0 - 50 dB microphone 40LS

50 - 100 dB100 - 150 dB150 - 200 dB

Automotive industry Wind-induced noise measurement on vehicles Outdoor measurements on testing grounds Wind-tunnel testing Design Just 2.5 mm thick, the 40LS has an integrated CCP preamplifier and is delivered with a built-in TEDS chip, which enables it to be programmed as a complete unit. The 40LS requires a constant-current power supply, such as the GRAS 12AL CCP Supply, or any other CCP compatible power supply. Close manufacturing tolerances together with the advantages of the TEDS chip, provide the 40LS with a high degree of interchangeability; a major advantage which excludes accounting for individual characteristics. The 40LS is both very stable and robust. It has an integrated 1.5 m co-axial cable with a microdot connector and is delivered with a supple detachable silicon-rubber fairing. Because of its lightness, the microphone with fairing can readily be mounted on surfaces using double-sided adhesive tape. All GRAS microphones are individually checked and calibrated before leaving the factory. An individual calibration chart is supplied with each microphone. Calibration When leaving the factory, all GRAS microphones have been calibrated in a controlled laboratory environment using traceable calibration equipment. Depending on the use, measurement environment and internal quality control programs we recommend that the microphone is recalibrated at least once a year. We offer two kinds of calibration as an optional after-sales service: GRAS Traceable Calibration and GRAS Accredited Calibration.