Product Description
Smart Sensor AS824 Digital Noise Meter with Calibration Certificate
Sound level meter, also known as (noise meter) is the most basic instrument in noise measurement. A sound level meter is generally composed of a condenser microphone, a preamplifier, an attenuator, an amplifier, a frequency weighting network, and an effective value indicating meter. The working principle of the sound level meter is: the microphone converts the sound into an electrical signal, and then the preamplifier transforms the impedance to match the microphone with the 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 the attenuator and the amplifier, and finally after being processed by the digital circuit processor, it is displayed on the LCD The corresponding value is displayed on the
Specifications Smart Sensor AS824 Digital Noise Meter:
|
Microphone |
1/2 inch Condenser Microphone |
|
Measuring Leve |
30~130 dBA 35~130 dBC |
|
Accuracy |
±1.5dB |
|
Frequency Range |
31.5HZ~8.5KHZ |
| Standard | According to IEC651 TYPE 2 & ANSIS1.4 TYPE 2 |
|
Frequency Weighting |
A & C |
|
Level Range Bar Graph |
√ |
|
Range Selection |
4 modes |
|
Range Over Indication |
√ |
|
Battery Indication |
√ |
|
Backlight Display |
√ |
|
Max & Min Hold Function |
√ |
|
Digit & Resolution |
4 digits & 0.1dB |
|
Time Weighting |
Fast / SLow |
|
Auto Power Off |
√ |
|
External power supply |
√ |
|
Sampling Frequency |
2 times / sec |
Packing Information:
|
Power |
9V battery |
|
Product Net Weight |
150g |
|
Product Size |
224*66*33mm |
Smart Sensor AS824 – Datasheet
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