Iso Vibration Standards

 
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  1. Vibration Test Standards
  2. Iso Vibration Testing Standards
  3. Iso Vibration Standards For Pumps
  4. Iso Vibration Standards For Pumps
  5. Iso 10816 3 Chart
  6. Iso Vibration Limits

1. Overview of Standards

2.2 ISO Standards For Evaluation Of Vibration Severity Standards for evaluation of vibration severity are considered one of the most important activities of ISO/TC108. Unfortunately, due to the range of machinery categories and classifications, it may also be the most confusing. A wide variety of published standards describe acceptable.

ISO 2372 (10816) Standards provide guidance for evaluating vibration severity in machines operating in the 10 to 200 Hz (600 to 12,000 RPM) frequency range. 9) Buscarello, Ralph, Practical Solutions to Machinery & Maintenance Vibration Problems, p. 156, Vibration Tolerances, Update International, CO, 1991 10) ISO 10816-1, Mechanical Vibration – Evaluation Of Machine Vibration By Measurements On Non-Rotating Parts – Part 1: General Guidelines, First Edition 1995-12-15, ISO, Switzerland, 1995. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1940-1 was prepared by Technical Committee ISO/TC 108, Mechanical vibration and shock, Subcommittee SC 1, Balancing, including balancing machines. This second edition cancels and replaces the first edition (ISO 1940-1:1986), which has been technically. 2) Sohre-Erskine R/C Standards (shaft vibration, fluid film bearings) 3) ISO 7919 (shaft vibration, fluid film bearings) 4) OEM Specifications PROS: a) Can be applied to plant equipment from the beginning of a condition monitoring program. No prior machine history is necessary to make a basic assessment of a machine’s condition. VIBRATION LIMITS AS PER ISO 10816 STANDARDS (Velocity in mm/sec-RMS) Machine class: 1 Individual parts of engines and machines integrally connected with the complete machine in its normal operating condition. ISO 10816 Vibration Severity Standards. ISO 2372 (10816) Standards provide guidance for evaluating vibration severity in machines operating in the 10 to 200Hz (600 to 12,000 RPM) frequency range. Examples of these types of machines are small, direct-coupled, electric motors and pumps, production motors, medium motors, generators.

Weighting Filters

A-, B-, and C-Weighting Filters

  • ANSI S1.4-2014
  • ANSI S1.42-2001
  • IEC 61672-1:2013
  • JIS C 1509-1:2005

Weighting Filters

  • ITU-R 468-4
  • JIS C 6102:1998
  • Dolby

Telecommunications Weighting Filters

  • ITU-T 0.41 (CCITT)
  • Bell System Technical Reference 41009 (C-message)

Human Vibration Weighting Filters

  • ISO 8041:2005 (E): Human Response to Vibration – Measuring Instrumentation
  • JIS B 7760:2004: Whole-Body Vibration
  • JIS B 7761:2004: Hand-Transmitted Vibration

Octave Analysis

  • ANSI S1.11-2014: Electroacoustics - Octave-band and fractional-octave-band filters, class 1
  • IEC 61260:2014: Electroacoustics - Octave-band and fractional-octave-band filters, class 1
  • JIS C 1514:2002: Electroacoustics - Octave-band and fractional-octave-band filters, class 1

Sound Level

  • ISO/IEC 61672-1:2002
  • ANSI S1.4-1983


2. Weighting Filters

A-, B-, and C-Weighting Filters

ANSI Standards

When combined with any DSA device, the weighting filter used by the SVT A, B, C Weighting Filter (Fixed Rates) VI or designed by the SVT Weighting Filter VI complies with the following standards:

The SVT Weighting Filter VI accommodates any sample rate greater than 4 kHz and designs the filter coefficients to target the attenuation curves defined by the ANSI standards. Given the selected sampling frequency, compliance with a particular filter type, either Type 1 or Type 0, is ensured up to a specific frequency. This frequency is the maximum frequency within tolerances. Use the SVT Max Frequency Within Tolerances [ANSI] VI to determine the maximum frequency within tolerances. The SVT A, B, C Weighting Filter (Fixed Rates) VI supports the following sample rates:

4 kHz, 8 kHz, 10 kHz, 11.025 kHz, 12.8 kHz, 20 kHz, 22.05 kHz, 25.6 kHz, 40 kHz, 44.1 kHz, 48 kHz, 50 kHz, 51.2 kHz, 80 kHz, 96 kHz, 100 kHz, 102.4 kHz, 192 kHz, 200 kHz, 204.8 kHz, 500 kHz, 1 MHz

For all supported sample rates the VI achieves Type 0 compliance to the Nyquist frequency.

