Hong Kong Hima AR844A Wall Mounted Noise Meter

NegotiableUpdate on 03/02

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Nature of the Manufacturer: Producers

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Overview

Hong Kong Hima AR844A Wall Mounted Noise 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

microphone	condenser microphone
measuring range	30~130dB
Measurement accuracy	±1.5dB
frequency response	31.5HZ~8.5KHZ
frequency weighting	Rights A and C
resolution	0.1dB
Dynamics	FAST and SLOW
Alarm method	Built in buzzer
AC\DCsignal output	Yes, there is
operation temperature	0～40℃（10～80%RH）
storage temperature	-10～60℃（10～70%RH）
Time weighted	have
Maximum/minimum value locking	Yes, there is
Alarm value setting	Customizable settings

Packaging specifications

power supply	USB DC 5V 1A
Net weight	220g
Product size	220X120.9X36.7mm
Packaging method	color box