FprEN IEC 63305:2023由欧洲电工标准化委员会 IX-CENELEC 发布于 2024-04-05 (7),并于 - 实施,于 - 废止。
FprEN IEC 63305:2023在国际标准分类中归属于: 17.140.50 电声学。
FprEN IEC 63305:2023 水下声学 频率范围 5 Hz 至 10 kHz 的声波矢量接收器的校准的最新版本是哪一版?
最新版本是 FprEN IEC 63305:2023 。
IEC 63305:2024 specifies methods and procedures for calibration of vector receivers in the frequency range 5 Hz to 10 kHz, which are applicable to vector receivers based on the two different principles. In addition, it describes an absolute method of inertial vector receiver calibration in air using optical interferometry. Usually, acoustic wave vector receivers are designed and constructed based on one of two principles. One is the sound pressure difference (gradient) principle. When measuring with this sensor, the vector receiver is rigidly fixed on a mount and supported in water. The other is the co-vibrating (inertial) principle. When measuring with this sensor, the vector receiver is suspended on a mount and supported in water in a non-rigid manner, which allows the vector receiver co-vibrate in the same direction as the sound particle in the sound wave field. Many methods have been used to calibrate vector receivers, such as free-field calibration, calibration in standing wave tube and calibration in a travelling wave tube.
用于门控及电梯的传感器 光电式传感器附件 ——超声波传感器 对射型传感器 漫反射和反射板型传感器 双张检测传感器 超声波传感器附件 超声波传感器性能特点: ——人们能听到声音是由于物体振动产生的,它的频率在20HZ-20KHZ范围内,超过20KHZ称为超声波,低于20HZ的称为次声波。...
规格 频率 赫兹 250(251.19±0.30 Hz)或1 kHz(1000±1 Hz) 声压级 分贝 94(±0.2分贝)或114(±0.2分贝) ANSI标准 S1.40 IEC标准 六万零九百四十二 温度范围,操作 °C/°F -10至+50/14至122 电池类型 LR03(AAA) CE/RoHS...
罗德与施瓦茨 ZNB8罗德与施瓦茨 ZNB8 矢量网络分析仪具有高达 140 dB(在 10 Hz 中频带宽下)的宽动态范围、低于 0.004 dB RMS(在 10 kHz 中频带宽下)的低迹线噪声和高达 + 13 dBm,可在超过 95 dB 的范围内进行电子调节。ZNB8 专为射频元件生产和开发中的苛刻应用而设计,特别是在移动无线电和电子产品行业。...
此次发布的基准将频率范围扩展到2 Hz,并提高了低频段的不确定度水平,解决了国内空气次声量值的溯源问题。 耦合腔互易法声压基准,从无到有建立了空气中的次声波测量能力,在频率范围和测量不确定度水平上达到与英国NPL、德国PTB等发达国家实验室同等水平,解决了空气中次声波的量值溯源问题。国际关键比对结果验证表明,基准整体能力达到国际先进水平。...
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