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Help Center31.5Hz - 8.5KHz Portable Decibel Meter , Digital Noise Meter With Response
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31.5Hz - 8.5KHz Portable Decibel Meter , Digital Noise Meter with Response
Quik details
Measuring Level : 30~130dBA , 35~130dBC
Power : Electronic
Usage :sound test
Resolution : 0.1dB
Accuracy : ±1.5 dB
Frequency Range : 31.5 Hz to 8.5k Kz
Linearity Range : 50dB
Description
The method of usage
1. Remove the battery cover on the back and put in four 1.5V 7＃ battery.
Close the battery cover.
2. Press the power switch(ON/OFF), into the automatic measuring state, liquid
crystal display F (fast response), instrument according to the sound level
automatic changing the measurement range, the range of liquid crystal at the
top of the indicator will change along with the gear change. Analog and digital
indicating measurements to the live sound size. If the liquid crystal display \"UNDER\"
or \"OVER\" symbol, show that the voice is lower than 30dB or higher than the amount
of 130dB.
3. Press the F/S key, convertible sound level meter response speed, F, S . Press the
MAX key, can display the maximum sound level since boot. Press the HOLD key to
keepthe measurement of sound level number. Press the LIGHT key,Light / out
backgroundlight, background light 15 seconds will be automatically extinguished.
4. The key to open in the boot state press the power (ON/OFF), the instrument will
immediately shut down.
5. Automatic shutdown: when 15 minutes to stop button, the instrument will
automatically shut down, to save power.
6 . Continuous working mode: when the need for continuous measurement, first press
the MAX key before the start, at the same time, press ON/OFF, the display flashes
\"COU\" symbol, this boot will work continuously, will not automatically shut down.
7． Low power indication: when the battery voltage is reduced to a certain degree, the
screen lit battery symbol, that the battery should be replaced.
Specifications
|
Function |
digital sound level meter |
|
Measuring Range |
30-130db |
|
Accuracy |
1.5db |
|
Frequency range |
31.5Hz-8KHz |
|
Linearity range |
50db |
|
Resolution |
0.1db |
|
Microphone |
1/2 inch Condenser Microphone |
|
Frequency weighting selection |
A&C |
|
Dynamic performance selection |
Fast / slow |
|
Max data hold |
Yes |
|
Auto level transition |
Yes |
|
Backlight |
Yes |
|
Low battery display |
Yes |
|
Battery type |
9V |
Application
This device is a portable, easy to use and handy instrument for sound quality control in office, home, school, traffic, audio system and construction site. The meter has wide range of applications such as noise pollution studies, research and other industrial use.
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