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Sound Meters

Extech Instruments

Sound Meters
Sound Meters
A sound meter, or sound level meter, is a handheld instrument equipped with a microphone that measures ambient noise in an environment. Sound is converted into a voltage value by the device, and noise quantity is reported in decibels.

Sound meters are generally used for safety purposes. Occupational noise exposure is standardized by OSHA, and if personnel are exposed to sound exceeding certain thresholds, protective measures or engineering solutions are expected to mitigate exposure.

Sound meters measure the sound level in an environment, and can keep track of minimum and maximum values, respond rapidly or over time, and report with a large degree of accuracy. The measurements are then used to guide adjustments made to the environment, or notify personnel that protective equipment is required.

407730 Series Image
  • ±2dB Accuracy with 0.1dB Resolution
  • A&C Weighting
  • AC Analog Output
  • Record Max/Min Values Over Time
  • Auto Power Off and Max Hold Functions
  • Utilizes 0.5" (12.7mm) Condenser Microphone
  • Tripod Mountable
  • 40 to 130dB Measuring Range
  • Fast/Slow Response Time
  • Tripod Mountable
  • Complete with 4 AAA Batteries and Microphone Windscreen
  • A and C Weighting
  • High and Low Measuring Ranges: Low (35 to 100dB), High (65 to 130dB)
  • 0.1dB Resolution
  • Fast/Slow Response
  • Max Hold with Reset Button
  • Large 0.5" 3-1/2 Digit LCD Display
  • Built-in Calibration Check (94dB)
  • Tripod Mount and Analog DC/AC Conditioned Outputs of 10mV/dB
  • Utilizes 0.49" (12.3mm) Condenser Microphone
  • Complete with Hard Vinyl Case and 9V Battery
407736 Series Image
  • A and C Weighting
  • High and Low Measuring Ranges: Low (35 to 90dB), High (75 to 130dB)
  • 0.1dB Resolution
  • Fast/Slow Response
  • Max Hold with Reset Button
  • Large 0.5" 3-1/2 Digit LCD Display
  • Built-in Calibration Check (94dB)
  • Tripod Mount and Analog DC/AC Conditioned Outputs of 10mV/dB
  • Utilizes 0.49" (12.3mm) Condenser Microphone
  • Complete with Hard Vinyl Case and 9V Battery
  • Meets ANSI and IEC 651 Type II Standards
407760 Series Image
  • USB Interface for Easy Setup and Data Download
  • 30 to 130dB Range
  • Datalogging Capability up to 129,920 Records
  • Selectable Data Sampling Rate
  • Records Readings with Real Time Clock
  • Two Start Methods: Programmed (from PC) or Manual
  • 0.5" Electret Microphone
  • Includes 3.6V Lithium Battery, Windows Compatible Software, USB Cover, Tripod, USB Extension Cable, and Windscreen
  • Autoranging over 6 Ranges from 30 to 130dB with High Accuracy to ±1.5dB and 0.1dB Resolution
  • Large LCD Display with Function Indication and Fast 50 Segment Bar Graph display
  • Time and Date are Logged with Data
  • Stored Data Can Be Easily Transferred to a PC via RS-232 Interface and Analyzed using Software & Cable Provided
  • A & C Weighting and Fast/Slow Response
  • Tripod Mount Provided on Rear
  • Max Hold Function
  • Meets ANSI S1.4 Type II and IEC 651 Standards
  • Internal Self Test when Powered ON
  • Detachable 0.52" (13.2mm) Diameter Condenser Microphone
  • Analog AC/DC Recorder Output 10mVDC/decibel
  • Complete with Microphone Wind Cover, Windows 95/98/NT/2000/ME/XP Compatible Software, Serial Cable, 4 AA Batteries, Microphone Windscreen, and Carrying Case
  • Three Ranges from 30 to 130dB
  • Datalogging Capability up to 20,000 Records
  • Capture up to 10 Readings/Sec when Connected to a PC
  • Records Readings with Real Data and Time Stamp
  • Min/Max and Data Hold Functions
  • Heavy Duty Rugged Double Molded Housing
  • USB Port Includes Software
  • Auto Power Off with Disable Capability
  • Includes Windows Compatible Software, USB Cable, Wind Cover, Tripod, Hard Carrying Case, AC Adaptor, and 9V Battery
SDL600 Series Image
  • High Accuracy ±1.4dB meets ANSI and IEC 61672-1 Type 2 Standards
  • 30 to 130dB Measurement Range
  • Auto or Manual Ranging
  • AC Analog Output for Connection to an Analyzer or Recorder
  • Large Backlit LCD Display
  • Stores 99 Readings Manually and 20M Readings via 2G SD Card
  • Records Readings with Real Date and Time Stamp
  • User Programmable Sampling Rate: 1 to 3600 Seconds
  • Min/Max and Data Hold Functions
  • Auto Power Off with Disable Function
  • Built-in PC Interface
  • Complete with 6 AA Batteries, SD Card, Wind Screen, and Hard Carrying Case
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