检波器型号 Geophone Type | LGT-20D28 |
自然频率 Fn Natural Frequency (Hz) | 28 ± 5% |
开路阻尼系数 Bo Open Circuit Damping | 0.27 ± 5% |
闭路阻尼系数 Bo Damping with 1000Ω shunt Resistance | 0.552 ± 5% |
灵敏度 G Intrinsic Voltage Sensitivity
(V/m/s) | 39 ± 5% |
闭路灵敏度 G Sensitivity with 1000Ω shunt Resistance (V/m/s) | 28 ± 5% |
线圈电阻 Rc Coil Resistance (kΩ) | 395 ± 5% |
谐波失真 D Harmonic Distortion (%) | ＜ 0.2 |
典型假频（Hz）
Typical spurious frequency | ≥ 350 |
线圈最大位移
Case to Coil Motion P-P (mm) | 1.5 |
悬体质量M Moving Mass (g) | 11 ± 5% |
最大倾角
Maintains Fn specifications to tilt angle | 90° |
芯体直径 Unit Diameter (mm) | 27 |
芯体高度 Unit Height (mm) | 33.3 |
芯体质量 Unit Mass (g) | 100 |
工作温度 Operating Temperature (℃) | -40 ~ +90 |
质保期 Warranty（year） | 3 |
