活塞发生器
4228型活塞发生器设计用于声级计和传声器校准，非常适合在宽泛的温度、湿度和压力范围内进行现场校准，同时保持高精度。
4228 型
4228型活塞式校准器可对传声器和声级计等声音测量设备进行快速、准确的校准。
借助所包含的气压计，它满足 IEC 942（1988）1L 级，而借助外部气压计，它能够满足 IEC 942（1988）0L 级。它还满足 ANSI S1.40-1984。它可以在广泛的温度、湿度和压力范围内使用，同时仍能保持高精度。它对于提供标准声压级非常有用。
| Pistonphone - Type 4228 | 數據表 | English |
| Pistonphone Type 4228 | 數據表 | Chinese |
| Pistonphone Type 4228 | 操作說明 | English |
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
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