ISO 2954 specifies requirements for vibration severity measuring instruments used for evaluating machine condition. It defines frequency response, accuracy, and filter characteristics for vibration meters measuring broadband velocity.

What frequency range does ISO 2954 require?

ISO 2954 requires a measurement frequency range of 10 Hz to 1000 Hz for vibration velocity (RMS). The response must be flat within ±5% (±0.5 dB) across this range with specified roll-off characteristics outside.

What is the required accuracy for ISO 2954?

The overall accuracy must be within ±5% of reading at reference conditions, and within ±10% over the full operating range including temperature and humidity variations. Linearity must be within ±5%.

What filter types are specified?

ISO 2954 specifies bandpass filtering from 10 Hz to 1000 Hz. The low-frequency roll-off must be at least -12 dB/octave below 10 Hz, and the high-frequency roll-off at least -12 dB/octave above 1000 Hz. This ensures the instrument measures only the relevant frequency range.

Is ISO 2954 still current?

ISO 2954:2012 is the current edition. While many modern analyzers exceed its requirements, ISO 2954 compliance remains important for contractual and regulatory purposes, especially for ISO 10816/20816 vibration severity measurements.

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振動儀器等級驗證

驗證您的振動測量儀器是否符合 ISO 2954 等級要求。輸入儀器規格以檢查是否符合頻率範圍、精度和濾波器要求。

ISO 2954儀器等級10–1000 Hz

符合性檢查

整體符合性

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頻率範圍

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精度

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濾波器滾降

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線性度

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ISO 2954 關鍵要求

參數	要求
頻率範圍	10 Hz 至 1000 Hz (速度)
帶內平坦度	±5% (±0.5 dB)
參考點精度	±5% 讀數
整體精度	±10% (含環境因素)
濾波器滾降	≥ −12 dB/octave
線性度	±5% 滿量程
測量量	速度、RMS、寬頻

頻率響應要求

範例 — 符合性儀器檢查

已知： 範圍 10–1000 Hz，精度 ±5%，滾降 −12 dB/oct，線性度 ±3%

頻率：10 ≤ 10 Hz ✓，1000 ≥ 1000 Hz ✓

精度：5% ≤ 5% ✓

滾降：12 ≥ 12 dB/oct ✓

線性度：3% ≤ 5% ✓

結果：符合

⚠️ 注意： 符合 ISO 2954 是根據 ISO 10816 / ISO 20816 進行振動嚴重度測量的最低要求。現代分析儀通常顯著超出這些規格。

ISO 2954 振動儀器等級驗證 | Vibromera

符合性檢查

ISO 2954 關鍵要求

頻率響應要求

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