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AR844 noise meter, noise measuring instrument, sound level meter
The working principle of the AR844 noise meter is: the sound is converted into an electrical signal by the microphone, and then the impedance is trans
Product details
Detailed Introduction
The AR844 noise meter is the most fundamental instrument in noise measurement. A sound level meter generally consists of a condenser microphone, preamplifier, attenuator, amplifier, frequency weighting network, and effective value indicator head. The working principle of a sound level meter is that the sound is converted into an electrical signal by a microphone, and then the impedance is transformed by a preamplifier to match the microphone with an attenuator. The amplifier adds the output signal to the weighting network, performs frequency weighting on the signal (or an external filter), and then amplifies the signal to a certain amplitude through an attenuator and amplifier. After processing by a digital circuit processor, the corresponding value is displayed on the LCD.
Technical Parameter |
|
sensor |
1/2-inch condenser microphone |
measuring range |
30~130dB |
Measurement degree |
±1.5dB |
frequency response |
31.5HZ~8.5KHZ |
frequency weighting |
A/C |
data communication |
USB |
data analysis |
Online/Offline |
Data Storage |
4700 pens |
ACDC signal output |
have |
Low power warning |
have |
Overload warning |
have |
resolution |
0.1dB |
Time weighting |
Fast/Slow |
Zui maximum value lock |
have |
Packaging specifications |
|
power supply |
AA * 4 battery (with external power socket) |
Net weight |
300g |
Product size |
183*67*30mm |
Packaging method |
color box |
Standard outer box capacity |
12pcs |
Standard outer box size |
52.5*45.5*34cm |
Gross weight of standard outer box |
13kg |
|
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