvd od co os uut d aet ncaa eios De Ret Ecl aus 2f standi Dy digo Me T c 28 IROMO MITT TT TUM 20 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M oel cHuon or MeasUFemelibsssosscedbutvice ipi da des nut a dus bite esten po cd dade deu P TuS eames buf tds 29 Measurement Methods SCreens cccccccceccseccecececceeeeceeeeceeeeeeeseceeeeneeeeeeeeeseeeeseneeeeeaeenees 29 Speed detection and delio sese cedet dece be bnc t t E DEOR FL thie t p UO d 33 MENU f rfu ncti ns SElECUOIN iie cd ids ert rUsb bebo d e iub eut aq Due Pep ERUba dE Fut PPP aida Uu di m E CINE 34
21. A4900 Vibrio M to your PC Then use DDS 2014 software to load route from PC into instrument The A4900 Vibrio M enables to save only one route See the DDS2014 manual for more details The instrument enables route readings Use the DDS software for loading of route to the instrument Use the USB cable for connection The connection will be opened only when the instrument is in the overall values screen USB OAT A TRANSFEH Select the MENU MEMORY ROUTE item The route screen appears VIEW VOLUME CLRDATA SETUP CLRH ALL ESC The first machine appears The machines are the first level of route By using the lt gt you can find required machine When you open one machine SEL then first point appears the point level After you select one point SEL then all required measurements will be taken On the machine level you can move between particular machines in the route On the point level you can move between particular points in selected machine 47 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Machine level Route name Plant Group 1 Machine path Machine 1 Machine name SE d Function keys Route screen Machine level lt gt Movement between particular machines SEL Selection of machine and entry to point level After pressing middle SEL button next screen appears Plant Group 1 Machine 1 ESC Esca
22. MEntYVErSION S n a a A A T Upgrade to advanced VERSION asiru aa aa i aE a a T Ofr Ioute dmneasuremeli adonna nieve ndrdsuutsanabeca vere bintwmuennedieaeiehneaiaictaseuehenttine 7 Route measurements sesso om Nau Eetiitieh Exon amas otto ste x bret es ca ug endet dtc os oO d T Vibration Diagnostics Basic Information cccccecceeeeeeeeeeeeeneeeneseneeeneeaneeaneeenseanseanseenes 8 HATO U CHOW SNR EE 8 sized ci NEIN POET Pr 8 Machine and bearing condition CIAQGNOSTICS cccecceccceeceeeeeceeceeeseeceeesseceeeeeeseeseeeneeneeees 9 Methods for ball bearing condition GIAQNOSTICS c cece cece sees eee eeeeeeeteeeteeeeeeeeeeeseeseeeeneees 9 The relation between gears and ball DEALINGS cc cece eccsecceeeseeceeeecseeceeeeseteeeeeeeeeseeaaes 9 Fault Source Identification and Diagnostics TOOl cccceccceccceeeceeeeeeeeteeteeeeeeeeseeeaees 10 Measurement fols xcvi et niae estan E a E A 10 The preparation of the measurement point eeseeeseessseseseseeneeneeneeeennenn 11 Listening to Vibrations Using Headphones ccccccceccceecceeeceeeseeeeeeeeeeeaeeeeeeseeeseeeseeeseees 12 Relationship of Measuring in Acceleration and Speed cceccseceseeceeeeeeeeeeeeeeetseeeeeenaes 12 Abbreviations used In tne gUlClB sucer is satum esas e See sae edad Saca aue a usus SI Men UMass Ue 12 What Will You Get with Your Instrument eeeeeeee rennen nen
23. NICNMIO I6 35 Bei OB D E s 35 MEMOR F Arana a A A A 36 ROUTE ahi are ch teach A id ot E ec N iuto cM eee LL Pd Dr 36 dz Tree 36 CERDATA PTT RT P T nade plese an sangeet 36 MEMOR T CERA C n E hein Rc bonded bimbo Cn doris C eat addu I eda Padel ra 36 VOLUME crue 37 zd O et E E A AE TTE HR E ata 38 SPEED aaa E AAA 38 ALARN a a r AN 39 MEASURE LE Dc aM AS 39 MEASURES ttasces M tsut s a P LU EA MSR TA MD MM IDEM CIUM lend ee NIE 39 MEASURE DISPLACEMENT VALUE essen nennen nnne nnne nnne nnns nnns 40 TAA SETS So ete utente ent MEM LE A LM EMAIL E SLE ADEL HE 40 zai ONERE RE MCN RA EEE Oe ER eR EOD Seed NTE E dS oe E ARA 40 Emor MESSAGES aonta ai E e UT 41 SEMSORCOMMECUON ENO arnie a e r N o a n 41 Display Value Overload erpina a e eo e a a de DID E EU 41 MPO OV CHO AGE INOM ee aa a a a E S E A EN 41 Measurement ETFOF Bessie e ae e ste tir a aaa a a e at n a 42 USING the MOMORY OCTO COTES 43 ONSISOUTe friGa s ure mie ES urere Eo eiat irc a A A 43 Measurement screen No 1 properties seessssssssssssseseeneenn nennen nennen nennen nnn nnns 44 Measurement screen No 2 properties ccccceecccseeccececesceceeeeceecasecceeceucecsueesueesaeeseaeesseesaas 44 Measurement screen No 3 properties ccccceecccseecesceceececeucecaeeceseeceeseeeceueecaueeseeeseaeesseesaas 45 Measurement screen No 4 properties sesssssssssssssesseseeen nennen nnne nnn nnne nnns 45 M
24. User s Guide Q Q Q uU Qu QU Qu uq uuuuecgutatu Adash 4900 Vibrio M Version 4 00 and later Machine vibration diagnostics Bearing diagnostics Lubrication diagnostics Route measurements 4MB memory Service activities Product Inspection Ex version available Wideband RMS or PEAK measurements of acceleration velocity and displacement Velocity measurement from 10Hz optionally from 1 Hz for low speed machines Time signals measurement Spectrum FFT analysis Measurement in frequency bands for bearing diagnostics Store data and perform route measurements Built in ISO 10816 limits Fault Source Identification and Diagnostics Tool Headphones for listening vibrations Built in Infrared Thermometer Built in stroboscope lamp Built in torch Detection of machine and bearing conditions Detection of machine speed Colour OLED graphic display External piezoelectric accelerometer with 100 mV g sensitivity Overload indicator sensor fault and cable fault indicators Simple control by three buttons Ver 1116 2015 ADASH Ltd Adash 4900 Vibrio M Contents Why perform vibration diagnostics cccccceceeeeeeceeeeeeeeceneseeeeeaeeeeesseneseanecenesenessanesseeesaneaes 5 Why A4900 VID O M 2 cxi chasis duinag RU a A cn UE S ODDLc ES EEX ENS Re iua DR RE SEA MEE 6 The uhnstrument miermiOT V TE cavit s imc cudu rta doxvos vaa apa bond Cc docu eu odi viros u bend cU ecu zedsa ea aue beue iuiOE T IWO MStTU
25. and 315 mm These machines are normally equipped with rolling element bearings Group 3 Pumps with multi vane impeller and with separate driver with rated power above 15 kW Group 4 Pumps with multi vane impeller and with integrated driver with rated power above 15 kW Classification according to foundation An additional setting allows the specification when defining the overall alarm levels of measurements taken from machinery with Rigid or Flexible foundations Evaluation ranges The following evaluation ranges are defined for evaluation of the machine health according to vibrations Range A New machine vibrations should be occasionally in this range Range B Machines in this range can be operated for unlimited period Range C Machines in this range are not acceptable for a long period of operation they can be operated until the repair time only Range D Machines with vibration values in this range should not be operated There is an acute danger of damage to the machine 18 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Classification of vibration values for machines groups 1 and 3 Foundation class Rigid R13 Flexible F13 mm s 2 3 4 9 7 1 3 5 7 1 11 0 RMS velocity values in s 0 09 0 18 0 28 0 14 0 28 0 43 A B B C C D A B B C C D border zone Classification of vibration values for machines groups 2 and 4
