Sound Calibrator 4010

The 4010 is a sound calibrator conforming to IEC 60942 class 1 and ANSI S1.40 for the calibration and the verification of microphones and sound level meters.


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The combination of two sound pressure levels and two frequencies allow both level linearity and frequency linearity to be verified. Each sound calibrator is supplied with an individual calibration certificate.

The reference microphone and control circuit together maintain a constant sound pressure level inside the calibration coupler and automatically adjust for changes in load volume, temperature, atmospheric pressure and relative humidity. In addition the sound calibrator measures the environmental conditions temperature, atmospheric pressure and relative humidity.

Temperature measurementRange-10 °C to +50 °C
Accuracy±2 °C
Resolution0.1 °C
Atmospheric pressure measurementRange65 kPa to 108 kPa
Accuracy±0.4 kPa
Resolution0.1 kPa
Relative humidity measurementRange25% to 90%
Levels at reference conditions(94.0 ± 0.2)dB
Levels at reference conditions(114.0 ± 0.2)dB
frequency at reference conditions250 Hz (251.19 ± 0.30Hz)
frequency at reference conditions1000 Hz (1000.00 ± 1.00Hz)
Distortionmax. 2.0%
Stabilizing time20 seconds
Sensitivity to environmental conditionsas specified for IEC 60942 Class 1
Microphone sizewithout adapter(1/1)“
with adapter 4010-2(1/2)“
with adapter 4010-3(1/4)“
Battery type2x LR03 alkaline batteries
Battery sizeAAA-size acc. ANSI/NEDA
Battery life>10 hours
Power supply2 V to 3.4 V
DisplayTypMono-colour OLED graphical display
Resolution128 x 64 (W x H)
LED indicatortwo-colour LED
Main value of sound pressure level
IEC 60942, 6.3e
114.0 dB
Main value of frequency
IEC 60942, 6.3f
250 Hz
Ambient conditions – temperatureoperating range-10 °C to +50 °C
Ambient conditions – humidity,
non condensing
operating range25% to 90%
Ambient conditions – atmospheric pressureoperating range65 kPa to 108 kPa


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