KA-50
Acoustic calibrator
The KA-50 acoustic calibrator is the reference sound pressure source. It conforms to the requirements of EN 60942 standard for class 1.
Use
The calibrator is intended for the acoustic calibration of class 1 and class 2 sound level meters which are equipped with the microphones with a diameter of 1/2" and 1/4".
Reliability of measurement
The calibrator should be used for the control of the sound level meter before and after each measurement is conducted. Such control ensures that the measurement result is accurate and there is no need to repeat it.
Technical data
- Accuracy class:
- 1
- Nominal sound pressure level:
- 94 dB ± 0.3 dB re 20 μPa
- Nominal frequency:
- 1000 Hz ± 2%
- Nonlinear distortions:
- <3%
- Temperature range:
- -10 ÷ +50 ºC
- Static pressure:
- 80 ÷ 110 kPa
- Relative humidity:
- ≤ 90%
- Power supply:
- 9 V (6LR61) battery
- Dimensions:
- Ф 41 x 104 mm
- Weight:
- 250 g