30 - 130 dB USB Digital Decibel Sound Level Meter

This Multi-functional Digital Sound/Noise Level Meter w/ USB Interface is 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, family and all other noise measurement applications.

You can record the sound and send the synchronized data/time easily through USB to your computer. Furthermore, with the helpful software included in the item, you can find out the result of the research in minutes from the conspicuous information form. Multi Value added tripod fixed screw aperture for support setting can facilitate long time recording.

Features:

• Designed according to following standards:
  a. International Electrician Committee Standard: IEC PUB 651 TYPE 2
  b. US National Standard: ANSI S1.4 TYPE 2
• Accuracy: up to +/- 1.5dB
• Windscreen for Filter-out Unwanted Signals
• Wild Measurement Range: 30-130dB. 5 Measurement Levels for More Precise Result
• Fast (High Speed) Rate to Pick Up the Current Reading
• Slow (Low Speed) Rate to Pick Up the Reading of Average within 1 Second
• A-Weighting for General Sound Level Measurements
• C-Weighting for Checking the Low-frequency Content of Sounds
• Maximum Value Holding Function to Lock up the Maximum Reading
• Auto Power Off Design for Energy Saving
• Calendar Function to Record the Reading Date and Time
• High 4700 Data Record Capability for Long Time Recording
• USB Interface Is Configured to Connect to The Computer for Statistic, Printing And Analyzing by The USB Cable And The Software
• Functions of Data Record Downloading, Real Time Data Sampling Analysis, and Printing Graph & Data etc.
• Both AC and DC Analogy Signal Output are Available connecting to Frequency Analyzer or X-Y Axis Recorder for Data Statistical Analysis

Specifications:

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	30-80, 50-100, 60-110, 80-130, 30-130
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	20 times/second
AC Signal Output	4Vrms/ full bar graph, output impedance is about 600 ohm
PWM Signal Output	Duty cycle=0.01 x db value/3.3 x 100%
Dynamic Characteristic	FAST (high speed)/SLOW (low speed)
Calendar Accuracy	+/-30seconds/day
Data Storage Quantity	4700
The Maximum Value Holding	MAX
Auto Power Off	Yes (after no operation for 10 minutes)
Microphone	1/2" polarization capacitance microphone
Operating Voltage	6V
External Dimensions	67 x 30 x 183 (mm)
Net Weight	147.5g (not includes battery)
Battery Life	20Hours (continuous use)

Package Includes:

• 1x Sound Level Meter
• 1x Sponge Ball
• 1x Computer Software Disc
• 1x USB Connection Cable
• 1x AC output wire
• 4x 1.5V Battery (AA)
• 1x Operation Manual
• 1x Black Carrying Case