LGT-20D4.5c Seismic Geophone

Seismic Geophone

Instruction:

LGT-20DS seismic Geophone features with its high sensitivity. It is suitable for detect the small vibration in field. it can be installed in variety of LGT geophone cases.

Features:

It features stable performance, high fidelity and consistent quality in conventional industrial of coal, Petroleum and natual gas exploration. LGT2119 geophones strings are used in a various applications that are far removed from their original applications as earthquake detectors, engineering vabrations, perimeters defensing.

Suitable Seismic Geophones:

Type	LGT-20D4.5C	LGT-20D4.5D
Natural Frequency (Hz)	4.5±0.5	4.5±0.5
Open Circuit Damping	0.7±10%	0.3±2.5%
Close Circuit Damping	NIL	NIL
Intrinsic Voltage Senditivity (V/m/s)	100±7.5%	80±2.5%
Sensitivity with Shunt Resistance (V/cm/s)	NIL	NIL
Coil Resistance	3950±2.5%	395±2.5%
Close Direct Current Resistance	NIL	283±2.5%
Harmonic Distortion	≤0.3%	≤0.1%
Typical Spurious Frequency	≥160	≥250
Moving Mass (g)	11.3	11
Coil Excursion P-P	4	1.5
Maintains Fn Specifications to Tilt Angle	≤20	≤20
Core Unit Diameter (mm)	25.4	25.4
Core Unit Height (mm)	36	33
Core Unit Mass (g)	87	87
Operating Temperature(℃)	-40 to +90	-40 to +90
Warranty (year)	3	3

*Longet Equipment Co., Ltd can customize different kind of seismic geophones to meet all the customer's various applications.

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