SL 4005

Digital Sound Level meter with A, C & F weightings, upto 130dB measuring range and built in calibration mode.

Features:
  • Data storage 
  • Built in calibration mode 
  • A,C & F frequency weightings 
  • Measuring level and time level selection 


Applications:

Sound level meters are commonly used in noise pollution studies for the quantification of different kinds of noise, especially for industrial, environmental, mining  and aircraft noise. 


Measuring Principle:

Sound level meter measures the sound level in logarithmic scale. There is a diaphragm in the microphone which responds to changes in air pressure caused by sound waves. This sound pressure is converted into logarithmic scale and displayed.  

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  Â±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
Catalogue: Catalogue