26. appears RPM OFF is displayed when the RPM detection is switched off 33 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M MENU for functions selection By pressing D button appears the screen for next choice if memory function is available By pressing the Menu button left upper the instrument menu appears If the instrument is in the error state for example SENSOR ERROR then some functions are not available MEMOR Y VOLUME SETUP ESC LIGHT Torch mode and stroboscope mode TORCH Torch on STROBO Setup stroboscope ESC Escape to the measuring screen MEMORY Memory operation if available ROUTE Route measurement VIEW View of data CLR DATA Clear all measurements in route CLR ALL Clear all data ESC Escape to the measuring screen VOLUME Phone output volume adjustment SETUP This item opens next item selection SPEED Set of speed detection ALARMS Selection of standard which will define limit values MEASURE UNITS Unit options for a measuring of a velocity signal mm s vs ips DISP VAL Detection type options for displacement measurements ESC Escape to the measuring screen SET TIME Time setting ESC Escape to the measuring screen ESC Escape to the measuring screen Menu selection buttons MENU Enter escape button 34 Further technical and contact information can be found at www adash com ADASH Ltd
27. ation Bellow 1 2 kHz the HP filtering is applied and the result would be distorted Advanced tests of velocity measurement Use the shaker and sensor You can make the frequency response and the amplitude response Use the amplitude 10mm s for frequency response test Change the frequency from 6 to 1200 Hz and draw the curve This is the exact response with the sensor Set the 80Hz for amplitude response Change the amplitude from 0 1 to 100 mm s and read values 59 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Advanced tests of acceleration measurement Use the shaker and sensor if you are able to shake high frequencies If your shaker system does not allow it use the signal generator and switch the ICP off Contact your re seller for information how to switch the ICP off That information is not written in this manual You can make the frequency response and the amplitude response Use the amplitude 1g for frequency response test Change the frequency from 500 to 12000 Hz and draw the curve Set the 1 2kHz or higher for amplitude response Change the amplitude from 0 1 to 10g and read values Envelope demodulation test The envelope value is RMS value Do not use comparing with peak values Switch the ICP off and use the 8kHz pure sine signal with 1g 100mV amplitude The ENV should display approx 1 33g When you use the A4801 Sensor Simulator do not switch off the ICP R
28. ature value The ranges of colours are for less than 30 C green 30 45 C yellow 45 60 C orange 60 75 C red and for greater than 75 C dark red 32 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Speed detection and definition After switch on of the instrument the Screen No 1 appears and the automatic speed detection begins It must be said obviously The detection procedure is displayed as running bar in the bottom of screen The result is also displayed on the bottom When the automatic speed detection is not successful see Automatic detection of the machine rotation chapter the last speed value is loaded from the memory and displayed together with the message lt set gt set 1B UU RPM Push arrows it changes the value of speed with the step 250 RPM When the correct speed or the value near the correct speed is defined push Enter button for confirmation If no pushbutton is used for approx 4 seconds then the displayed value is accepted The word set is changed then to MAN This word informs all the time the user that speed is entered manually If you need to set exact value and the 250 RPM step is too much then use the STROBO item from the MENU MANI 1500 RFM RPM set manually RPM detection switched off I RPM OFF If the automatic detection is switch on this procedure of speed detection runs always when the Screen No 1
29. ce 100 ohm Bias Output Voltage 10 14 VDC Case Isolation z 108 ohm Vmax Ci Imax Li Pi 28 V 70nF 100mA 51uH 1W Lithium Iron Disulfide Li FeS ANSI 15 LF IEC FR6 1 5 Volts EA91 E91 NH15 1215 40 C to 60 C 40 F to 140 F 40 C to 60 C 40 F to 140 F 14 5 grams 0 5 oz 8 0 cubic centimeters 0 49 cubic inch 3 0 Amps Continuous 5 0 Amps Pulse 2 sec on 8 sec off 2 uA Less than 1 gram 60 to 210 milliohms depending on method Shelf Life 20 years at 21 C Shipping Please refer to PSDS Document Certifications This battery has Underwriters Certified for intrinsic safety Laboratories component to UL913 7th Ed recognition MH12454 CAN CSA C22 2 No 157 92 Headphones In explosion risk area you can use headphones with impedance 4 320hm and max industance 1mH 62 Further technical and contact information can be found at www adash com ADASH Lid The unit sticker Type A4900 Vibrio Ex SN 625999 A4900 Vibrio Ex Adash s r o Hlubinska 32 702 00 Moravska Ostrava Czech Republic www adash com Il 2 G Ex ib IIC T4 Gb C FTZ 14 ATEX 0130 Tros IP65 20 C lt T lt 50 C U 25 6V 92mA 5 L lt 60uH C 100nF Use only AC90x or AC91x certificated sensor U 5 4V l 235mA L 1mH C 10pF Use only 2x 1 5V AA size Energizer L91 LiFeS certificated batteries Do not open in a hazardous area amp 2x Torx T 10 T E T
30. chanical looseness They are called overall because we can measure them on most of the measuring points on the machine The second figure contains the limit values of roller bearing condition This condition is local and can be measured only on the appropriate bearing house It is easy to understand the graphs below It is necessary to know the speed The instrument A4900 determines the speed automatically or it can be entered manually by the user Look at the graph and find the point on the horizontal axis which corresponds to the speed You will find an intersection with the yellow and red lines above this point Projections to the vertical axis will determine limit values for yellow ALERT or red DANGER states If the measured value is lower than the yellow value the condition is GOOD green If the value is above the yellow value and under the red value then the condition is ALERT yellow If the measured value is higher then the red value then the condition is DANGER red 16 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Adash Limit Values of Machine and Bearing Vibrations Below you can see graphs according to which the instrument determines acceptable vibration limits depending on machine speed 6 0 4 0 24 5 0 0 2 A o 4 0 0 16 c 45 cc E 4 E 3 0 0 12 N N T
31. ct then the defect is already serious and there is an acute danger of unexpected breakdown Measuring vibration velocity does not give the warning early enough before failure of a rolling bearing For accurate bearing condition measurement you have to measure the vibration acceleration Abbreviations used in the guide Abbreviations below are used in the User s guide 12 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M RPM Revolutions per minute CPS Circuits per second RMS RMS value of the measured signal PEAK Peak value of the measured signal 13 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M What You Will Get with Your Instrument Instrument and accessories The instrument case contains an A4900 Vibrio M measuring instrument a vibration sensor accelerometer a magnetic base for the vibration sensor a coiled cable to connect the vibration sensor earphones a measuring tip for putting manual pressure on vibration sensor 2x 1 5V alkaline batteries a CD or a flash drive with the manual Fig Adash 4900 Vibrio M with accessories 14 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Before You Start Ignoring any of the recommendations mentioned below may cause failure of the instrument Handling v
