1/4-INCH PRESSURE-FIELD MICROPHONE, EXTERNALLY POLARIZED
Pressure-field microphone for high-level and high-frequency measurements over a frequency range of 4 Hz to 70 kHz.
TYPE 4938
Pressure-field ¼-inch Microphone Type 4938 is designed for high-level and high-frequency measurements. The microphone is geared to withstand rough handling and high temperatures of up to 300°C (572°F).
| 1/4'' Pressure-field Microphone Type 4938 | Data Sheets | English |
| TEDS Microphones | Data Sheets | English |
| TEDS Microphones | Data Sheets | Japanese |
| Standard | IEC 61094 |
| Sound field | Pressure field |
| Polarization voltage | 200V |
| Sensitivity | 1.6 mV/Pa |
| Lower limiting frequency | 4 Hz |
| Higher limiting frequency | 70 kHz |
| Inherent noise | 30 dB(A) |
| Upper limiting of dynamic range | 172 dB |
| Diameter | 1/4 inch |
| Venting | Side |
| Minimum Temperature | -40 °C |
| Maximum Temperature | 300 °C |
| Minimum Temperature | -40 °F |
| Maximum Temperature | 572 °F |
La forma de la parte frontal del micrófono garantiza un rendimiento excelente cuando se instala empotrado, y el diafragma soldado con láser en la carcasa del micrófono asegura que la sensibilidad sea resistente a un manejo brusco durante la instalación empotrada. La robustez del micrófono le permite soportar una caída de 1 metro según la norma IEC 68-2-32.
La sensibilidad se puede calibrar a 250 Hz utilizando el pistófono Tipo 4228 con el adaptador de ¼ de pulgada DP 0775. La respuesta del Campo de presión se puede medir utilizando el actuador UA 0033 con el adaptador DB 0264. La respuesta del campo de presión es igual a la respuesta del actuador.
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.