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Bruel & Kjaer 4220 Pistonphone acustic calibrator
Review Consensus: 9 Rating: 9 Number of users: 1
 | "Descrizione" by Al222 (23258 pt) | 2020-Oct-17 16:48 |
Review Consensus: 9 Rating: 9 Number of users: 1
| Evaluation | N. Experts | Evaluation | N. Experts |
|---|---|---|---|
| 1 | 6 | ||
| 2 | 7 | ||
| 3 | 8 | ||
| 4 | 9 | ||
| 5 | 10 |
Pistonphone 4220 is a portable, battery operated instrument for calibrating sound level meters and measuring sets.
Sound level 124 dB compared to 20 uPa with individual calibration.
Accuracy +/-0.2dB.
Frequency 250 Hz +/-1% sinusoidal.
Sold alone or in a container with optional accessories.
First version:
Last version:
Used with microphones from 1" to 1/8".
Uses IEC R6 type batteries (AA)
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