CRY375 Measurement microphone
CRY375 is a 1/2'' external-polarization 200 V free-field measurement microphone that measures the undistorted true sound pressure of the microphone before it is placed in the sound field. The presence of the microphone in the sound field will affect the sound field and change its high-frequency sound field. Based on this characteristic, the free-field microphone has its frequency response adjusted to compensate for errors brought to high-frequency sound pressure in the sound field.
Standard-compliant
Compliance with IEC61094-4: 1995 Measurement microphones - Part 4: Specifications for working standard microphones
Compliance with GBT20441.4-2006 Measurement microphones - Part 4: Specifications for working standard microphones
| Technical specification of CRY375 |
|---|
| Sound field type | Free field type |
| Sensitivity (@ 250 Hz ± 2 dB) | 12.5 mV/Pa |
| Sensitivity (@ 250 Hz ± 2 dB) | -38 dB re 1V/Pa |
| Frequency response (±2 dB) | 3.15Hz~40kHz |
| Polarization voltage | 200V |
| Typical capacitance | 13 pF (250 Hz) |
Upper limit of dynamic range (re. 20 uPa) | ≥160dB(distortion < 3%) |
| Lower limit of dynamic range (re. 20 uPa) | ≤20dB(A) |
| Range of operating temperature | -30℃~120℃ |
| Temperature coefficient (-10 ℃ to 50 °C) | 0.005dB/℃ |
| Static pressure coefficient | -0.01dB/kPa |
| Relative humidity range (without condensation) | 0~90%RH |
| Relative humidity coefficient | <0.1dB(0 - 90% RH without condensation) |
| Pressure equalization method | Post-pressure equalization |
| IEC 61094-4 Designation | WS2F |
| Height (without protective grid) | 12.6mm |
| Diameter (including protective grid) | 13.2mm |
| Height (without protective grid) | 11.5mm |
| Diameter (without protective grid) | 12.7mm |
| Preamplifier with thread | 11.7mm-60UNS |
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