AS854數(shù)字聲級(jí)計(jì) AS854數(shù)字聲級(jí)計(jì)Digital sound level meter

Product features

Sound level meter is also called (noise) is the basicinstrument in measuring noise. In general by thecondenser microphone, amplifier, attenuator, amplifier,frequency sound level meter power network and effective value indicator. Principle of sound level meter is: a microphone for converting sound into electrical signals,and then by the preamplifier transform impedancematching, the microphone and attenuator. Amplifier output signal to the weighting network, the signalfrequency weighting (or the external filter), and then by the attenuator and amplifier to amplify the signalamplitude, and finally through digital processor, display the corresponding value in the LCD.

Technical parameters

Sensor

1/2 inch capacitive microphone

Measuring range

30~130dB

Accuracy of measurement

± 1.5dB

Frequency response

31.5HZ~8.5KHZ

Frequency weighting

A/C

Data communication

USB

Data analysis

Off-line

Data storage

1000 pen

AC\DC signal output

Yes

Low power tips

Yes

Overload tips

Yes

Resolution

0.1dB

Dynamic characteristic selection

Fast/Slow

The maximum locking

Yes

Packaging specifications

Power Supply

9V battery

Net weight of the product

225g

Product size

221*66*33mm

Manner of packing

The color box packaging

Standard external tank capacity

40pcs

Standard carton size

52.5*40.0*49.0cm

Standard carton gross weight

12.5kg

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