17.140.20 机器和设备的噪声 标准查询与下载



共找到 661 条与 机器和设备的噪声 相关的标准,共 45

IEC 60534-8-3:2010 establishes a theoretical method to predict the external sound-pressure level generated in a control valve and within adjacent pipe expanders by the flow of compressible fluids. This method considers only single-phase dry gases and vapours and is based on the perfect gas laws. It is assumed that the downstream piping is straight for a length of at least 2 m from the point where the noise measurement is made. The method is applicable to the following single-stage valves: - globe (straight pattern and angle pattern), - butterfly, - rotary plug (eccentric, spherical), - ball, and - valves with cage trims. Specifically excluded are the full bore ball valves where the product FpC exceeds 50 % of the rated flow coefficient. This third edition cancels and replaces the second edition published in 2000. This edition constitutes a technical revision. The significant technical changes with respect to the previous edition are as follows: - predicting noise as a function of frequency; - using laboratory data to determine the acoustical efficiency factor.

Industrial-process control valves - Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method

ICS
17.140.20
CCS
发布
2011-01-21
实施
2011-04-01 (7)

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for small, movable sources in reverberant fields - Part 1: Comparison method for a hard-walled test room (ISO 3743-1:2010);

ICS
17.140.20
CCS
Z32
发布
2011-01
实施

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections.

ICS
17.140.20
CCS
Z32
发布
2010-12-01
实施
2010-12-03

This International Standard - gives information on the declaration of noise emission values, - describes acoustical and product information to be presented in technical documents for the purposes of noise emission declaration, and - specifies a method for verifying the noise emission declaration. It is applicable to machinery and equipment. The values to be used for the purposes of noise emission declaration are either declared singlenumber noise emission values, L,, or declared dualnumber noise emission values, L and K. L is a noise emission value determined directly from measurements and K is the uncertainty associated with those measurements. Ld is the sum of L and K and represents an upper limit which values from repeated measurements are unlikely to exceed at a given confidence level; Ld corresponds to the stated or labelled value, Lc, defined in IS0 7574-l. The two forms of noise declaration are alternative means of representing any or all of the A-weighted sound power level, &*, the A-weighted emission sound pressure level at specified positions, LpA, and the C-weighted peak emission sound pressure level at specified positions, Lpc peak. The choice as to which of the two forms is used’in a particular case depends upon the requirements to be fulfilled. This selection is made, and guidance on the values of K is given, in the appropriate noise test code.

Acoustics – Declaration and verification of noise emission values of machinery and equipment

ICS
17.140.20
CCS
发布
2010-10-31
实施

This International Standard specifies the method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in an essentially free fleld over a reflecting plane.

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections (ISO 1

ICS
17.140.20
CCS
Z32
发布
2010-10
实施

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections (ISO 11202:2010); German version EN ISO 11202:2010

ICS
17.140.20
CCS
Z32
发布
2010-10
实施

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections (ISO 11204:2010); German version EN ISO 11204:2010

ICS
17.140.20
CCS
Z32
发布
2010-10
实施

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections (ISO 11204:2010)

ICS
17.140.20
CCS
发布
2010-09-30
实施
2010-09-30

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections (ISO 11202:2010)

ICS
17.140.20
CCS
发布
2010-09-30
实施
2010-09-30

1.1 GeneralThis International Standard specifies a method for determining the emission sound pressure levels ofmachinery or equipment, at a work station and at other specified positions nearby, in an essentially free field over a reflecting plane. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander pos

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections

ICS
17.140.20
CCS
发布
2010-09-03
实施
2010-09-03

This International Standard specifies a method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in situ. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions. Emission sound pressure levels are determined as A-weighted levels. Additionally, levels in frequency bands and C-weighted peak emission sound pressure levels can be determined in accordance with this International Standard, if required. NOTE 1 The contents of the series ISO 11200 to ISO 11205 are summarized in ISO 11200. Methods are given for determining a local environmental correction (subject to a specified limiting maximum value) to be applied to the measured sound pressure levels in order to eliminate the influence of reflecting surfaces other than the plane on which the source under test is placed. This correction is based on the equivalent sound absorption area of the test room and on radiation characteristics (source location or directivity at the work station). With the method specified in this International Standard, results of accuracy grade 2 (engineering grade) or accuracy grade 3 (survey grade) are obtained. Corrections are applied for background noise and, as described above, for the acoustic environment. Instructions are given for the mounting and operation of the source under test and for the choice of microphone positions for the work station and for other specified positions. One purpose of the measurements is to permit comparison of the performance of different units of a given family of machines, under defined environmental conditions and standardized mounting and operating conditions. NOTE 2 The data obtained can also be used for the declaration and verification of emission sound pressure levels as specified in ISO 4871.

