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Masibus VM908 Operator's Manual
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Masibus VM908 Operator's Manual

Portable vibration meter
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Doc.Ref.No.:mVMT/om/101
Issue No.
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Model
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Operator's Manual
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Masibus Automation And Instrumentation Pvt. Ltd.
B/30, GIDC Electronics Estate,
Sector-25, Gandhinagar-382044, Gujarat, India.
Ph: 91 79 23287275 - 79
Fax: 91 79 23287281, 82
Email: support@masibus.com
Web:
www.masibus.com
Operator's Manual VM-908 Vibration meter
Page 1 of 11
02/05/16

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mansi
February 20, 2025

vibration meter model vm908 what is least count

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mansi
February 20, 2025

Vibration Meter Range

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1 comments:
Mr. Anderson
February 20, 2025

The Masibus VM908 vibration meter has a velocity measurement range of 0.1 to 199.9 mm/s.

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Summary of Contents for Masibus VM908

  • Page 1 Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 Operator’s Manual Masibus Automation And Instrumentation Pvt. Ltd. B/30, GIDC Electronics Estate, Sector-25, Gandhinagar-382044, Gujarat, India. Ph: 91 79 23287275 - 79 Fax: 91 79 23287281, 82 Email: support@masibus.com Web: www.masibus.com Operator’s Manual VM-908 Vibration meter...

  • Page 2: Table Of Contents

    Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 CONTENTS 1. TECHNICAL DETAILS 2. SPECIFICATIONS 3. PREPARATION 4. MEASUREMENT 5. NOTES Operator’s Manual VM-908 Vibration meter Page 2 of 11 02/05/16...

  • Page 3: Technical Details

    Vibration is measured in terms of R.M.S. and peak. When overall vibration is to be measured, R.M.S. and peak measurement technique is considered best for general machine health. VM908 is very handy easy to use device for any maintenance crew. It gives very easy understanding of equipment health and guides for repairs.

  • Page 4: Preparation

    Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 Measurement accuracy:  5% of display  2 digits  Noise Level (without input): ACC<0.3 m/s  VEL<0.5mm/s,  Displacement<3m  Frequency response accuracy:  5 %;  10 % f o r A CC 4 .5 k Hz - 10 k Hz ...

  • Page 5: Measurement

    Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 2). Check the voltage of the battery: a. Press <Measure> key, observe the display on the screen. If there is an arrow on the top left corner, you need to replace the battery with a new one.

  • Page 6: Notes

    Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 b. Key release: Hold the measured value for twenty seconds and then power off automatically. 3). Stick the probe to the measured object (the pressure should be about 0.5-1 kg.) 5. NOTES 1. Avoid intense impact, high temperature and immersion in water.
  • Page 7 Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 For instance, a machine supported by rubber or springs often have resonance’s at low running speeds. The machine starts vibrate at certain low rpm. When the speed is increased above these resonance frequencies the vibration is reduced.
  • Page 8 Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 Recommended vibration levels in mm/s common findings. The following is in part an extraction of the old standard ISO 2372 class 4, large machines on flexible foundations, with some common findings added. This simplified list can be used, as a first consideration, when you approach a machine newly commissioned or after some time in operation.
  • Page 9 Issue No. Model : VM908 One common resonance frequency is the critical speed of a shaft which depends on the stiffness and mass of the shaft, but Resonances exist in all machine parts as well as in supporting beams and concrete floors.
  • Page 10 Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 Because this is a wide-band noise and vibration it is possible to select any frequency or frequency band as a measurement of bearing condition. If the selected frequency band includes low frequencies the bearing condition value would also include vibrations from unbalances, misalignment, etc.
  • Page 11 Doc.Ref.No.:mVMT/om/101 Issue No. Model : VM908 Balancing with VIBRATION METER (VM-908) It is only possible to balance machines where the unbalance is the major cause of vibration. Do not change the position of the vibration transducer after starting the balancing procedure Balancing using this method requires only three consecutive trial runs and changing the balance status of the rotor.