32. e immediately This value will remain stable for some time the bearing will be able to withstand it but then there will be a fast increase and destruction of the bearing This short bearing life can take hours days weeks or even months 3 The reliability of the diagnostics will never be 100 There will be always defects which develop in a time shorter than regular measurements The defects caused by material fatigue can develop in few seconds cracks breaks The proof of the diagnostic performance is primarily a decrease in maintenance costs not to absolute zero and a significant decrease of unexpected breakdowns not their complete elimination 4 Using standards only is possible on certain machines for which these special standards exist It is not possible to simply define limit vibration values in general for a wide range of machines However it is possible to create the standards for special machines e g turbines and these standards are a strong diagnostic tool General standards have a character of recommendation on how to define the limit values The way to find good condition values is to use the measured values of new or repaired machines You can also ask the machine producer for them 5 Shortening of the interval between measurements means more successful prevention of unexpected failures 8 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Machine and b
33. earing condition diagnostics The basic defects which we would like to find are unbalance a heavy spot on the rotor causes vibrations misalignment machinery parts are not in alignment looseness the machine is not properly connected to its base soft foot bearing defects wear of bearing bad assembly bad lubrication or overload The first three listed defects influence the whole machine e g the vibration caused by unbalance can be measured from any point on the machine We use the vibration velocity mm s measurements for this Roller ball bearing condition can only be detected on the nearest point This is a local failure In this case we always measure vibration acceleration g Methods for ball bearing condition diagnostics We can find several methods for bearing condition detection in literature We should repeat again We have to measure vibration acceleration g for correct data acquisition All methods for bearing condition diagnostics must meet that requirement to measure acceleration We can choose different procedures for evaluation of the acceleration signal The measured signal can be imagined as the level of a river It flows with appropriate speed and there are either little or big waves If we want to measure the stream we can measure the flow per hour or actual wave height The value of the flow will be stable and it will change slowly But the wave heights are unstable as there will be significant
34. easurement screen No 3 properties Stored data Velocity time 1 1 000 Hz mm s 2048 samples Velocity spectrum 1 1 000 Hz mm s 800 lines Measurement screen No 4 properties Stored data Acceleration Demod Envelope RMS 500 16 000 Hz g Acceleration Demod Envelope Peak 500 16 000 Hz g Acceleration Demod Envelope time 500 16 000 Hz g 2048 samples Acceleration Demod Envelope spectrum 500 16 000 Hz g 800 lines range 400 Hz Measurement screen No 5 properties Stored data Acceleration time 1 16 000 Hz g 2048 samples Acceleration spectrum 1 16 000 Hz g 800 lines 45 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Measurement screen No 6 properties Stored data Displacement RMS 2 100 Hz um mil Displacement 0 Peak 2 100 Hz um mil Displacement Peak Peak 2 100 Hz um mil Measurement screen No 7 FASIT properties Stored data No data are stored Measurement screen No 8 properties Stored data Temperature measurement 70 to 380 C 94 to 716 F 46 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Route measurements The A4900 Vibrio M instrument enables to perform route measurements Before you start route measurement you have to load route list of machines from computer DDS2014 to the instrument Use the USB cable and connect
35. easurement screen No 5 properties cccccescccseecceeeceuceceueeceuecaueeceeseueeceueesueesaeeseaeeseenseas 45 Measurement screen No 6 properties ccccceecccseeccececeececeueeceeecaueesaeeceueeceueesueesaeeseaeeseesseas 46 Measurement screen No 7 FASIT properties esseeessesessseseeeeennnnnnnnnnnnnn 46 Measurement screen No 8 properties esses nennen nennen nennen nna sanas 46 Isout measuremiellts cssc ueusax cr Qn vere Dep bbndoo ar Yat mra sever arat ad cds M easet sed Dus 47 REJANG Serana rer 49 How to evaluate the failure saci ssicinseniecas dascsscesdcannceutuss ieee paciaodactndeanaencdsuecnncacelwsiwesnsbadeaatavaseaee 51 Overal RMS values 59 559 0 9 nn a A hens t ERE OR uad Cebu 51 Overall T EA Valilessctssuss tems rates achete nte tbi ca teo ETE 52 Spectrum 200 Hz Detection of Looseness ccccccceceeeceseeeeeceeeceeeseeeeeeeaeeeeeeteeeeeeeees 52 Time signal for bearing condition evaluation esseesseeeseeeenne 53 Vibrations in frequency bands gearboxes bearingS ccccceeccceeeceeeceeeeseeeseeeeseesaues 55 Fault Source Identification and DiIAQGNOSTiCS c cece ceccceececeeeceeeeceeseeeeeeeeseeeeaeeesaeeseneess 56 Adash 4900 Vibrio M Specifications cccccccceeeeeeeeeeeceeeseneceneceneceneceeeceeeceeeseesenesenesenes 57 FRESOONSESOSCIICALLOM a un aoc adisse sd ns uova d ste Res uv dunce tetrum dE
36. eference frequency is 2 5 Acceleration measurement amplitude response Measurement accuracy for RMS vibration acceleration 0 1 10 g range on 8kHz reference frequency is 2 5 Sensor sensitivity Before any calibration you need to know what exact sensitivity of sensor is set in the instrument See the switch off screen which contains this information Keep the button pushed and read the information Description of numbers on switch off screen 1 Firmware version 2 Serial number 3 HP filter frequency for bearing 0 5 kHz HP filter frequency for ISO 10 Hz 4 The sensor sensitivity 100 mV g The sensitivity of sensor is usually in 95 105 mV g range Basic test with A4801 Sensor Simulator If you have the A4801 unit you can regularly test the unit on two frequencies 80Hz and 8kHz On the initial A4900 screen are displayed RMS values of velocity and acceleration The velocity value should be 10 mm s and the acceleration should be 0 5g The signal from A4801 is adjusted for exact 100mV g sensitivity When the sensitivity of A4900 unit is e g 95mV g then the higher values 10 5mm s and 0 539 will be displayed Expected values from the A4801 should be multiplied by 100 95 coefficient Basic test with sensor and shaker The procedure should be the same as with A4801 Set on the shaker 10mm s on 80Hz and check the RMS velocity value on the initial screen Then set 0 5g on 1 2 kHz or higher and check the RMS acceler
