PCB-377C20
- Prepolarized 1/2"-Präzisionsmikrofonkapsel
für Diffusfeldanwendungen, - Empfindlichkeit 50 mV/Pa,
- Dynamikbereich >144 dB,
- Frequenzbereich 3,15 … 16.000 Hz
basic data | |||
Nominal diameter of microphone | 1/2 " | ||
application | diffuse-field | ||
Sensitivity in the open circuit | 50 mV / PA | [3] | |
sensitivity in the open circuit (±1. 5 dB) | -26 dB in relation to 1 V / PA | [3] | |
Frequency range (± 1 dB) | 5 … 6,300 Hz | ||
(±2 dB) frequency range | 3.15 … 16,000 Hz | ||
lower limiting frequency (-3 dB) | 1.0 … 2.4 Hz | ||
Resonance frequency | 12,000 Hz | [1] | |
noise | < 15 dB(A) in relation to 20 µPa | ||
dynamic range | > 144 dB in relation to 20 µPa | ||
microphone type in accordance with IEC 61094-4 | WS2D | [2] | |
conditions | |||
Temperature range (operation) | -40 … 248 ° F | -40 … 120 ° C | |
Temperature coefficient of sensitivity | 0,005 dB/°F | 0.009 dB / ° C | [3] [1] |
Influenceby static pressure | -0.01 dB/kPa | [3] [1] | |
Humidity coefficient of sensitivity | ±0, 001 dB/% RH | [3] | |
influence by axial vibration | 63 dB in relation to 20 µPa | [1] | |
technical characteristics | |||
capacity | 11 pF | [1] | |
Polarization voltage | 0 V | [4] | |
physical properties | |||
housing material | stainless steel alloy | ||
pressure equalization | Rear | ||
Mounting thread (amp) | 0,4606 60 UNS | 11,7 mm - 60 UNS | |
mounting thread (cap) | 0,5 - 60 UNS | 12,7 mm - 60 UNS | |
Size - diameter (with cap) | 0.52 in | 13.2 mm | |
size - diameter (without protection cap) | 0.5 in | 12.7 mm | |
Size - height (with cap) | 0.64 in | 16.2 mm | |
size - height (without protection cap) | 0.6 in | 15.3 mm | |
Mass | 0.28 oz | 7.8 grams | [1] |
notes | |||
[1] | typically | ||
[2] | the tolerances of the Model 377C-20 are between 50 and 70% of the permissible deviations in accordance with this standard. | ||
[3] | based on 250 Hz | ||
[4] | Prepolarized | ||
Accessories | |||
ACS-20 | Calibration of a precision capacitor microphone | -1 |