Measurement microphone 4944

prepolarizedhyperfrequency1/4"

Prepolarized ¼″ Pressure-field Microphone Type 4944 is specially designed for high-level and high-frequency measurements. By using new materials and a new way of mounting the diaphragm, the microphone is geared to withstand rough handling. The assembly of the microphone in a clean room environment ensures that the microphone can be used in high-humidity environments and still produce reliable results. Type 4944 can be used with sound level meters to measure high sound pressure levels High-level measurements Flush mounting In small closed couplers, close to hard reflective surfaces or flush-mounted The sensitivity has been optimised to allow measurements of high sound pressure levels without clipping in the built-in CCLD preamplifier. 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. Calibration The sensitivity can be calibrated at 250 Hz using Pistonphone Type 4228 with ¼-inch 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.