PCB Piezotronics
PCB Piezotronics EX378B02 Intrinsically Safe Mic Atex Iecex Etl
PCB Piezotronics · Acoustics & Microphone
Model EX378B02:Intrinsically safe 378B02 microphone and preamplifier, ATEX, IECEx, ETL, ANZEx, approved
Key Features
Model EX378B02:Intrinsically safe 378B02 microphone and preamplifier, ATEX, IECEx, ETL, ANZEx, approved
- Nominal Microphone Diameter: 1/2"
- Frequency Response Characteristic: Free-Field
- Frequency Range: (±2dB)3.75 to 20000 Hz (3.75 to 20000 Hz)
- Inherent Noise: 15.5 dB(A) re 20 µPa
- Dynamic Range: 137 dB re 20 µPa
Spesifikasi
| Nominal Microphone Diameter | 1/2" |
|---|---|
| Frequency Response Characteristic (at 0° incidence) | Free-Field |
| Sensitivity (±1.5 dB) | -26 dB re 1 V/Pa / [2] |
| Sensitivity | 50 mV/Pa / [2] |
| Frequency Range (±2 dB) | 3.75 to 20000 Hz |
| Frequency Range (±1 dB) | 7 to 10000 Hz |
| Lower Limiting Frequency (3) | 1.0 to 3.0 Hz |
| Inherent Noise | 15.5 dB(A) re 20 µPa / [1] |
| Dynamic Range (3% Distortion Limit) | 137 dB re 20 µPa / [1] |
| Temperature Range (Operating) | -40 to +176 °F / -40 to +80 °C |
| Temperature Coefficient of Sensitivity (+14 to +158°F (-10 to +70°C)) | 0.005 dB/°F / 0.009 dB/°C / [1] [2] |
| Static Pressure Coefficient | -0.013 dB/kPa / [1] [2] |
| Humidity Coefficient of Sensitivity (0 to 100%, non-condensing) | ±0.001 dB/%RH / [2] |
| Influence of Axial Vibration (0.1g (1 m/s²)) | 63 dB re 20 µPa / [1] |
| Polarization Voltage | 0 V / [3] |
| Excitation Voltage | 20 to 30 VDC |
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