ISO/IEC Standard

Use the SVT A, B, or C Weighting Filter (Fixed Rates) VI or the SVT Weighting Filter VI to apply an A-, B-, or C-weighting filter to time-domain signals. When combined with any DSA device, the weighting filter used by the SVT A, B, or C Weighting Filter (Fixed Rates) VI or designed by the SVT Weighting Filter VI complies with:

  • IEC 61672-1:2002

The SVT Weighting Filter VI accommodates any sample rate greater than 4 kHz and designs the filter coefficients to target the attenuation curves defined by the IEC standards. Given the selected sampling frequency, compliance with a particular filter type, either Class 2 or Class 1, is ensured up to a specific frequency. This frequency is the maximum frequency within tolerances. Use the SVT Max Frequency Within Tolerances [IEC] VI to determine the maximum frequency within tolerances. The SVT A, B, C Weighting Filter (Fixed Rates) VI supports the following sample rates:

4 kHz, 8 kHz, 10 kHz, 11.025 kHz, 12.8 kHz, 20 kHz, 22.05 kHz, 25.6 kHz, 40 kHz, 44.1 kHz, 48 kHz, 50 kHz, 51.2 kHz, 80 kHz, 96 kHz, 100 kHz, 102.4 kHz, 192 kHz, 200 kHz, 204.8 kHz, 500 kHz, 1 MHz

For all supported sample rates the VI achieves Class 1 compliance to the Nyquist frequency.

Radiocommunications Weighting Filters

ITU-R 468-4 and Dolby

When combined with any DSA device, the weighting filter used by the SVT Radiocommunications Weighting Filter (Fixed Rates) VI complies with the ITU-R 468-4 standard. The SVT Radiocommunications Weighting Filter (Fixed Rates) VI accommodates the following sample rates:

20 kHz, 22.05 kHz, 25.6 kHz, 40 kHz, 44.1 kHz, 48 kHz, 50 kHz, 51.2 kHz, 80 kHz, 96 kHz, 100 kHz, 102.4 kHz, 192 kHz, 200 kHz, 204.8 kHz, 500 kHz, 1 MHz

Iso 10816 standards

For all supported sample rates, the VI achieves compliance to the Nyquist frequency.

Telecommunications Weighting Filters

When combined with any DSA device, the weighting filter used by the SVT Telecommunications Weighting Filter (Fixed Rates) VI complies with the following standard and reference:

  • ITU-T 0.41 (CCITT)
  • Bell System Technical Reference 41009 (C-message)

The SVT Telecommunications Weighting Filter (Fixed Rates) VI supports the following sample rates:

4 kHz, 8 kHz, 10 kHz, 11.025 kHz, 12.8 kHz, 20 kHz, 22.05 kHz, 25.6 kHz, 40 kHz, 44.1 kHz, 48 kHz, 50 kHz, 51.2 kHz, 80 kHz, 96 kHz, 100 kHz, 102.4 kHz, 192 kHz, 200 kHz, 204.8 kHz, 500 kHz, 1 MHz

For all supported sample rates, the VI achieves compliance to the Nyquist frequency.

Human Vibration Weighting Filters

Vibration Test Standards

When combined with any DSA device, the human vibration weighting filters that the Sound and Vibration Measurement Suite provides comply with ISO 8041:2005 (E): Human Response to Vibration – Measuring Instrumentation.

