N65 声学仪器与测震仪 标准查询与下载

DIN EN 60645-4:1995 听力计.第4部分:高频声学设备

The document describes equipment which is designed for the measurement of hearing of frequencies higher than the conventional range used in pure tone audiometry. It specifies requirements for audiometric equipment designed for use in pure ton audiometry in the frequency range from 8000 Hz to 16000 Hz.

Audiometers - Part 4: Equipment for extended high-frequency audiometry (IEC 60645-4:1994); German version EN 60645-4:1995

NF S31-001-4:1995 听力计.第4部分:延长高频测听仪

Audiometers. Part 4 : equipment for extended high-frequency audiometry.

NF S31-001-3:1995 听力计.第3部分:听力测定和神经耳科用短时持续听觉试验信号

Audiometers. Part 3 : auditory test signals of short duration for audiometric and neuro-otological purposes.

BS EN ISO 4869-2:1995 声学.听力保护器.第2部分:当佩戴听力保护器时对有效A-加权声压级的估算

Describes three methods (the octave-band, HML and SNR methods) for estimating the A-weighted sound pressure levels effective when hearing protectors are worn. The methods are applicable to either the sound pressure level or the equivalent continuous sound pressure level of the noise. Although primarily intended for steady noise exposures, the methods are also applicable to noises containing impulsive components. They are not suitable for use with peak sound pressure level measurements.

Acoustics - Hearing protectors - Estimation of effective A-weighted sound pressure levels when hearing protectors are worn

NF S31-001-1:1994 测听计.第1部分:纯音测听计

Audiometers. Part 1 : pure-tone audiometers.

NF C97-331:1994 测量传声器.第1部分:实验室标准传声器规范

MEASUREMENT MICROPHONES. PART 1 : SPECIFICATIONS FOR LABORATORY STANDARD MICROPHONES. (EUROPEAN STANDARD EN 61 094-1).

ISO 389-4:1994 声学 校正听力设备的基准零级 第4部分:窄带掩蔽噪声基准级

Specifies reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. The data are given in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.

Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise

IEC 60645-4:1994 听力计 第4部分:高频声学设备

Specifies requirements for audiometric equipment designed for use in pure tone audiometry in the frequency range from 8 000 Hz to 16 000 Hz, in addition to those that are applicable and specified in IEC 645-1. Ensures that extended high-frequency audiome

Audiometers - Part 4: Equipment for extended high-frequency audiometry

IEC 60645-3:1994 测听计 第3部分:声学和耳神经学用短持续试验信号

Specifies a means of describing the physical characteristics of audiometric test and reference signals of short duration and methods for their measurement. Also specifies a psychoacoustic method for determining the level of the test signal in terms of he

Audiometers - Part 3: Auditory test signals of short duration for audiometric and neuro-otological purposes

NF S31-009:1994 声级计

Sound level meters.

NF S31-109/A2:1994 NF EN 60804-1994的修改件2

Amendment 2 to NF EN 60804-1994

NF S31-109:1994 积分-噪音均衡器(EN 60 804)

Intergratting- Averaging sound level meters.

NF C97-902/A1:1994 NF EN 61102-1994的修改件1

Modification 1 of NF EN 61102-1994

BS 6955-11:1994 振动和冲击传感器的校准.横向振动灵敏度的试验方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifi-cations for the instrumentation and procedure to be used for transverse vibration sensitivity testing. It ap-plies to rectilinear velocity and acceleration pick-ups. This part of ISO 5347 is applicable for a frequency range from 20 Hz to 5 000 Hz and a dynamic range from 10 m/s to 1 000 m/s (frequency-dependent) and from 1 mm/s to 1 m/s (frequency-dependent). The limits of uncertainty applicable are ±10% of reading. NOTE 1 Some (especially velocity) pick-ups may require testing by rotational vibration along their sensing axis.

Calibration of vibration and shock pick-ups - Method of test for transverse vibration sensitivity

BS 6955-19:1994 振动和冲击传感器的校正.磁场灵敏度的试验方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifi-cations for the instrumentation and procedure to be used for magnetic field sensitivity testing. It applies to all kinds of pick-ups, whereby pick-up output due to applied magnetic field is determined. This part of ISO 5347 is applicable for a reference magnetic field of 10 T r.m.s. at 50 Hz or 60 Hz. note:1) 1 T (tesla) = 1 Wb/m = 10 Gs (gauss)

Calibration of vibration and shock pick-ups - Method of test for magnetic field sensitivity

BS 6955-18:1994 振动和冲击传感器的校准 瞬态温度敏感性测试方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifi-cations for the instrumentation and procedure to be used for transient temperature sensitivity testing. It applies to piezoelectric pick-ups, whereby pick-up output due to sudden temperature change is meas-ured.

Calibration of vibration and shock pick-ups. Method of test for transient temperature sensitivity

BS 6955-17:1994 振动和冲击传感器的校准 固定温度灵敏度测试方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifi-cations for the instrumentation and procedure to be used for fixed temperature sensitivity testing. It ap-plies to rectilinear pick-ups. This part of ISO 5347 is applicable for the following parameters: — frequency range: 20 Hz to 1 250 Hz; — dynamic range: 0,1 μm to 10 mm (frequency-dependent); 1 mm/s to 1 m/s (frequency-dependent); 10 m/s to 1 000 m/s (frequency-dependent); — temperature range: -45 ℃ to + 800 ℃. The uncertainty applicable is ±10 % of reading.

Calibration of vibration and shock pick-ups. Method of test for fixed temperature sensitivity

BS 6955-16:1994 振动和冲击传感器的校准 安装扭矩灵敏度的测试方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifi-cations for the instrumentation and procedure to be used for mounting torque sensitivity testing. It applies to pick-ups that are mounted by screws, bolts or other threaded fasteners. The change in calibration factor due to the mounting torque is determined. This part of ISO 5347 is applicable for a mounting torque range of one-half of the specified value, the specified value and twice the value of the specified mounting torque.

Calibration of vibration and shock pick-ups. Method of test for mounting torque sensitivity

BS 6955-15:1994 振动和冲击传感器的校准 声灵敏度测试方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifi-cations for the instrumentation and procedure to be used for acoustic sensitivity testing. It applies to ac-celerometers. This part of ISO 5347 is applicable for a frequency range of random noise from 125 Hz to 8 000 Hz and a sound pressure level of 130 dB (reference value: 2 × 10 Pa).

Calibration of vibration and shock pick-ups. Method of test for acoustic sensitivity

BS 6955-14:1994 振动和冲击传感器的校准.钢铸锭无阻尼加速度计共振频率的试验方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifi-cations for the instrumentation and procedure to be used for resonance frequency testing. It is a very limited method applicable exclusively to undamped accelerometers, mainly of the piezoelectric type, hav-ing a mass of less than 30 g. This part of ISO 5347 is applicable for a frequency range from 1 kHz to 50 kHz. The general method for resonance frequency deter-mination, by frequency sweeping and measuring sensitivity as a function of frequency, will be dealt with in a future part of ISO 5347.

Calibration of vibration and shock pick-ups - Method of test for resonance frequency of undamped accelerometers on a steel block