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ZT-343-547 Microphone Set -1/4''
Product Photo
Description
ZT-343 Microphone is a 1/4'' pre-polarization free-field measurement microphone. Because of low sensitivity, it is mainly used for high level and high frequency measurement. It can measure sound pressure levels up to 164 decibels. Titanium diaphragm can achieve high stability and high precision in harsh environment.
Specifications
Sound field type Free field type
Sensitivity, mV/Pa (dBV/Pa) 4mV±3dB -48dBV/Pa±3dB
Frequency response range 10 Hz - 90 kHz (±2 dB)
Polarization voltage 0V
Dynamic range (based on 20 uPa) 30～160dB
Upper limit of dynamic range (based on 20 uPa) ≥160dB （250Hz，distortion < 3%）
Equivalent noise (based on 20 uPa) ≤30dBA（250Hz）
Range of operating temperature -30℃ ～ +70℃
Temperature coefficient 0.01dB /℃（-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 method Post-pressure equalization
IEC 61094-4 Designation WS3F
Input impedance >2GΩ/50pF
Output impedance <20Ω
Power supply IEPE（2mA～10mA）
Rated operational current 4mA
Noise (A-weighted) <3µVrms
Linearity (20 - 20 KHz) <10µVrms
Gain -1.2dB
Connector SMB port
Applications
Ultrasonic measurementHigh-frequency acoustics