Highlights

- Designed to calibrate sound level meters, microphones and other noise measuring devices
- Suitable for use with type 1 or class I noise measuring instruments
- Easy to use in the field or the laboratory
- Standards are IEC60942:2003 Class 1, ANSI S1.40-1984, GB/T 15173-1994

Specification

Frequency: 1 kHz / ± 0.5 %
Sound pressure levels: 94 dB and 114 dB
Accuracy: ± 0.3 dB
Sound distortion: < 2%
Stabilization time: < 10 sec.
Microphone opening: 1/2" and 1/4" per IEC 61094-4
Standard: IEC60942:2003 Class 1, ANSI S1.40-1984, GB/T 15173-1994
Operating conditions: -10 ° ... +50 ° C (+10 ° F ... +122 ° F), 10% ... 90% RH
Power supply: 2 x 1.5 V AA batteries (LR6)
Dimensions: Approx. 75 x 70 x 46 mm (2.96 x 2.76 x 1.82")
Weight: Approx. 316 g (0.7 lb)