Low Frequency Sound Level Meter NA-18A (Rion) Rental

basic information

Product Code: 20263 *When making inquiries, it would be smooth if you could provide this number.* ***Features*** It has G characteristics in frequency correction characteristics and is equipped with real-time analysis functionality for 1/3 octave. Simultaneous measurement of low-frequency sound pressure level (1-100Hz), G characteristic sound pressure level, and 1/3 octave band level. The G characteristic frequency correction circuit, RMS detection circuit, and 1/3 octave band filter utilize digital computation by DSP, improving reliability. AC output for data recorders (1-500Hz) and AC output for level recorders (selectable from low-frequency sound pressure level <1-100Hz>, G characteristic sound pressure level, or 1/3 octave band level). With serial communication functionality, data can be easily imported to a computer, allowing for data editing with commercially available spreadsheet software.

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Applications/Examples of results

The evaluation characteristics of psychological and physiological effects caused by ultra-low frequency sound were standardized as G characteristics in ISO 7196 in March 1995. Generally, it is said that when the sound pressure level of G characteristics exceeds approximately 90 dB, low-frequency sounds are perceived, and at even higher levels, physiological effects (such as sleep disturbances, shortness of breath, and blood pressure changes) are reported.