M 681

Specifications

Parameter	Value
Dimensions	1inch
Sound Field Type	Free field
Polarization Voltage	0V（Pre-polarized）
Frequency Response	6.3Hz – 16kHz ± 2dB 12.5Hz – 10kHz ± 1dB
Dynamic Range	12dB（A）-137dB （1000 Hz 失真<3%）
Noise Floor	12dB（A）
Sensitivity	100mV/Pa (-20.0± 2) dB re 1V/Pa
Standard	IEC 61094-4 type,WS1F
Pressure Equalization Method	Post-equalization
Operating Temperature	-20℃ ~ 60℃
Temperature Coefficient	/
Humidity Coefficient	/
Relative Humidity	10% - 90% no condensation
Static Pressure Coefficient	/

Specifications

Types of Acoustic Fields	Free Field
Polarization voltages	0V（Prepolarized）
Frequency range	6.3Hz – 16kHz ± 2dB 12.5Hz – 10kHz ± 1dB
Dynamic range	12dB（A）- 137dB（1000 Hz THD<3%）
Background noise	12dB（A）
Sensitivity mV/Pa(dBV/Pa)	100mV (-20.0dB) ± 2dB
Capacitance Typical	35.0pF
Temperature range, operation	-20℃ to 60℃
Temperature range, storage	Temperature：25℃±5℃，Humidity：50%±15%RH（Ensure the long-term stability of the sensor）
Humidity range non condensing	10 - 90% without condensation
Humidity coefficient	<0.1dB

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