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SL 4005

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SL 4005 Digital Sound Level Meter is a professional-grade noise measurement instrument capable of accurately reading sound levels up to 130dB with user-selectable A, C, and F frequency weightings and a built-in calibration mode, making it essential for workplace safety compliance and environmental noise monitoring.

Features:

  • Data storage 
  • Built in calibration mode 
  • A,C & F frequency weightings 
  • Measuring level and time level selection 
  • Backlit display
  • Type Digital Sound Level Meter
Rs. 6,372.00 incl. taxes
In stock
In stock

Ready to work out of the box!

All our meters are delivered with essential accessories and easy-to-follow instructional manual. Unbox and start measuring with confidence!

Warranty and returns?

All our meters come with 12 month warranty against manufacturing defects. Please read our returns and refund policy for more information.

Got Questions? Feel free to get in touch.

Technical Specifications:

Model  SL 4005
Microphone 1/2 inch electret condenser machine
Measuring range LP : 30 ~ 130dBA, 35 ~ 130dBC, 35 ~ 130dBF; Leq : 30 ~ 130dB; LN : 0 - 100%
Accuracy  ±1dB
Frequency range 20 Hz ~ 12.5 kHz
Calibration Built in 94dB at 1kHz(sinusoidal)
Alarm value set 30 ~ 130dB
Linearity range 50dB
Frequency weighting A, C & F(flat)
Resolution 0.1dB
Data storage 30 groups
Time weighting selection Fast / slow
Sampling frequency 2 times / sec
Power  1.5V AAA batteries
Size and weight 236 x 63 x 26mm, 170g
Standard accessories Main unit, manual, battery, hard carry case
Optional accessories PC interface

 

Applications:

Digital sound level meters are critical for workplace safety and regulatory compliance, used to accurately measure noise pollution and acoustic levels in industrial, residential, and environmental settings. Their primary applications include checking OSHA noise exposure limits, assessing machine noise for preventive maintenance, and testing sound levels for quality control.

 

Measuring Principle:

Digital sound level meters measure noise by using a sensitive condenser microphone to convert air pressure fluctuations (sound waves) into a proportional electrical signal. This signal is then processed digitally using standardized weighting filters (A, C, or Z) and time constants to accurately quantify the noise level in decibels (dB), which is essential for noise pollution control and OSHA compliance.