PCB-EX378B02
- 1/2 "ICP® Precision Microphone for Free Field Applications
- Sensitivity 50 mV / Pa
- Dynamic range> 137 dB
- Frequency range 3.75 ... 20,000 Hz
- BNC connector
- Calibrated as a system
- With ATEX / IECEx approval
specifications | |||
---|---|---|---|
basic data | English units | SI units | |
Nominal microphone diameter | 1/2" | ||
application | Freifeld | ||
Sensitivity in the open circuit | 50 mV / Pa | [2] | |
Sensitivity in open circuit (± 1.5 dB) | -26 dB relative to 1 V / Pa | [2] | |
Frequency range (± 1 dB) | 7 … 10.000 Hz | ||
Frequency range (± 2 dB) | 3,75 … 20.000 Hz | ||
Lower cutoff frequency (3dB) | 1.0 to 3.0 Hz | ||
inherent noise | <15.5 dB (A) based on 20 μPa | [1] | |
Dynamic range (for harmonic distortion ≤3%) | > 137 dB based on 20 μPa | [1] | |
Operating conditions | |||
Temperature range (operation) | -40 … 176 °F | -40 … 80 °C | |
Temperature coefficient of sensitivity (+14 to + 158®F (-10 to + 70 ° C)) | 0.005 dB/°F | 0.009 dB/°C | [1][2] |
Influence by static pressure | -0,013 dB/kPa | [1][2] | |
Influence by humidity (0 ... 100%, non-condensing) | -0,01 … 0,01 dB/% RH | [2] | |
Influence by axial vibration (0.1 g, 1 m / s²) | 63 dB based on 20 μPa | [1] | |
Technical characteristics | |||
Polarisationsspannung | 0 v | [3] | |
supply voltage | 20 … 30 VDC | ||
Constant current supply | 2 ... 20 mA | ||
Bias voltage | 10 … 14 VDC | ||
output impedance | <50 Ω | ||
Maximum output range | ±7 Vpk | ||
Physical properties | |||
housing material | Stainless alloy | ||
pressure equalization | behind | [4] | |
Electrical connection | BNC-Stecker | ||
Mounting thread (protective cap) | 0.5 - 60 US | ||
Size - diameter (with protective cap) | 0,52 in | 13,2 mm | |
Size - diameter (without cap) | 0,50 in | 12,7 mm | |
Size - height (with protective cap) | 4,02 in | 102,1 mm | |
Size - height (without cap) | 3,99 in | 101,2 mm | |
Mass | 1,87 oz | 53 grams | [1] |
Hints | |||
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[1] | typically, | ||
[2] | Based on 250 Hz | ||
[3] | prepolarised | ||
[4] | Bleed through preamplifier. |
included supply | ||
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ACS-63 | Calibrate precision condenser microphones and preamplifiers together | (1) |