Máy đo tiếng ồn âm thanh Rion NC-72A

The Rion NC-72A Pistonphone complies with IEC 60942 Class LS/C and Class 1/C when used with a suitable barometer. It is a standard sound source intended for laboratory use with high accuracy and stability. This precision device is will work with standard half inch microphones as well as 1 inch and quarter inch microphones.

• IEC 60942 Class LS/C and 1/C Pistonphone (when used with a suitable barometer)
• 114 dB (± 0.2dB at 1 atmosphere) at 250 Hz (± 1%)
• Suitable for standard half inch, 1 inch and quarter inch microphones
• Supplied in hard case with barometer