Acoustical calibrator, 2 point

2 POINT ACOUSTICAL CALIBRATOR

For calibration of all Sper Scientific digital sound meters and any sound meter with 25mm or 12.5mm microphone. Conforms to ANSI S1.4-1984 and IEC942 1988 Class 2 standards for acoustical calibrators. Simply place the calibrator on to 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 ±4% and with an accuracy of ±0.5 dB. Built in battery check. Easily portable for field use, it comes with a carrying case, adaptors for 25mm and 12.5mm microphones, instructions and a 9 volt battery.
Dimensions: 125 x 48mm
Weight: 285g