Level 2 Sound Calibrator

We are Exporter, Manufacturer & Supplier of Level 2 Sound Calibrator in Hengyang, Hunan, China. Meet the requirements of international standard IEC 60942:2003 for Level 2 sound calibrator, it is suitable for the calibration of noise measuring instruments such as level 2 sound level meters with the microphone nominal diameter of 23.77mma 12.7mm and 6.35mm.

Performance level: level 2.
Nominal pressure level: 94dB and 114dB,(benchmark is 2A 10-4Pa), the main sound pressure level is 94dB (the sound pressure for 1Pa)
Nominal frequency: 1kHz
Tolerance limit of sound pressure level: A 0.4dB.
Tolerance limit of frequency: A 2.0%.
Total distortion: 4.0%.
Equivalent volume: 280ml.
Couple resonator nominal diameter: 23.77mm (can be converted to 12.7mm when attached to adapter).
Power indication: dichromatic LED, the original color is white, it gives off green light under normal supply voltage and gives off red light when the supply voltage is lower than 6.5V.
Power source: 1 LR6 a type 9V laminated battery.
Weight: 250g.
Dimension: 48mm (diameter) A 138mm (length).
Operating temperature range: 0a i 40a .