Measurement microphone sets
Measurement microphone sets
  • Measurement microphone sets

CRY331 Measurement microphone sets

Frequency response: 3.15 Hz - 16kHz; sensitivity: 40 mV/Pa

CRY331-CRY507 1/2" IEPE Free-Field Measurement Microphone Kit This kit consists of CRY331 Measurement Microphone and CRY507 IEPE  Preamplifier self-developed by CRYSOUND, with a BNC port for output. CRY331 Measurement Microphone can also be combined with CRY510 to launch a kit.

  • Stainless steel case
  • High stability
  • Wide range of applications
Features
Standard-compliant

Standard-compliant

  • Compliance with IEC 61094-4:1995 Measurement microphones - Part 4: Specifications for working standard microphones

  • Compliance with GB/T 20441.4-2006 Measurement microphones - Part 4: Specifications for working standard microphones

Typical frequency response curve of CRY331

CRY331 Microphone is a 1/2'' pre-polarization free-field measurement microphone that measures the actual sound pressure on the surface of the microphone diaphragm (including changes in the sound field due to the presence of the microphone itself). 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.

Typical frequency response curve of CRY331
Typical frequency response curve of CRY331

Typical frequency response curve of CRY331

CRY331 Microphone is a 1/2'' pre-polarization free-field measurement microphone that measures the actual sound pressure on the surface of the microphone diaphragm (including changes in the sound field due to the presence of the microphone itself). 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.

Preamplifier

Preamplifier

This kit includes a CRY507 IEPE  preamplifier which is powered by constant current source and featured by very high input impedance, very low noise floor, and a very wide frequency response range. It can be used with CRY300 series 1/2'' pre-polarization measurement microphones. The output interface uses a BNC plug, which can be easily connected to a professional measurement system. It is suitable for electroacoustic testers, multi-channel analyzers, noise analyzers and other instruments. It is also compatible with other brands of measurement microphones. Stainless steel grants it excellent corrosion resistance and protection, so it is very suitable for various harsh test environments.

Technical specification
CRY331-CRY507 microphone sets

Sound field type

Free field type

Sensitivity, mV/Pa (dBV/Pa)

40 mV/Pa(-28 dB) ± 2 dB

Frequency response range

3.15 Hz - 16 kHz (±2 dB)

Polarization voltage

0V

Dynamic range (based on 20 uPa)

16~138dB

Upper limit of dynamic range (based on 20 uPa)

≥138dB (250Hz,distortion < 3%)

Equivalent noise (based on 20 uPa)

≤16dBA(250Hz)

Range of operating temperature

-20℃ ~ +60℃

Temperature coefficient

0.012dB /℃(-10℃ ~ +50℃,250Hz)

Static pressure coefficient

-0.01dB /kPa

Relative humidity range

0~90%(without condensation)

Relative humidity coefficient

<0.1dB(0 - 90% without condensation)

Pressure equalization methodPost-pressure equalization

IEC 61094-4 Designation

WS2F

Input impedance

>10GΩ/0.5pF

Output impedance

<20Ω,<0.1%

Max. output voltage

>5.0Vrms (+24 V available)

Power supply

IEPE(2mA~10mA)

Rated operational current

4mA

Noise (A-weighted)

<3µVrms

Linearity (20 - 20 KHz)

<10µVrms

Gain

-0.7dB

Connector

BNCport

CRY331-CRY510 microphone sets

Thread interface

11.7mm×60UNS(M11.7×0.423mm)

Interface at the output terminal

BL5706 SMB to BNC Cable / 1.5m

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