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ZT-332 Microphone Cartridge - 1/2''-PF
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Description
ZT-332 is a 1/2'' pressure-field type pre-polarization measurement microphone. The design of titanium alloy and precision stainless steel makes it not only excellent in corrosion resistance and robustness, but also extremely high stability. ZT-332 Measurement Microphone is usually used with an ear stimulator coupled cavity, such as 318 Ear Stimulator according to IEC60318-1, 711 Ear Stimulator according to IEC60318-4 (formerly called "IEC711"). It can also be used to measure the sound pressure in the closed cavity and on the surface of an object. Besides, it can be used as a diffusion field microphone.
Specifications
Sound field type Pressure field type
Sensitivity (@ 250 Hz ± 2 dB) 31.6 mV/Pa
Sensitivity (@ 250 Hz ± 2 dB) -30 dB re 1V/Pa
Frequency response (±2 dB) 3.15Hz~10kHz
Polarization voltage 0V(pre-polarization)
Typical capacitance 17pF
Upper limit of dynamic range (re. 20 uPa) ≥140dB(distortion < 3%)
Lower limit of dynamic range (re. 20 uPa) ≤16dB(A)
Range of operating temperature -20℃~60℃
Temperature coefficient (-10 ℃ to 50 °C) 0.012dB/℃
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) 16.2mm
Diameter (including protective grid) 13.2mm
Height (without protective grid) 15mm
Diameter (without protective grid) 12.7mm
Diaphragm ring diameter 12.1mm
Preamplifier with thread 11.7mm-60UNS
Protective grid thread 12.7mm-60UNS
Applications
Cavity measurementsCoupler measurements