振幅检查是决定设备尽管不断累积了灰尘，但它是否适合在下一个校准期进行不间断地测量的工具。随着时间的推移，流量传感器上的灰尘减少了超声波信号的幅度。这种幅度的减少由仪表中所控制的增幅来进行弥补。如果增幅超过了一定的阀值，该设备将在数据电报中输出F0预警信息（参见第5.4节）以显示必须采取行动广州翻译。

Amplitude check is a tool for deciding whether a device is suitable to measure throughout the next calibration period without interruption despite continuing accumulation of dirt. The dirt on the flow sensors reduces the ultrasonic signal amplitude over time. This amplitude reduction is compensated for by controlled amplification in the meter. If the amplification is above a certain threshold, the device will output a F0 prewarning in the data telegrams (see Section 5.4) to indicate that action must be taken.

如果需要更多的增幅，最终达到了临界阀值，F0将会被输出，因为不可能再进行可靠和正确的测量（在公差带中的错误）了。如果在达到两个阀值（F0预警和F0）之前有足够长的距离，仪表将有足够的测量储备。这就是振幅检查所确认的北京翻译公司。

If even more amplification is required, eventually reaching a critical threshold, F0 is output because reliable and correct measurement (error within a tolerance band) is no longer possible. Aeter has enough measurement reserves if the distance before reaching the two thresholds (F0 prewarning and F0) is large enough.