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Digital noise meter AS824, handheld noise measuring instrument, sound level meter
The digital noise meter AS824 generally consists of a condenser microphone, preamplifier, attenuator, amplifier, frequency weighting network, and effe
Product details
detailed introduction
The digital noise meter AS824 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 Specifications |
|
sensor |
1/2-inch condenser microphone |
measurement range |
30~130dB |
Measurement degree |
±1.5dB |
frequency response |
31.5HZ~8.5KHZ |
Frequency weighting characteristic |
A/C |
data communication |
------ |
data analysis |
------ |
data storage |
------ |
ACDC signal output |
have |
Low battery alert |
have |
Overload warning |
have |
resolution |
0.1dB |
Dynamic feature selection |
Fast/Slow |
Zui maximum value lock |
have |
Packing Specification |
|
power supply |
9V battery |
Net weight |
225g |
Product dimensions |
221*66*33mm |
packaging method |
color box packaging |
Standard outer box capacity |
40pcs |
Standard outer box size |
52.5*40.0*49.0cm |
Gross weight of standard outer box |
12.5kg |
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