1/8" PRESSURE-FIELD MICROPHONE, EXTERNALLY POLARIZED
Pressure-field microphone designed for very high-frequency measurements in confined spaces with a frequency range of 6.5 Hz to 140 kHz.
TYPE 4138
Type 4138 is designed for high-level and very high-frequency measurements and measurements in confined spaces. Being externally polarized, Type 4138 must be used with a classical preamplifier.
File |
Description |
Type |
Languages |
Size |
---|---|---|---|---|
1/8-inch Pressure-field Microphone Type 4138 | Technical Document | English | 508 KB |
Standard | IEC 61094 |
Sound field | Pressure field |
Polarization voltage | 200V |
Sensitivity [mV/Pa] | 1 mV/Pa |
Lower limiting frequency | 6.5 Hz |
Higher limiting frequency | 140 kHz |
Inherent noise | 43 dB(A) |
Upper limiting of dynamic range | 168 dB |
Diameter | 1/8 inch |
Venting | Side |
Minimum Temperature [°C] | -30 °C |
Maximum Temperature [°C] | 100 °C |
Minimum Temperature [°F] | -22 °F |
Maximum Temperature [°F] | 212 °F |
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.