measurement microphone / externally-polarized / 1/8" / pressure
Bruel and Kjaer
Type 4138-A-015 is developed to measure high-frequency in restricted spaces.
Its uses comprise of measuring high-frequency, and also measuring PULSE. It is used for applications that need a high degree of spatial resolution or where there is limited space, such as, testing of models.
It features a Sensitivity of 1 mV/Pa, a Frequency of 6.5 Hz to 140 kHz with Dynamic range of 52.2 to 168 dB; and Temperature specifications of – 30 to 100°C (– 22 to 212°C), polarization of 200 V.