Noise at work experts since 1969 Model 103 & 104 Dual Level Acoustic Calibrators Compliant to IEC 60942:2017 standard for acoustic calibrators Ergonomic and robust design Auto correction for temperature and barometric pressure Auto switch-off in normal mode and ‘permanent-on’ mode available Switch between 94dB or 114dB at 1kHz Fits ½ inch international standard microphones ¼ inch microphone adapter available The Models 103 & 104 dual level acoustic calibrators allow you to quickly check the accuracy of your sound level meter or dosemeter thus complying with international regulations and codes of practice. In use they fit over the microphone of the instrument and produce a stable 1kHz tone at 94dB or 114dB, allowing you frequecy at the press of a button. The Model 103 meets the precision of Class 1 to IEC 60942, while Model 104 meets industrial Class 2. Great care has been taken during the design process to ensure that the units are comfortable to hold, robust and easy to use, whilst performing accurately throughout a wide range of temperature, humidity and pressure conditions. The calibrators are powered by an easy to access single 9 volt battery giving many months or even years of operation. An automatic shut-off circuit ensures power conversation should you forget to switch the unit off after calibrating. www.pulsarinstruments.com [email protected]

Applications Most noise related regulations stipulate that the sound level meter or dosemeter is calibrated before each measurement session and checked again before turning the instrument off. Noise measurements made for ‘official’ use, such as industrial health and safety or environmental monitoring, are not valid unless correct calibration procedures have been followed. Operation With the Models 103 and 104, the calibrator is placed over the microphone of the sound level meter and started by pressing the ON button, making sure the microphone is right inside the calibrator cavity. On older manual...