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Metrix+

SL 4001

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SL 4001 Digital Sound Level Meter is a robust, user-friendly noise measurement tool featuring a wide 30-130dBA range, a color negative display with an analog bar graph, and Type C rechargeable power, making it ideal for fast, accurate ambient noise monitoring and OSHA compliance checks.

Features:

  • Color screen with negative display for better readability
  • Ambient temperature and humidity measurement
  • Bar-graph display
  • Max/ min reading and data hold
  • Time weighting level selection.
  • Type C charging
  • English and Hindi Manual
  • Type Digital Sound Level Meter
Rs. 4,248.00 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

Metrix+ SL 4001

Microphone

6mm condenser microphone

Measuring range

30 ~ 130dB (A)

Accuracy

±1.5dB(sound pressure std, 94dB @ 1KHz)

Frequency range

31.5 Hz ~ 8.5 kHz

Dynamic range

3.50dB

Overload Indication

"OVER" and "UNDER" symbols indication

Frequency weighting

A

Digital display

4-digit, resolution 0.1dB, sampling rate 2 times/sec

Bar graph display

Each analog bar represents 1dB, sampling rate 20times/sec

Power

600Mah/3.7V lithium battery, Type C charging

Automatic power off

After 15mins of no activity

Standard accessories

Main unit, manual, charging cable; gift box packing

 

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.