Thiết bị chuẩn độ ồn 2124A ACO
TYPE 2124A is a standard sound source, which emits 124dB-SPL pure sine tone at 250Hz for calibration of sound level meter.This is used for precise calibration of sound level meter provided with 1-inch, 1/2-inch and 1/4-inch condenser microphones.
Thông số kỹ thuật
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