"1/2"" Free-field Microphone, 8 Hz to 12

Free-field microphone for transport noise measurements, architectural acoustics, and electroacoustic applications between 20 Hz to 12.5 kHz.

Dyn. range : 19 – 138 dB
Freq. range : 20 – 12500 Hz
Polarization voltages : V
Sensitivity : 31.6 mV/Pa
Temperature range : -30 – 100 ℃

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Type 4188 is designed for free-field measurements where an economy microphone with medium sensitivity is required. Being prepolarized, Type 4188 can be used with both CCLD and classical preamplifiers.

Medium class sound level meters
Equipment complying with IEC 61672 class 1
Random-incidence measurements
Portable sound measuring equipment
Being prepolarized, Type 4188 is especially well suited for battery-operated equipment or for operation in environments with high humidity.

Sound & Vibration Pocket Handbook 2022	Tech Notes	English
TEDS Microphones	數據表	English
TEDS Microphones	數據表	Japanese

Key Attributes: Microphones
标准	ANSI S1.4
声场	Free field
极化	CCLD
灵敏度	31.6 mV/Pa
下限频率	20 Hz
上限频率	12.5 kHz
较低动态范围	19 dB
较高动态范围	138 dB
直径	1/2 inch
排气	Rear
最低温度	-30 °C
最高温度	100 °C
最低温度	-22 °F
最高温度	212 °F
输出信号	Passive

Product Code	Description
-4228---	Pistonphone / 活塞发生器
-4231---	Sound Calibrator Class 1 and LS, 94 and
UA-0033---	Electrostatic Actuator 1/2" for HBK Mic
UA-1260---	Adaptor 1/2"Mic to 1/2"Preamp, 80° Angle
UA-0459---	"Windscreen for 1/2"" microphones, 65mm
UA-0386---	Nose Cone for 1/2" Mic
DD-0606---	Mic Protection Grid D13,2mm

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