1/4" FREE-FIELD MICROPHONE, EXT. POLARIZED
Free-field microphone designed for high-level and high-frequency measurements over a frequency range of 4 Hz to 100 kHz.
FAMILY 4939
Using stainless steel diaphragm and protection grid, Type 4939 Microphone is built to withstand rough environments and can be used in high-temperature measurements up to 150°C (302°F).
The microphone requires an external polarization voltage and must therefore be used with a classical preamplifier. Externally polarized microphones can be used at higher temperatures without severe changes in measurement sensitivity.
Code | Actions | Price | Availability | Sensitivity [mV/Pa] |
---|---|---|---|---|
-4939-A-011- |
|
- | 4 mV/Pa | |
-4939-L-002- |
|
- | 3.5 mV/Pa | |
-4939-C-002- |
|
- | 3.5 mV/Pa |
File |
Description |
Type |
Languages |
Size |
---|---|---|---|---|
TEDS Microphones | Technical Document | English | 249 KB |
Standard | IEC 61094 |
Sound field | Free field |
Polarization | Classical |
Sensitivity [mV/Pa] | 3.5 mV/Pa, 4 mV/Pa |
Lower frequency [Hz] | 4 Hz |
Higher frequency [Hz] | 100 kHz |
Lower dynamic range [dB] | 35 dB |
Higher dynamic range [dB] | 164 dB |
Diameter | 1/4 inch |
Venting | Side |
Minimum Temperature [°C] | -20 °C |
Maximum Temperature [°C] | 80 °C |
Minimum Temperature [°F] | -4 °F |
Maximum Temperature [°F] | 176 °F |
Output signal (connectivity) | Passive |
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.