Bruel and Kjaer 4204 Overview
Reference Sound Source Type 4204 is a calibrated source of sound power with well defined operating characteristics and a predictable performance. It is rugged, compact and stable, and is therefore suitable for both field and laboratory use.
Features:
Features:
- Fulfils ISO 3741, ISO 3747 and ISO 6926 for calibrated sound power sources
- Frequency range from 100Hz to 20 kHz
- Sound power output 91 dB re 1 pW (A-weighted, 50 Hz line frequency) and 95 dB re 1 pW (Aweighted, 60 Hz line frequency)
- Temperature range –10°C to + 50°C
- 50 and 60 Hz operation
- Long-term stability
- Individual calibration chart supplied
- Compact and rugged
- Fitted with safety grid
