Danish BK4231 acoustic calibrator

IEC 942 (1998) Class 1

Calibration pressure 94 and 114 dB SPL

Calibration frequency: 1000 Hz

Calibration accuracy ± 0.2dB

Sensors 1-inch and 1/2-inch

Features:

- comply with EN/IEC60942 (2003) and ANSI s1.40-1984 standards

- Correction accuracy ± 0.2dB

-94 dB SPL and 114 dB SPL2 calibration levels

- 1 kHz correction frequency

- Applicable Bruel &Kj r 1 "and 1/2" measurement microphones (1/4" and 1/8 "require optional adapters)