Pistonphone NC-72B
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Calibrator
Pistonphone
NC-72B
Sound Calibrator
NC-75
Calibration Exciter
VE-10
Vibration Calibrator
VP-33A
Pistonphone
NC-72B
A standard Sound source that Generates a constant sound pressure of 114 dB at 250Hz
* Conforms to IEC 60942 : 2017 class LS/M and class 1/M
* Supports exact frequencies (251.19 Hz)＊
＊Exact frequencies have been adopted due to revisions to certification and inspection regulations of the Measurement Act of 2015.
* Allows calibration with precision of ±0.10 dB
* Can also be powered by NiMH batteries
* Usable as a standard sound source in laboratories or as a calibration sound source for sound level meters on site.
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