Acoustics. Noise emitted by machinery and equipment. Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections

ICS
17.140.20
CCS
Z32
发布
2010-08-31
实施
2010-08-31

This International Standard specifies a method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in an essentially free field over a reflecting plane. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions. Emission sound pressure levels are determined as A-weighted levels. Additionally, levels in frequency bands and C-weighted peak emission sound pressure levels can be determined in accordance with this International Standard, if required. NOTE 1 The contents of the series ISO 11200 to ISO 11205 are summarized in ISO 11200. With the method specified in this International Standard, results of accuracy grade 1 (precision grade) or accuracy grade 2 (engineering grade) are obtained. Corrections are applied for background noise, but not for the acoustic environment. Instructions are given for the mounting and operation of the source under test and for the choice of microphone positions for the work station and for other specified positions. One purpose of the measurements is to permit comparison of the performance of different units of a given family of machines, under defined environmental conditions and standardized mounting and operating conditions. NOTE 2 The data obtained can also be used for the declaration and verification of emission sound pressure levels as specified in ISO 4871

Acoustics. Noise emitted by machinery and equipment. Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections

ICS
17.140.20
CCS
Z32
发布
2010-08-31
实施
2010-08-31

This International Standard specifies a method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in any environment which meets certain qualification requirements. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions. Emission sound pressure levels are determined as A-weighted levels. Additionally, levels in frequency bands and C-weighted peak emission sound pressure levels can be determined in accordance with this International Standard, if required. NOTE 1 The contents of the series ISO 11200 to ISO 11205 are summarized in ISO 11200. A method is given for determining a local environmental correction (subject to a specified limiting maximum value) to be applied to the measured sound pressure levels to exclude the effects of reflections from reflecting surfaces other than the plane on which the source under test is placed. This correction is based upon the mean sound pressure level on a measurement surface, the sound pressure level measured at a specified position, and either an environmental correction or the equivalent absorption area of the test room. With the method specified in this International Standard, results of accuracy grade 2 (engineering grade) or accuracy grade 3 (survey grade) are obtained. Corrections are applied for background noise and, as described above, for the acoustic environment. Instructions are given for the mounting and operation of the source under test and for the choice of microphone positions for the work station and for other specified positions. One purpose of the measurements is to permit comparison of the performance of different units of a given family of machines, under defined environmental conditions and standardized mounting and operating conditions. NOTE 2 The data obtained can also be used for the declaration and verification of emission sound pressure levels as specified in ISO 4871.

Acoustics. Noise emitted by machinery and equipment. Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections

ICS
17.140.20
CCS
Z32
发布
2010-08-31
实施
2010-08-31

1.1 GeneralThis International Standard specifies a method for determining the emission sound pressure levels ofmachinery or equipment, at a work station and at other specified positions nearby, in any environment which meets certain qualification requirements. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source. One or more specified positions may be located in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions.Emission sound pressure level

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections

ICS
17.140.20
CCS
发布
2010-08-19
实施
2010-08-19

1.1 GeneralThis International Standard specifies a method for determining the emission sound pressure levels ofmachinery or equipment, at a work station and at other specified positions nearby, in situ. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended orunattended machine. Such positions are sometimes referred to as bystander positions.Emission sound pressure levels are dete

Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections

ICS
17.140.20
CCS
发布
2010-08-19
实施
2010-08-19

Acoustics. Noise emitted by machinery and equipment. Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions

ICS
17.140.20
CCS
发布
2010-07-31
实施
2010-07-31

This International Standard provides brief summaries of the basic International Standard for determining emission sound pressure levels from all types of machinery and equipment,at work stations and at other specified positions,and gives guidance on the process of selection of which is appropriate to any particular type.The guidance given applies only to airborne sound,and is for use in the preparation of noise test codes,and also for use in noise testing where no noise test code exists. It is important that specific noise test codes for various types of machinery and equipment be established and used in accordance with the requirements of these basic Interantional Standard.Such standardized noise test codes will give detail requirements on mounting and operating conditions for the particular family to which the machine under test belongs,as well as the location of the work station(s) and other specified positions as prescribed in these International Standards.The data so obtained may also be used for the declaration and verification of emission sound pressure levels as specified in ISO 4871.

Acoustics - Noise emitted by machinery and equipment - Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions

ICS
17.140.20
CCS
Z32
发布
2010-07-31
实施
2010-07-31

Test code for the determination of airborne acoustical noise emitted by household and similar electrical appliances - Part 1: General requirements (IEC 60704-1:1982)

ICS
17.140.20
CCS
发布
2010-07-16
实施
2010-07-16

This International Standard specified the technical requirements of a noise test code for a specific family of machinery or equipment.It is primarily applicable to stationary machinery and equipment,including hand-held tools,as well as those that present hazards due to mobility or load lifting. The purpose of a noise test code is to permit comparable test results to be obtained on the noise emissions of machines from the same family,thus enabling users to make comparisons and to check the declared noise test code are also useful for noise specifications in private contracts,for planning and for noise reduction purposes. Specific test codes for various types of machinery and equipment are established and used in accordance with the requirements of basic International Standards.Standardized noise test codes give detailed requirements on mounting,loading and operating conditions for the particular family to which the machinery under test belongs,as well as the location of a work station(s) and other specified positions (if any).

Acoustics - Noise emitted by machinery and equipment - Rules for the drafting and presentation of a noise test code

ICS
17.140.20
CCS
Z32
发布
2010-05-31
实施
2010-05-31

Acoustics. Noise emitted by machinery and equipment. Rules for the drafting and presentation of a noise test code

ICS
17.140.20
CCS
发布
2010-05-31
实施
2010-05-31



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