Class 1 and Class 2 with Type Approval
Cirrus manufactures a range of Acoustic Calibrators and adaptors suitable for the field calibration of sound level meters, noise dosimeters and other noise measurement instruments.
The current range of Acoustic Calibrators comprises:
CR:514 Class 2 & CR:515 Class 1 Acoustic Calibrators
The CR:514 and CR:515 are high performance acoustic calibrators designed for the field and laboratory calibration of sound level meters and other noise measurement equipment.
The units are simple to operate and meet the requirements of the latest IEC 60942:2003 standard for Acoustic Calibrators with performance to Class 2 (CR:514) and Class 1 (CR:515).
The CR:515 and CR:514 are the standard Acoustic Calibrators are supplied with the Cirrus Sound Level Meters and Noise Measurement Instruments.
CR:511F Acoustic Calibrator
The CR:511F Acoustic Calibrator meets the requirements of IEC 60942:1998 for a Class 1L instrument.
It provides 94dB and 104dB sound pressure levels and can be used with a range of calibration adaptors to suit microphone capsules other than 1/2" and 1" diameter.