measurement microphone / prepolarized / pressure / 1/4"
Bruel and Kjaer
Designed to be used in small closed couplers, close to hard reflective surfaces or flushmounted.
Type 4944-A is designed to be used in small closed couplers, close to hard reflective surfaces or flushmounted. It is a ¼" prepolarized pressure-field microphones laser welded to ¼" CCLD preamplifiers. The preamplifier connects to CCLD input conditioning and supports IEEEP1451.4V 0.9 TEDS (Transducer Electronic Data Sheet).
Arrays in wind tunnels
DESIGN AND ROBUSTNESS
The shape of the microphone front ensures excellent microphone performance when flush-mounted. The laser-welded diaphragm on the microphone housing ensures that the sensitivity is resistant to rough handling during flush mounting.
MICROPHONE DATA CD
The microphone is supplied with a mini-CD. This mini-CD carries all individual calibration data as well as random-incidence and free-field corrections. The influence of ¼" Nose Cone UA-0385 is also available.
The sensitivity can be calibrated at 250Hz using Pistonphone Type 4228 with ¼" Adaptor DP-0775. The pressure-field response can be measured using Actuator UA-0033 with Adaptor DB-0264. The pressure-field response is equal to the actuator response.