Sound Attenuated Pump is designed to prevent vandalism/theft. Sound attenuated pump has high quality ductile or cast iron volute with semi-open impeller that allows passage of large size solids. It has large fuel tanks for 24 hour operation. It operates quietly in various conditions. Its size varies from 6″-8″. It has ability to move large volumes of liquid. The noise level of sound attenuated pumps is as low as 67dba at 23'. This pump has ability to adjust to varying flows.
Sound level meter measures sound pressure level. It is commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft noise. However, the reading given by a sound level meter does not correlate well to human-perceived loudness; for this a loudness meter is needed.
Sound meters are used for the measurement of vibration as well as sound. These are used in many kinds of sound and noise analysis such as industrial safety, traffic and transportation noise quantification, and scientific noise measurement. These meters measure real-time sound and can have functions such as signal analysis, noise dose measurement, and different time and frequency weighting.