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Hong Kong Hima AR854 Sound Level Meter
Hong Kong Hima AR854 Sound Level Meter
Product details
A sound level meter, also known as a noise meter, is the most basic 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 and performs frequency weighting on the signal（Or an external filter), then the signal is amplified to a certain amplitude through attenuators and amplifiers, and finally processed by a digital circuit processor to display the corresponding value on the LCD.
Technical Parameter
|
sensor |
Advanced condenser microphone |
|
measuring range |
30~130dB |
|
Measurement accuracy |
±1.5dB |
|
frequency response |
20HZ~8KHZ |
|
frequency weighting |
A |
|
data communication |
USB |
|
data analysis |
offline |
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Data Storage |
10000pen |
|
AC\\DCsignal output |
Yes, there is |
|
Low power warning |
Yes, there is |
|
Overload warning |
Yes, there is |
|
Number of digits andresolution |
3 and a half digits&0.1dB |
|
Time weighting |
Fast / Slow |
|
Maximum value locking |
have |
Packaging specifications
|
power supply |
4*1.5V AABattery or power adapter |
|
Net weight |
190g |
|
Product size |
215*82*34mm |
|
Packaging method |
color box |
|
Standard outer box capacity |
12pcs |
|
Standard outer box size |
52*33.5*47cm |
|
Gross weight of standard outer box |
12.5kg |
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