½" DRUCKFELDMIKROFON, VORPOLARISIERT, 8 HZ — 10 KHZ
Druckfeldmikrofon, konzipiert für Kopplermessungen in Verbindung mit Telefon- und Hörgerätetests in einem Frequenzbereich von 8 Hz bis 10 kHz.
TYPE 4947
Das vorpolarisierte ½" Mikrofon Typ 4947 ist für Druckfeldmessungen wie Kopplermessungen in der Nähe von harten reflektierenden Oberflächen, in Gehäusen oder Hohlräumen optimiert, die im Vergleich zur Wellenlänge klein sind.
Zum Beispiel im Zusammenhang mit Telefon- und Hörgerätetests. Das Mikrofon ist vorpolarisiert, was den Anschluss an eine CCLD-Eingangskonditionierung ermöglicht. Das Mikrofon ist in der Lage, dem Falltest nach IEC 68-2-32 aus 1 Metern Höhe standzuhalten.
| Prepolarized Pressure-field 1/2-inch Microphone - Type 4947 | Data Sheets | English |
| Sound field | Pressure field |
| Polarization voltage | 200V |
| Sensitivity | 50 mV/Pa |
| Lower limiting frequency | 8 Hz |
| Higher limiting frequency | 10 kHz |
| Inherent noise | 15.5 dB(A) |
| Upper limiting of dynamic range | 148 dB |
| Diameter | 1/2 inch |
| Venting | Rear |
| Minimum Temperature | -40 °C |
| Maximum Temperature | 150 °C |
| Minimum Temperature | -40 °F |
| Maximum Temperature | 302 °F |
The sensitivity can be calibrated at 250 Hz by using Pistonphone Type 4228 with ½-inch Adaptor DP 0776. The actuator response can be measured using Electrostatic Actuator UA 0033.
The pressure-field response can be obtained by adding the relevant correction curve to the actuator response.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, MicroStrain and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.