品牌: LGT
LGT-20D28检波器技术参数(20℃)

SPECIFICATIONS OF LGT-20D28 GEOPHONE ELEMENT

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