Sound calibrator type 4231 manuals

In this case the CR515 Calibrator is the most suitable choice. This calibrator operates at 94 dB, which is the default calibration level for most sound level meters. For occupational noise assessments you would usually be using a Type 2 meter, so one of the Class 2 calibrators is the correct choice. TYPE 2239A Type 2239A is a Class 1 sound level meter that is designed to be quick and easy to use when making environmental and occupational noise measurements. A large LCD screen displays measurements and includes a quasi-analog bar showing the current sound pressure level. The clearly marked arrows and symbols on the front panel, Atec Bruel-Kjaer-2250-2270 User Manual Page 20. CALIBRATION Type 4231. Sound Calibrator (fits in KE-0440) Type 4226. Multifunction Acoustic Calibrator. Type 4228. Pistonphone. MEASURING Type 3535-A. All-weather Case (see Product Data BP 2251) AO-0440-D-015. The Sound Calibrator Type 4231 is a handy and portable device for calibration of sound level meters and other sound measurement equipment. Its battery-operated and pocket-sized design features a high stable level and frequency with calibration accuracy of ± 0.2 dB. Type 2237A Integrating Sound Level Meter Includes the following accessories: Type 4137: Prepolarized Free-field 1/2? Microphone KE0323: Shoulder Bag UA1236: Protective Cover 4 ? QB0013: 1.5V LR6/AA alkaline cells Optional Accessories Type 4231:Sound Level Calibrator Type 4226:Multifunction Acoustic Calibrator Type 2322:Portable Printer Calibration of Sound & Vibration Instruments Certificate Number: N/A Note: This calibration report shall not be reproduced, except in full, without written consent of Odin Metrology, Inc. Page 1 of 2 Certificate of Calibration for Calibrator type 4231 Serial no. 1770857 Calibration accuracy ±0.2dB, 94dB SPL or 114dB SPL for calibration in noisy environments, Fits Bruel & Kjaer 1" and 1/2" microphones (1/4" and 1/8"with adapter). Sound Calibrator Type 4231 is a pocket-sized, b