PCB-378C20
basic data | |||
Nominal diameter of microphone | 1/2 " | ||
application | diffuse-field | ||
Sensitivity | 50 mV / PA | [2] | |
sensitivity (±1. 5 dB) | -26 dB in relation to 1 V / PA | [2] | |
frequency range (± 1 dB) | 7 … 6,300 Hz | ||
(±2 dB) frequency range | 3.75 … 16,000 Hz | ||
lower limiting frequency | 1.0 … 3.0 Hz | ||
Noise | < 20 dB in relation to 20 µPa | ||
noise | < 16.5 dB(A) in relation to 20 µPa | ||
Dynamic range | > 135 dB in relation to 20 µPa | ||
TEDS Chip | integrated by default | [1] | |
conditions of use | |||
Temperature range (operation) | -40 … 176 ° F | -40 … 80 ° C | |
Temperature coefficient of sensitivity | 0,005 dB/°F | 0.009 dB / ° C | [2] [3] |
Influence of static pressure | -0.01 dB/kPa | [2] [3] | |
Humidity coefficient of sensitivity | ±0, 001 dB/% RH | [2] | |
Influence by axial vibration | 63 dB in relation to 20 µPa | [3] | |
technical characteristics | |||
polarization voltage | 0 V | [4] | |
Supply | 20 … 30 V DC | ||
constant power supply | 2 … 20 mA | ||
Bias voltage | 10 … 14 V DC | ||
maximum output range | V ±7 PK | ||
Output impedance | < 50 Ω | ||
physical properties | |||
housing material | stainless steel alloy | ||
Pressure | back | [5] | |
electrical connection | BNC Jack | ||
mounting thread (cap) | 0,5 - 60 UNS | ||
size - diameter (with cap) | 0.52 in | 13.2 mm | |
size - diameter | 0.50 in | 12.7 mm | |
Size - height (with cap) | 3.62 in | 91.9 mm | |
size - height (without protection cap) | 3.58 in | 90.9 mm | |
Mass | 1.63 oz | 45.8 grams | [3] |
indications | |||
[1] | TEDS memory in accordance with IEEE PP1451. 4 | ||
[2] | based on 250 Hz | ||
[3] | typically | ||
[4] | Prepolarized | ||
[5] | pressurised by the preamplifier | ||
[6] | details: see PCBs Declaration of conformance PS064 | ||
included Accessories | |||
ACS-42 | calibration of a microphone with pre-amplifier | -1 | |
(TLD) TEDS memory in accordance with IEEE P1451. 4 | |||
Accessories | |||
ACS-63 | calibration microphone with pre-amplifier | -1 |