Measurement microphone
Measurement microphone
  • Measurement microphone

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.

Features
Standard-compliant

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
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 methodPost-pressure equalization
IEC 61094-4 DesignationWS2F
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 thread11.7mm-60UNS
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After-sales services
  • 20 years industry experience

  • 24 hours Technical Support

  • Professional engineers on line response

  • 2 hours response
    Solution within 2 work days

  • All life Costs Maintenance

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