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Benetech GM1356 Sound Level Meter

This unit has been designed to meet the measurement requirement of noise engineers, noise quality control and
health prevention in various environments, such as noise measurement in factory, office, traffic road, familyand all other noise measurement applications.

Weight	1 kg

Features

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Sound Level Meter possesses the following features:

1.This unit was designed according to following standards:

a. International electrician committee standard: IEC PUB 651 TYPE2

b. US national standard: ANSI S1.4 TYPE2

2.Accuracy up to +/-1.5dB

3.Measurement range is 30 to 130dB

4.Fast/Slow Time weigting selection

5.Automatic backlight

6.The maximum value holding function

7.Auto power off 10 minutes

8.A/C Frequency weighting selection

9.Both AC and PWM signal output are available

10.Calendar function

11.4700 data record function

12.Connect with the PC through USB, provides data record downloading,

real-time data sampling analysis, and printing graph&data functions.

Specifications

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Calibration sound source	94dB@1KHz
Measurement range	30~130dBA、35~130dBC
Accuracy	±1.5dB（reference sound pressure standard，94dB@1KHz）
Frequency response	31.5Hz~8.5KHz
Resolution	0.1dB
Measuring level	30 to 80 , 50 to 100, 60 to 110, 80 to 130, 30 to 130
Dynamic range	50dB/100dB
Overload indication	OVER / UNDER
Frequency weighting characteristic	A and C
Digital display	4 digits
Analogy bar graph	1dB/1 bar graph
Sampling rate	FAST:8times/second;SLOW:2times/second
AC signal output	4Vrms/ full bar graph, output impedance is about 600 ohm
PWM signal output	Duty cycle =0.01X db value/3.3 x 100%
Dyna mic cha racteristic	FAST(high speed)/SLOW(low speed)
Calendar accuracy	±30seconds/day
Data stor age quantity	4700
The m aximum value holding	MAX
Auto power off	10 minutes without operation
Micro phone	1/2inch polarization capacitance microphone
Power supply	6V (4PCS 1.5V Alkline battery)
Dimension	70x35x256mm
Weight	244G (Without battery)
Battery life	20h continuous use(Alkaline batteries)