PCB Piezotronics
PCB Piezotronics 378A14 377A14 With 426A05 (Teds)
Model 378A14:1/4" pressure prepolarized 377A14 microphone and 426A05 preamplifier, TEDS programmed
Model 378A14:1/4" pressure prepolarized 377A14 microphone and 426A05 preamplifier, TEDS programmed
Key Features
Model 378A14:1/4" pressure prepolarized 377A14 microphone and 426A05 preamplifier, TEDS programmed
- Nominal Microphone Diameter: 1/4"
- Frequency Response Characteristic: Pressure
- Frequency Range: (±2dB)4.0 to 70000 Hz (4.0 to 70000 Hz)
- Dynamic Range: 173 dB re 20 µPa
Spesifikasi
| Nominal Microphone Diameter | 1/4" |
|---|---|
| Frequency Response Characteristic | Pressure |
| Sensitivity (±3 dB) | -60 dB re 1 V/Pa / [3] |
| Sensitivity | 1.0 mV/Pa / [3] |
| Frequency Range (±2 dB) | 4.0 to 70000 Hz |
| Lower Limiting Frequency (-3 dB) | 0.75 to 4.0 Hz |
| Inherent Noise | 50 dB(A) re 20 µPa / [1] [4] |
| Dynamic Range (3% Distortion Limit) | 173 dB re 20 µPa / [1] |
| TEDS Compliant | Yes / [2] |
| Temperature Range (Operating) | -40 to +158 °F / -40 to +70 °C |
| Temperature Coefficient of Sensitivity (+14 to +158°F (-10 to +70°C)) | 0.004 dB/°F / 0.007 dB/°C / [1] [3] |
| Static Pressure Coefficient | -0.003 dB/kPa / [1] [3] |
| Humidity Coefficient of Sensitivity (0 to 100%, non-condensing) | ±0.0014 dB/%RH / [3] |
| Influence of Axial Vibration (0.1g (1 m/s²)) | 66 dB re 20 µPa / [1] |
| Polarization Voltage | 0 V / [5] |
| Excitation Voltage | 20 to 32 VDC |
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