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Summary of Contents for VMI Viber X Series
- Page 1 VIBER X ™ VIBER X1™ Manual ER X1™ Manual Ver. 1.0...
- Page 2 This is especially important when the machine is remote controlled. VMI International AB takes no responsibility for any accidents on people and machines. VMI International AB and our authorized dealers will take no responsibility for damages on machines and plants as the result of the use of VIBER X1™...
- Page 3 VMI International AB and our authorized dealers will take no VMI International AB takes no responsibility for any accidents on people and responsibility for either damages on machines and plants or accidents on machines.
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Page 4: Instrument Overview
Instrument overview Instrument overview The VIBER X ™ is a portable vibrometer to be used in The VIBER X1™ is a portable Vibrometer to be used in preven- preventive and pro-active maintenance work, especially on tive and active maintenance work, especially on rotating machin- rotating machinery. -
Page 5: Bearing Condition
Vibration Measurement Instruments Vibration Measurement Instruments Functions Functions Start of the instrument Start of the instrument Power on the instrument Press the start key and the instrument starts to measure Press the start key and the instrument starts to measure Press the On/Off key and the instrument starts to measure Vibration Measurement Instruments vibration, default is 2 –... - Page 6 Press this symbol key and the measurement of bearing condition will start. The instrument measures instantaneously a bearing Vibration Measurement Instruments condition value in the range between 500 Hz to 20.000 Hz. To go back to vibration measurements, press the symbol once Functions Measuring point location more.
- Page 7 Vibration Measurement Instruments How to make good measurements How to make good measurements The sensitivity direction of the transducer coincides with the The sensitivity direction of the transducer coincides with the center axis of the transducer. Place the accelerometer on the centre axis of the transducer.
- Page 8 horizontal and axial directions. The reason is that you should keep All normal measurements on vertical or horizontal machinery to the main stiffness directions caused by normal non symmetrical should follow the three perpendicular axes of true vertical, properties of the foundation, piping, supports etc. It will result in horizontal and axial directions.
- Page 9 How to interpret vibration measurements How to interpret vibration measurements A user with no previous experience, we recommend to use the A user with no previous experience to interpret the results is ISO 10816-3 standard. recommended to use the ISO 10816-3 standard. The standard normally calls for a velocity measurement in mm/s RMS.
- Page 10 Vibration Measurement Instruments The ISO standard is classifying the machines differently if the The ISO standard classifies the machines differently if the machi- machines are considered as fl exible or rigid mounted. This refl ects nes are flexible or rigid. This reflects the location of the machine’s the location of the machines stiff-body resonance’s related to the stiff-body resonance related to the basic running speed of the machine.
- Page 11 Vibration Measurement Instruments Modern machines often run at high speed and bearing-supports Group 3: are fl exible, foundations should/can be evaluated as fl exible, even Pumps with multivane impeller and with separate driver with when it is not mounted on rubber or springs. rated power above 15kW.
- Page 12 Vibration Measurement Instruments Recommended vibration levels in mm/s and Recommended vibration levels in mm/s and common findings common fi ndings The following is an extraction of part of the old standard ISO 2372 class 4, large machines on flexible foundations, with The following is in part an extraction of the old standard ISO 2372 some common findings added.
- Page 13 Vibration Measurement Instruments Vibration Measurement Instruments Vibration Measurement Instruments • 18 – mm/s • 7 – 18 mm/s Recommended vibration levels in mm/s and Press the bearing symbol and the instrument measures the bearing Very large vibrations and high noise levels. This is detrimental Large vibrations.
- Page 14 Press the bearing symbol and the instrument measures the bearing If the selected frequency band only includes very high fre- condition value. quency noise and vibrations, we would need special vibration Bearing condition value is RMS value of all high frequency vibra- transducers that are very rigidly and closely mounted to the tions in the range of 500 Hz to maximum frequency.
- Page 15 Vibration Measurement Instruments Vibration Measurement Instruments the machine structure works as a mechanical fi lter for high Bearing condition value with unit “g” RMS Bearing condition value with unit “g” RMS Bearing condition value with unit “g” RMS frequencies. VIBER X1™ is measuring the bearing condition value between The diagram above is a guide to identify the bearing condition The diagram above is a guide to identify the bearing condition The diagram below is a guide to identify the bearing condi-...
- Page 16 Bearing condition value with unit “g” RMS Technical data VIBER X The diagram above is a guide to identify the bearing condition value. If vibrations of other causes (e.g. ow surge, gear mesh) are Standard nom 100 (Adjusted to the Accelerometer within in the frequency range 500 –...
- Page 17 * This value can be higher, close to the fi lters cut off frequency. BATTERY TYPE: 3 pc of AAA Rechargeable VIBRATION TRANSDUCER* The accelerometer VMI 192 has a sensitivity 100mV/g +/-10%. MAGNET SUPPORT Length: 20mm, Diameter: 15mm, Magnet force: about 14kg Note! You must avoid to use other accelerometers bacause of the calibration.
- Page 18 Low Voltage Directive: 2006/95/EC Declaration of conformity 8 August 2011 VMI declares that the Viber X1™ is manufactured in conformity with national an VMI declares that the Viber X1™ is manufactured in conformity with national and international regulations. international regulations.
- Page 19 If returning the product, be sure to indicate and attach it in an email to VMI. Check first all natural problems, like empty batte- that the purpose is to make repairs and indicate the original invoice number and ries, broken cables, etc.
- Page 20 VMI International AB Sweden • www.vmiab.com...
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