บริษัท เลกะ คอร์ปอเรชั่น จำกัด เราคือผู้นำด้านเครื่องมือวัดทุกชนิด

📱 LINE ID : @lega

Sound Level Meters

Sound Level Meters

Sound Level Meters can be divide into two classes, with same functionality, but different tolerances for error. Class 1 and Class 2 are applies IEC 61672-1:2002 standard.

Class 1 Class 2
Frequency Tolerances Frequency Tolerances
1 kHz ± 1.1dB 1 kHz ± 1.4dB
20 kHz ± 2.5dB 20 kHz ± 3.5dB
16 Hz ± 2.5dB, -4.5dB 16 Hz ± 5.5dB, -∞ dB

How to choose Sound Level Meters? As table above the tolerances of Class 1 has narrow range than Class 2. Class 1 is suitable for measure sound level that needs high accurate such as ISO 20906:2009 for sound measurement of airport. Class 2 is suitable for measure general sound level. Therefore, should be purchased by works type.

Sound Level Meters Sound Calibrators Noise Dose Meters Sound Scope Accessories for Sound Meter