37. elled as ROUTE data You download them back to the computer and use the software for further data analysis T Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Vibration Diagnostics Basic Information Introduction What is vibration diagnostics This chapter explains the basic steps and you will be able to begin practical measurements You can find more information in the literature When we are talking about vibration diagnostics we mean regular measurements usually every 2 4 weeks whose objectives primarily are 1 Finding vibration level changes which indicate changes of machine operational condition 2 Determining the reasons for this change 3 Recommending maintenance repair adjustment lubrication etc 4 Checking maintenance success including revision of dismantled part s to confirm the analysis Machine vibration diagnostics solves two basic tasks 1 Diagnostics of machine mechanical failure unbalance misalignment mechanical looseness etc 2 Diagnostics of rolling bearing condition Basic Rules 1 If the measured value of vibration increases over time it is a change indicator a worsening of the machine condition 2 If the measured values do not change the machine is in a stable operational condition This does not necessarily mean a good condition For example if a bearing was installed incorrectly then there will be high a signal valu
38. emember that A4801 generates 0 5g only That is why the ENV will display one half of 1 33g 0 66g 60 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Adash 4900 Vibrio Ex _The ATEX Appendix option Specification according to 94 9 EC ATEX directive x 12 G Ex ib IIC T4 Gb ll non mining 2 high protection G Gas atmosphere Ex ib Principe of protection Intrinsic Safety EN 60079 11 Zone 1 IIC Gas group Hydrogen T4 Temperature class 135 C Gb Equip Protection level Zone 1 high protection IP65 20 C lt Ta lt 50 C IP65 INGRESS PROTECTION dust tight and against water jets 20 CsTas50 C ambient temperature range Zones categories Zone 0 gases and vapours 20 dust Explosive atmosphere is present continuously for long periods or frequently Zone 1 21 Explosive atmosphere is likely to occur under normal operation occasionally Zone 2 22 Explosive atmosphere is unlikely to occur in normal operation and if it does will persist for a short period only Using of Instrument Thej A4900 Vibrio Ex unit is certified for using in explosive risk areas zones 1 and 2 with all gases group It means IIA acetone ethanol IIB formaldehyde ether IIC hydrogen acetylene Next conditions must be complies 1 Accelerometer type must be AC90x or AC91x Batteries type must be Energizer L91 1 5V LiFeS technology
39. evious case You can clearly see different bigger range of the graph 1 0 g Damaged bearing TIL g EM 0 33 There are clearly visible shocks caused by a rolling element coming across the damage like pitting or crack here The shocks repeat themselves regularly The range of the graph is different again 2 0 g in this case 54 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Vibrations in frequency bands gearboxes bearings When we need to find the failure on not simple machines e g gearbox then it is very useful to know the vibration values in several frequency bands The screen No 6 shows measurement acceleration values in three frequency bands 0 5 1 5 kHz 1 5 5 kHz and 5 kHz 16 kHz Example We are going to show the analysis procedure on a signal obtained on a seating of an inlet transmission shaft with the speed frequency 25 Hz 1500 rpm and with a gear with 65 teeth So called tooth frequency can be obtained by simple multiplication of the shaft revolution frequency in Hz by the number of teeth fome speed tZ femr gear mesh frequency fspeed speed frequency Z number of teeth In our example the tooth frequency is 1625 Hz so approx 1 6 kHz What are the possibilities The transmission is OK and tooth frequency of 1 6 kHz slightly increases vibrations in the second frequency band Bearing failure vibrations are concent
40. f content of displacement screen RMS P P 0 P P P ESC 67 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M SENSOR The sensor sensitivity Sensor sensitivity rm fur 1 10 set 1 10 gt 68 Further technical and contact information can be found at www adash com
41. he colours means in fault bars of machine and bearing GREEN COLOR It may surprise somebody because why to think about faults when the colour is green But also from low level signal the procedure can read the beginning of the fault But the operation is without restrictions YELLOW COLOR The beginning level of defect is found on the machine It is possible to operate with paying more attention and planning of repair RED COLOR There is the serious defect level found on the machine Machine shouldn t be in operation 56 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Adash 4900 Vibrio M Specifications Input Sensor Input range Measurements Further functions Memory Data storing Interface Software Display Output Power Temp Protection Dimensions Weight Accessories 1x ICP powered accelerometer accelerometer AC 150 genuine CTC AC 150 sensitivity 100mv g 15 frequency response 3dB in 1 10000Hz 60g PEAK with standard 100mV g sensor e g 600g PEAK for 10mV g sensor the sensitivity is editable in the unit Velocity RMS 10 1 000 Hz mm s ips Velocity Peak 10 1 000 Hz mm s ips Acceleration RMS 500 16 000 Hz g Acceleration Peak 500 16 000 Hz g Velocity time 1 1 000 Hz mm s ips 2048 samples Velocity spectrum 1 1 000 Hz mm s ips 800 lines Acceleration time 1 16 000 Hz g 2048 samples
42. ighest measured value in certain time which is important for transient shock events evaluation especially in cases of incipient bearing defects like microscopic peeling off of a hardened surface layer in the place of a rolling element contact with a bearing ring regular shocks contamination of bearing space by metal particles irregular shocks cracks Shocks which cause these defects are also parts of the RMS vibration values However the peak value of such shock is hidden in a value which contains all other information about vibrations i e noise from possible abrading wrong lubrication and overloading To simplify the RMS is an average value of all vibration values achieved in certain time If a large peak value one shock appears in this time period it will be lost in the final recalculation of all the values This practically means that during increasing of this bearing defect that causes the shock the PEAK value of this shock will visibly increase while the effective RMS value will increase only slowly We can discover the initial defect time of the bearing sooner But PEAK value is not so stable as RMS value For bearing condition measurement is the RMS measurement sufficient Spectrum 200 Hz Detection of Looseness 52 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M This screen is important for detection of the mechanical looseness When the graph sh
