PCB-377A12
basic data | |||
Nominal diameter of microphone | 1/4 " | ||
application | pressure field | ||
Sensitivity in the open circuit | 0.25 mV / PA | [2] | |
sensitivity in the open circuit (±3 dB) | -72 dB in relation to 1 V / PA | [2] | |
Frequency range (±2 dB) | 4 … 20,000 Hz | ||
Lower limiting frequency (-3 dB) | 0,5 … 3.0 Hz | ||
resonance frequency (phase shift 90°) | 48,900 Hz | [1] | |
Noise | < 65 dB(A) in relation to 20 µPa | ||
dynamic range (for THD ≤ 3%) | > 178 dB in relation to 20 µPa | ||
Maximum peak value of the sound pressure level | 194 dB in relation to 20 µPa | ||
conditions of use | |||
temperature range (operation) | -40 … 248 ° F | -40 … 120 ° C | |
Temperature coefficient of sensitivity (-10 … 70 ° C) | 0,004 dB/°F | 0.007 dB / ° C | [2] [1] |
Influence of static pressure | -0.001 dB/kPa | [2] [1] | |
humidity coefficient of sensitivity (0 … 100%, non-condensing) | ±0. 001 dB / % RH | [2] | |
influence by axial vibration (0.1 g, 1 m/s²) | 72 dB in relation to 20 µPa | [1] | |
technical characteristics | |||
capacities t (polarized) | 4.6 pF | [1] | |
polarization voltage | 0 V | [3] | |
physical properties | |||
housing material | Stainless alloy | ||
pressure | back | ||
mounting thread (for amp) | 0,2244 "-60 UNS | 5.7 mm -. 60 UNS | |
mounting thread (for cover) | 0.25 "-60 UNS | 6,35 mm - 60 UNS | |
size - diameter (with cap) | 0.28 in | 7.0 mm | |
Size - diameter (without protection cap) | 0.25 in | 6.4 mm | |
size - height (with cap) | 0.41 in | 10.4 mm | |
size - height (without protection cap) | 0.36 in | 9.1 mm | |
mass | 0.06 oz | 1.7 grams | [1] |
Instructions | |||
[1] | typically | ||
[2] | based on 250 Hz | ||
[3] | Prepolarized | ||
Accessories | |||
ACS-20 | calibration of precision microphones | -1 |