Low Frequency Piezoelectric Geophone for Seismic Detection

           Low Frequency Piezoelectric Geophone for Seismic Detection 

Type I geophone is developed by using the latest acoustic sensor technology. It is a small size, low frequency and high sensitivity acoustic sensor. It has the characteristics of low acceleration sensitivity and good anti-flow noise performance. It is widely used in earthquake detection and petroleum For exploration and other fields, the maximum working depth can reach 200m.

 

Main Specifications

 

Physical characteristics:

Dimensions Φ18×48 mm

Weight 15g

Discharge volume 28ml

Temperature characteristics:

Operating temperature 0℃～50℃

Storage temperature -10℃～70℃

 

Sensitivity:

Voltage sensitivity -194.5dB (ref: 1V/μPa)

Varies with frequency ≤±1.5 dB

Change with depth ≤1.5 dB

Change with temperature ≤1.5 dB

Change with temperature ≤1.5 dB

Acceleration sensitivity ≤2mV/g (X, Y, Z direction)

Phase consistency ≤1.5° Distortion <-70dB (@20Hz, 0.5mbar)

Electrical characteristics

Frequency range 10Hz～1000Hz

Static capacitance 16000pF±10% (measured at 20℃, 1KHz)

Insulation resistance ≥200MΩ (20℃, relative humidity 100% measurement)