43. is displayed in Volts range 24V Displacement in 1 1000Hz range Three display options are available to set in setup RMS and 0 PEAK RMS and PEAK PEAK O PEAK and PEAK PEAK 65 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Spectrum 1000Hz or 2500Hz In the setup are two ranges available You need to choose range 1000Hz or 2500Hz The PEAK PEAK value on speed frequency and two max peaks in spectrum are displayed below the spectrum Iil 14 24 um F F 1 0kHz ROD e 150Hz 3 eU Hz Spectrum 200Hz The same as spectrum previous screen only the range 200Hz is different TEC um F F BOO e 150Hz 3 eU Hz Time waveform in 1 1000Hz The number of rotations defined in setup by user default 1 max 6 is displayed in this time waveform screen TEC 66 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Setup Push the Setup button as in standard Vibrio M The next list of options appears CONFIG EVAL SENSOR ESC RevCnt The number of rotations defined in setup by user default 1 max 6 which will be displayed in time waveform screen Count af Revolutions 110 set 1 10 gt CONFIG Contains the speed entering manual autodetect and the range of spectrum 1k 2k5 RPM MAN sinl E RPM AUTO FFT 2k5 ESC ESC EVAL Selection o
44. kHz 16 kHz ing nill mmf S 200Hz 19Hz gt 1 7 BOQHZz 2 1 SoHE 2 0 Spectrum 200 Hz looseness detection FFT analysis of vibrations in the range 0 Hz 200 Hz in mm s RMS with display of 3 maximum peaks found The peaks are arranged according to amplitude vibration size Time signal for roller bearing diagnosis Measuring of time signal and vibrations in the range 0 5 kHz 16 kHz in g Display shows actual measured time signal and Demod geny value 30 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Vibrations in frequency ranges gearbox bearing Measurement of RMS vibration values in the ranges 0 5 kHz 1 5 kHz in g 1 5 kHz 5 kHz in g 5 kHz 16 kHz in g 750 RPM amp U RPM FASIT expert system The FASIT screen displays the severity levels of machine faults Also the temperature bar is displayed on the right side When the RPM is not found then no results are displayed from ver 2 05 Tee d Overall RMS and Peak displacement values in the range 2 100 Hz in mm From ver 2 05 is the displacement displayed in um 31 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Temperature measurement is displayed in Celsius and Fahrenheit degrees Also the coloured bar is used The bearing symbol on the other displays is also coloured according to the actual temper
45. mbol is filled more then more battery power remains If the status goes under 20 the remaining energy shows in red if it is insufficient the symbol is red and the instrument switches itself off ESE displays actual time moving wave signifies measurement in progress Battery status symbol i J i J J 100 approx 50 under 20 just before switching off 28 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Selection of Measurement A selection of measuring screen method can be performed by arrow buttons V A After press of a button an empty screen is shown without measured data and the measuring starts Measuring screen selection buttons Fig Measuring screen selection buttons Measurement Methods Screens 1140 RFM 1140 RPM 1140 RFM Overall RMS values Measurement of RMS vibration values in the ranges 10 Hz 1000 Hz in mm s 0 5 kHz 16 kHz in g with estimated value of machine speed frequency Based on the speed and vibration values of the machine condition colour of displayed value green yellow red is determined The colour of bearing is determined regarding to the measured temperature 29 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Overall PEAK values Measurement of peak vibration values in the ranges 10 Hz 1000 Hz in mm s 0 5
46. n Fig Buttons Switching on the instrument Provided that batteries with sufficient voltage are placed in the instrument then a display will show an instrument Logo Fig Switching on Fig Switching off The instrument is switched off by pressing and holding the same button D for a longer time The POWER OFF label version of firmware and serial number of instrument appear on the display After release the button the instrument switches off Description of numbers on power off screen 1 Firmware version 2 Serial number 3 HP filter frequency for bearing 0 5 kHz HP filter frequency for ISO 10 Hz 4 The sensor sensitivity 100 mV g 2f Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Stand by mode When the user does not press any button for 10 minutes the instrument changes the standard run mode to the Stand by mode the screen is darkened When the user does not operate with the instrument next 30 minutes the instrument switches off Information line After powering on the display shows measured data Beyond descriptions of the measured values and their actual values the display shows an information line in its upper part Fig Information line on a display Meaning of Displayed Symbols Pe setting of headphone output volume is indicated by yellow coloring of the bars Ls this symbol shows an approximate battery status If the battery sy
47. nen nnn nnn nn nnns 14 Instrumerntand accessories sss medien oct dst tec A ere ED eR ricca FER REP OR 14 Perre fol Stal EET TTE AA 15 Standards for vibration measurements 1 eleeeeeeeseeeieen eene nnne n nnn nnn n nnns 16 Adash Limit Values of Machine and Bearing Vibrations eseeeeseesssss 17 Peg EESM ESI aI ValUCS TET 18 Classification according to machine type nominal power or shaft height 18 ISO Groups 1 4 classifications define the following types of machinery 18 Classification according to foundation din evene E vae isUcn Vat uu co but Uueen Lud Pede Ea 18 Evaluation FANGES m 18 Classification of vibration values for machines groups 1 and 3 seeeeeeeeeeesss 19 Classification of vibration values for machines groups 2 and 4 eeeeeeeseseeesss 19 Values setting in A4900 Vibrio M unit leeeseeeeeseeeereeereennnn nnnm 19 COUN CIS CANE writ od tae Eod I Lobos qoES EU IN a Le Deve fup be da UE vs c Ora ses COR OR CU T UD ODu AU ODE UTD cR oer LR UUE 20 Preparation of Measurement POINt ccccccecceeeeseeceeeeeeeteeeeeeeceeceeeeeeeseeeeeeeeeeeeeteeetaess 20 PUTING in Batteries uc aem tate eoe ode ed io edad datu ie abus dua ts Cosa dut e 20 Plugging Im VIDFAtlON e Re T T 21 CONNEC TOD afc R MUS 2
48. nformation can be found at www adash com ADASH Ltd Adash 4900 Vibrio M MEMORY The next screen contains several items which enable to work with memory VIEW CLRDATA CLA ALL ESC ROUTE See the special chapter Using the memory Route measurement for details VIEW This item allows you to view off route stored data properties The first line contain the memory address do not think about it Next lines contain the properties of saved measurements If the RTE is in beginning then this is the route measurement If the point number is in beginning then this is the off route measurement Fa Qe OO T Da Qe OO T CLRDATA It removes all measured data off route and from the route The route list of machines is not removed MEMORY CLR ALL It clears all data in the memory It works like formatting YES WO ESC gt YES WO ESC Clear Data Clear All 36 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M VOLUME The volume bars appear The volume is changed by buttons V A When the maximum volume is reached the symbol will become orange otherwise the amount of yellow filling shows the actual volume If the headphones are off the symbol is grey Next press of the button D returns the instrument back to the measurement mode m Switched off Maximum Fig Volume adjustment Fig Displayed volume During the instrument is swi
