USB decible Level Meter - MS1356

Digital Sound Level Meter 30~130 dB Decibel with USB Interface

A. Brief Description

This Professional Digital Sound Level Meter is an instrument to measure Sound Pressure Level in decibels (dB). Unlike with traditional Sound Level Meter, this unit can be used as Data Logger to record and download Noise Data into PC through USB interface. It has Real-Time Data Sampling Analysis and record up to 43690 Noise Data. These recorded data can be plotted in Graph.

The device is featured with wide measuring range (30 ~ 130 dB), Bar-Graph Indication, A/C frequency weighting, Fast / Slow response and Maximum Hold function. The meter also provides a windscreen to filter-out unwanted signals. Moreover, it has Date and Time function. The DC power can be provided by USB cable when connecting to PC.

This device is a portable, easy to use and handy instrument for sound quality control in office, home, school and construction site. The meter has wide range of applications such as noise pollution studies, research and other industrial use.

B.Features

• Able to connect to PC with USB
• Able to record 43690 Noise Data (Special user may expand to 131070)
• Recording and Downloading Noise Data (can be saved in Excel and TXT format)
• Real-Time Data Sampling Analysis
• Plotted Graph and Recorded Data are Printable
• DC power can be provided by USB cable when connecting to PC (No Battery required)
• Conformed to the IEC 651 Type 2 and ANSI S1.4 Type 2 set standard
• High Accuracy up to ±1.5 dB
• Wide Measuring Range: 30 ~ 130 dB
• With 2 equivalent weighted sound pressure levels A and C
• High and Low speed rate selection
• Maximum value hold function
• OVER and UNDER Alarm symbol appeared when the reading is over and under the Maximum or Minimum Range
• Automatic power off if no operations for 10 minutes
• AC and DC signed output for frequency analyzer level recorder, FFT analyzer and graphic recorder, or X-Y axis recorder for data statistical analysis
• Equipped with windscreen to filter noise or unwanted signal
• Bar graph indication for Sound Level Range
• Calendar and Time Display
• Date and Time can be Synchronized to Date and Time of User's PC
• Large LCD screen with 4 digits reading
• With tripod Mounting Screw on the back of the unit for field use
• Tested and Compatible with Windows XP (32 Bit) / 2000 / ME / 98 (Have not yet tested with Windows Vista, Windows 7 and Mac OS, please don't bid if your Operation System is listed as above)

C. Specifications

• LCD display: 4 digits
• LCD size: 2.2 inch (55 mm)
• Display: 0.5 secretary
• Measuring Level: 30 ~ 130 dB(A) (A-weighted decibels), 35 ~ 130 dB(C) (C-weighted decibels)
• Accuracy: ±1.5 dB
• Frequency Response: 31.5 Hz ~ 8.5 kHz
• Resolution: 0.1 dB
• Sound Level: 30 ~ 130 dB with Level selecting button switches
  • Level 1: 30 ~ 80 dB
  • Level 2: 40 ~ 90 dB
  • Level 3: 50 ~ 100 dB
  • Level 4: 60 ~ 110 dB
  • Level 5: 70 ~ 120 dB
  • Level 6: 80 ~ 130 dB
  • Level 7: 30 ~ 130 dB
• Dynamic Range: 50 dB / 100 dB
• Overload indication: Use the symbol OVER and UNDER for indication
• Frequency Weighting Characteristic: A, C
• Analog Bar graph: 1 dB / 1 bar graph
• Sampling rate: 20 times / second
• AC output: 0.707 Vrms at Full Scale output impedance approx. 600 Ω
• DC output: 10 mV / dB output impedance approx. 100 Ω
• Dynamic Characteristic (Time weighting): FAST (high speed) / SLOW (low speed)
• Calendar Accuracy: ±30 seconds / day
• Data storage quantity: 43690 (special user may expand to 131070)
• The maximum value holding: MAX
• Auto power off: after no operation for 10 minutes
• Microphone: ½ inch electret condenser microphone
• Power Supply: 9 V (6F22) Battery (included) or using 9 V DC Adapter
• Power life: about 20 hours (alkaline battery) for continuous use
• Operating Temperature: 0 ~ 40 °C (32 ~ 104 °F)
• Operating Humidity: 10 ~ 70 % R.H.
• Storage Temperature: -10 ~ 50 °C (14 ~ 122 °F)
• Storage Humidity: 10 ~ 80 % R.H.
• Dimensions: approx. 235 (L) x 70 (W) x 30 (H) mm (9.25' x 2.76' x 1.18' inch)
• Weight: approx. 350 g

E,One Set Included

• 1 x Professional Sound Level Meter
• 1 x Sponge Ball or Windscreen
• 1 x USB connection cable
• 1 x Software CD
• 1 x 9 V 6F22 Battery
• 1 x Instruction Manual
• Standard factory package