Sound Calibrator CA111


CA111 is a small sound source for calibration of measurement microphones, sound level meters and other sound measurement equipment. The calibrator can be used on 1/2-inch and 1/4-inch microphones with adapter. It conforms to IEC 60942:2003 Class 1, ANSI S1.40-1984 and GB/T 15173-1994. and has dual 94 & 114 dB sound pressure level outputs.



StandardIEC60942:2003 Class 1, ANSI S1.40-1984, GB/T 15173-1994
Sound Pressure Level94.0 dB ±0.3 dB and 114.0 dB ±0.3 dB re 20 μPa
Frequency1000Hz ±0.5%
Microphone DiameterAccording to IEC61094-4: 1/2” & 1/4”
Harmonic Distortion<2% Stabilization Time: <10 s
Equivalent Free-field Level-0.2 dB for 1/2” Microphones
Equivalent Random Incidence Level+0.0 dB for 1/2”, 1/4”
Reference ConditionsAmbient Temperature: 25°C (77°F) / Ambient Pressure: 101.3 kPa / Humidity: 55% RH / Effective Load Volume: 250 mm3
Environmental ConditionsTemperature: -10°C-50°C (14°F -122°F) Pressure: 65 kPa to 108 kPa Humidity: 10 to 90%RH (non-condensing)
Power SupplyBatteries: 1.5 V LR6 (AA battery) × 2 Lifetime: Typically 40 hours with alkaline batteries at 25°C (77°F)
WeightWeight: ≈180g, including batteries