49. ng housing We always have to measure at a solid firm part of the machine We should not be measuring on covers and so on The place should be clean without corrosion and paint It should also be flat so a sensor would not wobble It is best to use a measurement base which is glued on the machine It has a perfect surface plastic cover and is made from magnetic stainless steel This will enable you to perform the measurements on the machine at any time under the same conditions Measurement repeatability means that you will be able to compare values well Inserting Batteries The batteries are accessible after opening a lid at the bottom of the instrument Open the lid by pressing its lower edge the edge with hinge the lid upper part opens easily see figure Do not ever use force Proper polarity is shown in the picture Do not forget to switch the instrument off before opening the battery lid Never handle the batteries with the instrument switched on i 1 Press gently Fig Opening the lid 20 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Fig Placement of batteries Fig Proper cell polarity Connecting the Vibration Sensor To measure a vibration signal we need to connect a vibration sensor with ICP powering The A4900 Vibrio M is supplied and calibrated with a standard accelerometer with 100 mV g sensitivity The instrument is equipped with its own
50. oller bearings then higher vibration values can be caused by both sources 9 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M You can find more information about this kind of analysis in the Vibrations in frequency range gearboxes bearings chapter The Fault Source Identification and Diagnostics Tool This tool is included in the Adash 4900 Vibrio M It is good for users because such a function has never been built into an instrument in this price category before This function shows several bar graphs with traffic light colours The two major largest bars are allocated to general machine condition on the left side and ball bearing condition on the right side T PAO RP amp The next three bars are located in the middle They display the severity level of UNBALANCE LOOSENES and MISALIGNMENT from the top Measurement Points The measurement location must enable repeatable measurements under the same conditions as the previous measurement The direction of the sensor radial axial for rotated machines is important as well That is why you should determine measurement points on the machine A typical machine with the measurement points is on the picture below MP 1 MOTOR 10 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M For the measurement in the radial direction we are going to
51. oltage higher then 24 V can cause an accident 1 Always connect only an ICP type sensor into an ICP marked socket If unsure consult the procedure with your supplier 2 Never plug this instrument into 230 V household voltage 3 To power this instrument use batteries with max nominal voltage of 1 5 V 4 To power this instrument use only alkaline or rechargeable NiCd NiMH batteries Regular carbon zinc batteries are not suitable WARNING Use correct battery polarity Incorrect polarity will cause destruction of the instrument HEADPHONES WARNING Listen at moderate volumes to avoid ear damage Remove the headphones from ears when you move the sensor or re connect the cable 15 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Standards for vibration measurements Using standards is a frequent topic in vibration diagnostics As there are a lot of different types of machines it is impossible to determine the critical limits of vibrations for a wide range of machines Its reliability would be then low It could happen that you would repair a machine unnecessarily The standards should rather be determined for a narrow range of machines The A4900 Vibrio M contains Adash limit values and ISO 10816 limit values Adash limits are not rewritten from any existing standard It is a result of more than 20 years of the Adash engineering team s experience It is difficul
52. ows a number of lines typically 3 or 4 with the same space between them and the first line is on the speed frequency see the value description on the bottom probably mechanical looseness is the machine problem The most common causes of this defect are soft flanges loose anchoring bolts cracks in frames cracked welds free play in rotational part seating or possibly other problems not related to mechanical looseness bent shaft See also FASIT chapters Time signal for bearing condition evaluation eoms 0 82 The time signal of bearing vibrations is displayed geny value is under the time signal envelope modulated signal see Methods for ball bearing condition diagnostics chapter Caution the time signal is displayed as a direct record not after envelope modulation Look at three basic screens for easy work with this function Undamaged bearing T C e Rms tJ J Ll Woy g EM 0 16 This bearing generates a low amplitude noise only whose time record shape is steady Its necessary to have a look on the range of the graph left side Signal could look high but it s not when the graph range is low for instance 0 5 g 53 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Undamaged bearing wrong lubrication T o il 1 0 g ENV 0 59 The time record shape is steady too but it has bigger amplitude then pr
53. pe from the route ACK Go to point level of selected machine BCK Return Back to machine level Measurement point level Machine path Measurement point Function keys Route screen point level lt gt Movement between particular points SEL Selection of point and entry to measurements 48 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M After pressing middle SEL button next screen appears L1 Nat measured BCE MEAS ESC Escape from the route MEAS Start measurements on selected point BCK Return Back to point level Readings Push the MEAS button XD Readings defined in this point are taken L1 L1 Wot measured Sot measured vel FF I GK UU lines Measuring Measuring If the temperature measurement is required then always it will be taken as first reading The actual temperature value is displayed on the screen Push ACK for saving or ESC for canceling L1 L1 L1 Jot measured Jat measured Jat measured Teme Temperature Temperature 25 C 78 F PO ESC ACK tored Mot stored Temperature reading in route ACK means Store ESC 49 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M After reading three options appears DEL deletes last reading in selected point ACK saving of reading and return back to the point level saving of
