Low Frequency Geophone Acoustic Sensor for Earthquake Detection
Product Description
Low Frequency Geophone Acoustic Sensor for Earthquake Detection
Type Ⅲ geophone is developed using the latest acoustic sensor technology. It is an acoustic sensor with small size, low frequency, high acoustic sensitivity, and low acceleration sensitivity. It has the advantages of high resistance to acceleration and flow noise. It is widely used in earthquake detection. And oil exploration and other fields, the maximum working depth can reach 100m.
Main Specifications:
Physical characteristics
Dimensions :Φ18×54 mm
Weight :32g
Displacement 22ml
Temperature characteristics：
Operating temperature :0℃～50℃
Storage temperature :-10℃～70℃
Sensitivity：
Voltage sensitivity -194.0dB (ref: 1V/μPa)
Change with frequency ≤±1.5 dB
Change with depth ≤1.5 dB
Change with temperature ≤1.5 dB
Electrical characteristics：
Frequency range 1Hz～500Hz
Static capacitance 16000pF±10% (20℃, 1KHz measurement)
Insulation resistance ≥200MΩ (20℃, relative humidity 100% measurement)