Catalog
GRAS 40SC CCP Probe Microphone
The CCP Probe Microphone 40SC is a small, constant-current powered, compact unit for sound-pressure measurements in small enclosures, in harsh environments and in very close proximity to sound sources. The high acoustic input impedance at the tip of the probe minimizes its influence on the acoustic ..
GRAS 41AC-3 CCP Outdoor Microphone for Community & Airport Noise
The 41AC-3 is a SysCheck2™ enabled outdoor microphone for unattended use for prolonged periods of time. It can be used for community noise applications or for monitoring of overhead aircraft noise...
GRAS 41AC-4 LEMO Outdoor Microphone for Community and Airport Noise (0 V pol.)
The 41AC-4 is an outdoor microphone for unattended use for a prolonged period of time. It can be used for community noise applications or for monitoring of overhead aircraft noise...
GRAS 41AM Permanent Outdoor Microphone System for airport noise
The GRAS 41AM Outdoor Microphone System is for outdoor use whenever trouble-free acoustic measurements and, in particular, noise monitoring around airports are required...
GRAS 41CN Permanent Outdoor Microphone System for community noise
GRAS 41CN Permanent Outdoor Microphone System for community noise..
GRAS 42AA Pistonphone, Class 1
The GRAS Pistonphone 42AA is a battery-operated, precision sound source for accurate and reliable calibration of measurement microphones, sound level meters, and other sound measuring equipment...
GRAS 42AC Pistonphone, high pressure, Class 1
The GRAS 42AC Pistonphone, high pressure is a precision sound source for calibrating microphones. It is battery operated and produces a constant sound pressure level of 134 dB re. 20µPa (equivalent to 100 Pa) at 250 Hz, or 125.4 dBA re. 20µPa. ..
GRAS 42AE Low Frequency Calibrator
The GRAS 42AE Low-Frequency Calibrator permits microphone calibration at frequencies down to 0.01 Hz for both front and rear-vented microphones. It produces a constant sound pressure level down to very low frequencies...
GRAS 42AG Multifunction Sound Calibrator, Class 1
The GRAS 42AG Multifunction Sound Calibrator is a portable, battery-operated precision microphone calibrator. The calibrator can be used directly on 1" microphones. Adapters for calibrating 1/2" (factory mounted), 1/4" and 1/8" microphones are included...
GRAS 42AP Intelligent Pistonphone Class 0
The GRAS 42AP Pistonphone is a battery-operated, precision sound source for accurate and reliable calibration of measurement microphones, sound level meters and other sound measuring equipment...
GRAS 43AA Ear Simulator Kit According to IEC 60318-1 & -2
The GRAS 43AA Ear Simulator Kit is a complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 60318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, objecti..
GRAS 43AA-S2 CCP Ear Simulator Kit According to IEC 60318-1 & -2
The GRAS 43AA-S2 CCP Ear Simulator Kit with TEDSis a complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 60318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission ..