54. rated in the last frequency range 5 16 kHz 55 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Fault Source Identification and Diagnostics Description of FASIT has been described in the beginning of this guide This screen can be displayed behind the screen No 6 right arrow For correct evaluation the speed must be defined The instrument can do it automatically or by user manual entry As it has been described in Screen No 1 section the machine condition is divided into 3 levels which have the same colours like traffic lights The same approach we also use for fault detection 1500 RPM GE In the left bottom corner you see the Machine icon The vertical bar displays the overall machine condition This condition can be evocated by many reasons The unit evaluates severity of 3 sources which are the most occurred in the practice Unbalance circle with heavy spot icon Looseness shoe icon Misalignment clutch icon Correspondent faults horizontal bars are in middle On the right bottom corner you find the rolling bearing icon The vertical bar displays the bearing condition The meaning of Machine and Bearing bars was described in Screen No 1 The temperature bar is displayed quite on right side The ranges of colours are for less than 30 C green 30 45 C yellow 45 60 C orange 60 75 C red and for greater than 75 C dark red What do t
55. rations chapter Fault Source Identification and Diagnostics Tool Press the left arrow on the screen No 1 and the Fault Source Identification and Diagnostics screen appears For correct evaluation the speed must be defined The instrument can do it automatically or by user manual entry In the left bottom corner you see the Machine icon The vertical bar displays the general overall machine condition This condition can be evocated by many reasons The unit evaluates the severity of 3 sources which are the most occurred in the practice Unbalance circle with heavy spot icon Looseness shoe icon Misalignment clutch icon Correspondent faults horizontal bars are in middle 24 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M On the right bottom corner you find the rolling bearing icon The vertical bar displays the bearing condition The Stroboscope The build in stroboscope inside the A4900 Vibrio M represents the unique innovation in the handheld vibration analyzer field We use the high lighting LED technology which low power consumption enables to use the stroboscope in our instrument Stroboscope or stroboscopic lamp commonly called a strobe is the device which produces regular flashes of light When we have to study or to visually inspect the machinery which have cyclically moving parts then the stroboscope enables to froze the moving usually
56. rotation Imagine the simplest form a rotating disc with one spaced hole When the flashes of light are synchronized with the rotational speed of the disc then just one flash is made during one rotation It means the disc is lightened up when the hole is always in the same position It is the principle of illusion of frozen movement See the Menu chapter for details The Torch You sometimes need to inspect or read the dark corners In that time you are lucky with A4900 Vibrio M because this instrument has built in torch in front panel See the Menu chapter for details 25 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Using of headphones The instrument is equipped by a 0 5 W amplifier for connecting of headphones and listening to a measured signal We can connect the headphones by a stereo 3 5 mm jack marked phones on the top of the instrument see figure in the Connectors chapter After connecting we can hear a signal from the vibration sensor in the headphones Advisable volume can be set up by the VOLUME item from the instrument menu see MENU chapter Decrease volume Y Increase volume button button 26 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Instrument Operation Switching on and off The instrument is switched on by pressing of the middle button D Instrument on off butto
57. s damaged and you will be able to order only the specific required maintenance instead of expensive overhauls The periodical measurements will allow you to keep your machines in good health 5 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Why the A4900 Vibrio M When you make a decision to buy a new instrument you always ask what unit is the best for your needs Is it an instrument with a large amount of functions including specialized software for data processing which you will never use or is it an instrument which is easier to use and contains all required functions You should only pay for functions which you will use in the field The A4900 is exactly that instrument The instrument uses a standard external accelerometer with a magnetic base It enables you to perform correct repeatable measurements You should not equate our unit with vibration pens The Adash model A4900 is a multi function portable meter and data collector that bridges the gap between the basic and advanced FFT data collector analyser It includes a complete machine condition expert system than gives results without the use of a computer or laptop It is designed for the field maintenance staff technicians engineers and consultants who need to analyse a rotating machine on site without investing in and carrying expensive instruments to the site This single meter can measure overall vibration mea
58. source of ICP power for the connected sensor The sensor needs to be connected at the right input socket with the supplied cable ADASH 4900 Vibrio Fig The instrument with the connected sensor 21 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Connectors top panel USB IR Temperature input Headphones Stroboscope Micro USB Accelerometer input Contactless IR temperature sensor LEDs for stroboscope and torch Headphones output 3 5 mm jack 22 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M Vibration Measurements Screw the sensor onto the magnetic base Do not forget to remove the plastic cover and the metal washer it closes magnetic field for longer service life of the magnet before measuring Place the plastic cover and the metal washer back on the magnet after measuring Place the magnet on a measuring point very carefully The best thing to do is to rest the edge of the magnet on its side and then slowly attach the sensor to the machine If you bring the magnet near to the machine with its whole area hitting the machine all of a sudden then the strong impact can irreversibly destroy the sensor In case you use a measuring tip instead of a magnet measured values are not going to be stable This is not surprising The measured values considerably depend on the pressure of the tip at the mea
59. surement a band graph an 800 line spectrum a 2048 sample time signals temperature and rotation speed In addition it includes a stroboscope handy inspection torch and stethoscope The A4900 includes ISO 10816 3 standards and an ADASH expert system covering machine health vibration levels which identifies the prime machinery faults Unbalance Looseness and Misalignment A roller bearing health level indicator is also incorporated Many informative screens are available Are your machines working under optimum conditions The A4900 will determine the condition of your bearings including slow running ones identify insufficiently lubricated bearings indicates unbalance looseness and misalignment allow you to check machine speed with its built in stroboscope check machine temperature with its non contact temperature sensor work with Metric or Imperial units The A4900 Vibrio is easy to use A measured parameter is displayed in traffic light colours green orange or red which help you to determine the status of the machine Determination of individual machine or bearing defect types is done directly during operation without the need of a computer or software The A4900 is very compact and rugged and it is designed to fit in the palm of a hand Nevertheless the A4900 is big in performance The A4900 is supplied as a complete kit with an accelerometer coiled cable magnetic base carry case and headphones You can connec
