RS-232 Sound Level Meter Digital Decibel Reader

Multi-functional Digital Sound/Noise Level Meter w/ RS-232 Interface

This noise measuring meter 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.

Features:

• Designed according to following standards:
  a. International Electrician Committee Standard: IEC 651 TYPE 2
  b. US National Standard: ANSI 1.4 TYPE 2
• With Alarm Set And Alarm Output
• Widely Used to Test The Sound Level of Environment , Machine, Vehicle, Ship And Other Noise
• 4 Measurement Parameters:
  Lp: Current Sound Pressure Level
  Leq: Equivalent Continuous A Sound Pressure Level, i.e. Arithmetically Mean Value in A Period of time Set.
  L N: Statistic Analysis, i.e. What Percent of All Measurement Values are Larger than or Equal to the Alarm Value Set by the User. For Setting The Alarm Value.
• A / C / Flat Frequency Weighting
  a. With 'A' Weighting Selected , The Frequency Response of The Meter Is Similar to The Response of The Human Ear. 'A' Weighting Is Commonly Used for Environmental or Hearing Conservation Programs Such As OSHA Regulatory Testing And Noise Ordinance Law.
  b. 'C' Weighting Is A Much Flatter Response And Is Suitable for The Sound Level Analysis of Machines, Engines,etc.
• Fast (High Speed) Rate to Pick Up the Current Reading
• Slow (Low Speed) Rate to Pick Up the Reading of Average within 1 Second
• Auto Range Selection And Digital Display with No Guessing Errors
• Manual or Automatic Shut Down. The Tester Can Be Switched Off by Pressing The Power Key at Any Time. On The Other Hand, The Tester Can Be Set to Auto Power Off Between 1 to 9 Minutes or disable Auto Power Off
• The Tester Can Memorize 30 Groups of Measurement Results And Measuring Conditions For Later Use or Download to Computer
• Can Connect to Computer for Statistic, Printing And Analyzing by The Optional Cable And The Software For RS232C Interface
• AC and DC Analogy Signal Output are Available connecting to Frequency Analyzer Level Recorder, FFT Analyzer And Graphic Recorder etc. for Data Statistical Analysis

Specifications:

Operating Voltage

Display	14mm (0.55") LCD with backlight
Accuracy	+/-1dB
Resolution	0.1dB
Memory	30 Groups with Measuring Conditions
Built-in Calibration Signals	94dB at 1kHz (Sinusoidal)
Frequency Range	20.0 to 12,500Hz
Frequency Weighting Characteristic	A, C and F (Flat)
Alarm Value Set	30-130dB
Alarm Output	LED and Optional Relay Contact (NC)
PC Interface	RS232C
Power Supply	4x 1.5v AAA (UM-4 Battery)
External DC Power Supply	6V DC, 100mA
Time Weighting	FAST (125ms)/SLOW (1second)
Size	236 x 63 x 26 (mm)/ 9.3" x 2.5" x 1.0"
Weight	170g
Auto Power Off Function	Yes
Microphone	1/2" Electret Condenser Type
Low Battery Indication	Yes
Parameters Measured: Lp, Lmax, Leq, L N
Lp	30-130dB (A), 35-130dB (C), 40-130dB (F)
Leq	30-130dB (10s, 1min, 5min, 10min, 15min, 30min, 1hour, 8hours, 24hours)
L N	0-100%

Standard Package Includes:

• 1x Sound Level Meter
• 1x Sponge Ball
• 1x Operation Manual
• 1x Plastic Carrying Case

Please kindly know that batteries and the RS232C cable is not included. Thank you.