Overview
The AMITTARI AS-156A Sound Level Meter is a High Accuracy noise measuring instrument with 0.1dB resolution and +/- 2dB Precision. Together with the AS-156B (Precision +/- 1dB), this model forms the product family and is widely used in the fields of machine noise, vehicle noise, architectural acoustics, environment noise and electroacoustic measurement.
Features
1. With DC output of 10 mV/dB
2. Can store 30 sets of measurement data and measurement status
3. Three weighted "A"/"C"/"F" options and time weighted "fast and slow" options
4. Measurement parameters: Lp ordinary sound level measurement, Leq equivalent continuous A sound level measurement, Lmax maximum sound level measurement, LN statistical sound level measurement
5. Equipped with functions such as "alarm value setting", "output", "automatic shutdown and manual shutdown"
6. Use USB data cable output to communicate with PC
7. Provide Bluetooth data output selection
Principle
The sound level meter collects sound signals through a 12.5mm condenser microphone and makes measurements in the 20-8,000 Hz Frequency range. The instrument uses three Frequency weights ("A"/"C"/"F") and two Time weights (fast and slow) to process the sound signal. It can measure Lp, Leq, Lmax, LN four parameters, and ensure the measurement accuracy through the built-in calibrated signal (94dB, 1000Hz sinusoidal signal).
Applications
Machine noise, vehicle noise, building acoustics, environment noise, electroacoustic measurement
