Sound Level Meter AR854

Sound Level Meter Type: AR854 Instrument: Sound Level Meter known (noise meter) is the most basic noise measurement instruments. Sound level generally consists of a condenser microphone, preamplifier, attenuators, amplifiers, frequency weighting network and RMS indication table top components. Sound Level Meter works: the microphone converts sound into electrical signals, and then by the pre-amplifier impedance conversion so that the microphone attenuator match. Amplifier output signal to weighting network, the signal frequency weighting (or external filter), and then by the attenuator and amplifier amplifies the signal to a certain magnitude, and finally through the digital circuit processor later, LCD the corresponding value on the display. Advanced technical parameters condenser microphone sensor measuring range 30 ~ 130dB Measurement Accuracy ± 1.5dB Frequency Response 20HZ ~ 8.5KHZ frequency weighting A / C data communications USB data analysis offline data storage 10000 T AC \\ DC signal output and low battery indication there Overload suggesting Resolution 0.1dB Time weighting Fast / Slow maximum locking packaged Specifications Power AA * 4 batteries (with external power receptacle) Product Weight 300g Product Size 210 * 72 * 32mm Package Boxed Standard Carton capacity 12pcs Standard Carton Size 52.5 * 45.5 * 34cm Standard Carton Gross Weight 13kg