2-Pt. Acoustical Calibrator - Class 1

For calibration of all Sper Scientific digital sound meters and any sound meter with a 1⁄2 microphone. The 850012 Sound Level Calibrator is used to calibrate the sensitivity of the microphone and sound level measuring equipment. The design is based on the feedback method to ensure a highly stable sound pressure level. This compact and ergonomic sound calibrator conforms to ANSI S1.40-1984 and IEC60942 2003 Class 1 standard, and is perfect for calibrating Type 1 sound level meters with 1/2 microphones. To use, simply place the calibrator onto the digital sound meter’s microphone, turn on the calibrator, and adjust the meter’s reading to either 94 or 114 dB. Operates at a frequency of 1KHz ±1% with an accuracy of ±0.3 dB for 94 dB and ±0.5 dB for 114 dB levels, and features a built-in battery indicator. Small and light, it is easily portable for field use. Standard sound level settings at 94dB and 114dB Low battery indicator Harmonic wave distortion of ±3%. Output feedback detection Works with the following Sper Scientific class 1 sound meters: Type 1 Sound Meter Comes with a carrying case, instructions and 9V battery. Specifications Standard IEC 609422003 and ANSI S1.40. 1984 Sound Pressure Levels 94 and 114 dB reference of 2x10-5Pa Accuracy 94 ± 0.3 dB and 114 ± 0.5dB Frequency 1000Hz ± 1%. Distortion ≤ 3 % Dimensions 2.5 x 5.25 Weight 12.35 oz. including 9V battery Stable Times 20s. Humidity 90% Atmospheric Pressure 65KPa100KPa Downloads Instruction Manual