60. surement point A magnet that attaches a sensor generates a constant pressure so the values are stable Attention Use the measuring tip only in places hard to reach where it is not possible to place the magnetic base Temperature measurement An infrared sensor for temperature measurement is aside from the accelerometer input Measurement angle is about 45 degrees around the sensor centre axis The best results are taken with a sensor distance of 10 20 cm from the measured surface The accuracy of the result depends on surface emissivity 100mm dia 200mm 80mm dia 160mm 60mm dia 120mm 40mm dia 80mm 20mm dia 40mm FOV sensor 90deg Size of the scanned area vs distance Measured temperature is displayed in Celsius and Fahrenheit degrees The coloured bar is used as well The bearing symbol on the other displays is also coloured according to the actual temperature value The ranges of colours are following less than 30 C green 30 45 C yellow 45 60 C orange 60 75 C red higher than 75 C dark red 23 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M An automatic detection of the machine speed It s important to know the speed for the evaluation of a machine condition Instrument is looking for speed in the frequency spectrum 200Hz range It is assumed that most of the vibration energy is located on the speed
61. t the headphones to listen to machinery noise related to vibration and process When measuring gearboxes or slow running bearings you will appreciate the benefits of the headphone accessory 6 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M The instrument memory The A4900 Vibrio M has a 4MB data memory Two instrument versions You can buy two versions of this device The basic version cheaper does not have the memory available The advanced version can use the memory Both of them have the memory installed on the board only the firmware is different Upgrade to the advanced version Contact your supplier if you want to upgrade the basic version to the advanced version They can rewrite the firmware in the device Off Route measurement The instrument offers many types of measurement The results are displayed on specific screens Some screens contain more results e g RMS and Peak some screens contain only one e g spectrum You can save each screen to the memory Such data are labelled as OFF ROUTE Route measurements Route is the list of required measurements which you can prepare on a computer actually in the DDS2014 software You load the list to the A4900 Vibrio M instrument and then the standard route arrangement is available You see the name of the sensor location on the screen you mount the sensor on that point and take the reading Such data are lab
62. t to invent a critical value definition which would be simple which means not many parameters such as speed power bearing type machine type and so on and reliable In the figures below you can see how to derive Adash limit values There are three levels of machine condition defined GOOD ALERT Machines that lay in this range are not acceptable for a long period of operation they can be operated until time when they can be repaired and DANGER Vibration values in this range are considered as very dangerous and machines should not be operated The corresponding colours are taken from traffic lights green yellow and red All limit values are related to the speed value Low speed machines should generate lower vibration than higher speed machines You can find three particular areas in the graphs below The GOOD condition is the area up to the yellow line which means operation without restriction The area above the yellow line and under the red line is the ALERT condition It is possible to operate the machine but is has to be checked more frequently and it is necessary to determine the source of the worse condition and plan the repair for instance change the bearing or maintenance balancing alignment The area above the red line is the DANGER condition and the machine should not be operated The first figure contains the values for overall machine condition The value of overall machine condition can determine unbalance misalignment or me
63. tched on or off the range is changed the sensor is connected or disconnected the short unpleasant crack can be heard This is not a defect of the instrument Be careful not to overload the headphone amplifier by excessive volume This will distort a signal in the headphones You can use any stereo or mono headphones with nominal impedance higher than 8 Q Both output stereo channels are connected to the signal Decrease volume Increase volume button button 37 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M SETUP ALARMS MEASURE SEI TIME ESC Further functions menu appeared Choose requested function using arrows and confirm by D Enter SPEED owitch on AUTO ON or switch off AUTO OFF automatic detection of RPM The manual enter is required when AUTO OFF AUTO OFF MANUAL OFF ESC Old version of speed setup New version of speed setup For ver 2 05 and higher more options are available AUTO automatic speed detection MANUAL always manual entry of speed OFF speed value is ignored no limits with relation to speed are used 38 Further technical and contact information can be found at www adash com ADASH Ltd Adash 4900 Vibrio M ALARMS Default R13 R24 F24 MAN 1500 RPM Standards setup Alert limits yellow colour and Danger red colour will be defined See Standards for vibration measurements chapter
64. ze can be ground only in a workshop Anyway the quality of the bearing s housing steel is not high and such a surface can quickly succumb to corrosion Then it becomes unusable The solution to this problem is to use measurement pads The measurement pads are cylinders with a diameter of approx 26 mm and a height of 10 mm with a flat ground surface made of a magnetic stainless steel They are fixed to selected points with a special glue which ensures a perfect transmission of the high frequency vibrations The pad is covered with a plastic cover which is removed only for the measurement Another advantage of the cover is that when the machine is painted your measurement point is preserved The paint would devalue the pad It is sufficient to coarsely grind the machine s surface and degrease it before the pad is glued The durability of the pads in time is unlimited In practice they last until a forcible removal You will need the following an angle grinder a set of files sand paper degreaser ethanol solvent measurement pads and glue Prepare the surface in the following way remove the paint corrosion or unevenness from the surface by grinding degrease the surface The pad is fixed on measurement point with glue We usually use the METAL TECH SG metal repair stick but other cement with similar properties may be used as well L TIER E bL TECH SG zi F TN Tuikanada o akamtia mun phi viskrtu reblin

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