The Sound and Vibration Measurement Suite provides the following weighting filters that you can apply to human vibration signals:

  • Wb—Weighting for vertical whole-body vibration, z–axis, seated, standing or recumbent person, based on ISO 2631–4.
  • Wc—Weighting for horizontal whole-body vibration, x–axis, seat back, seated person, based on ISO 2631-1.
  • Wd—Weighting for horizontal whole-body vibration, x– or y–axis, seated, standing or recumbent person, based on ISO 2631-1.
  • We—Weighting for rotational whole-body vibration, all directions, seated person, based on ISO 2631-1.
  • Wf—Weighting for vertical whole-body vibration, z–axis motion sickness, seated or standing person, based on ISO 2631-1.
  • Wh—Weighting for hand-arm vibration, all directions, based on ISO 5349-1.
  • Wj—Weighting for vertical head vibration, x–axis recumbent person, based on ISO 2631-1.
  • Wk—Weighting for vertical whole-body vibration, z–axis seated, standing or recumbent person, based on ISO 2631-1.
  • Wm—Weighting for whole-body vibration in buildings, all directions, based on ISO 2631-2.


3. Octave Analysis

Overview

The Octave Analysis VIs can accommodate any sampling frequency and any number of fractional-octave bands. These VIs offer compliance with the following standards:

  • ANSI S1.11-2014: Electroacoustics - Octave-band and fractional-octave-band filters, class 1
  • IEC 61260:2014: Electroacoustics - Octave-band and fractional-octave-band filters, class 1

Midband Frequencies

According to the IEC 61260:2014 and the ANSI S1.11-2014 standards, the exact mid-band frequencies, fm, of any filter in a set of filters shall be determined from the following expression:

fm = frGx/b, when b is odd

fm = frG(2x+ 1)/2b, when b is even

Where fr is the reference frequency, G = 100.3 is the octave frequency ratio, 1/b is the bandwidth designator, and equals 1 for octave, 1/3 for 1/3 octave, 1/6 for 1/6 octave, 1/12 for 1/12 octave, and 1/24 for 1/24 octave, x is any integer, positive or negative, or zero.

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Nominal Frequencies

Iso Vibration Testing Standards

The exact midband frequencies are used to design the filters for fractional-octave analysis. However, all the octave analysis tools in the Sound and Vibration Measurement Suite return the nominal midband frequencies, also called the preferred frequencies. In the case of octave and 1/3 octave analyses, the nominal frequencies are calculated in accordance with the ANSI and IEC standards. In the case of 1/6, 1/12, and 1/24 octave analyses, the nominal frequencies are calculated in accordance with the Annex E (informative) of the IEC 61260:2014 and the ANSI S1.11-2014 standards.

Card

Compliance with ANSI and IEC Standards

When combined with any National Instruments DSA device, the appropriate microphone, and proper signal conditioning, the filters produced by the octave analysis tools in the Sound and Vibration Measurement Suite comply with the following standards:

  • ANSI S1.11-2014: Electroacoustics - Octave-band and fractional-octave-band filters, class 1
  • IEC 61260:2014: Electroacoustics - Octave-band and fractional-octave-band filters, class 1
  • JIS C 1514:2002: Electroacoustics - Octave-band and fractional-octave-band filters, class 1

For octave filters, choose a sampling frequency at least three times the exact center frequency of the highest frequency band. For fractional-octave filters, choose a sampling frequency at least 2.5 times the exact center frequency of the highest frequency band.


Iso Vibration Standards For Pumps

4. Sound Level

Iso Vibration Standards For Pumps

When combined with any National Instruments DSA device, the appropriate microphone, and proper signal conditioning, the Sound Level VIs are compliant with the ISO/IEC 61672-1:2002 standard.

Iso 10816 3 Chart

National Instruments dynamic signal acquisition boards combined with the NI LabVIEW Sound and Vibration Software, have been tested and found compliant with several ANSI and IEC standards including the requirements for a class 1 instrument specified in IEC 61672-1: 2002. The filters used meet the requirements for a class 1 instrument specified in IEC 61260: 1995.

Iso Vibration Limits

For a complete system, a suitable microphone compatible with ANSI S1.4 or IEC 651 requirements for a Type 1 precision microphone needs to be specified.