Product Description
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| LGT-20D Geophone is compatible with all field data acquisition systems. All operating parameters are confirmed with a proprietary computerized test system during the manufacturing process. This can help the customers to carry on the geological explore in any corner in the world and obtain the detail and correct geological data. |
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| Type |
LGT-20D4.5 |
LGT-20D10 |
LGT-20D14 |
LGT-20D28 |
LGT-20D40 |
| Natural Frequency (Hz) |
4.5 ± 0.5Hz |
10 ± 5% |
14 ± 5% |
28 ± 5% |
40 ± 5% |
| Open Circuit Damping |
0.7 ± 5% |
0.3 ± 5% |
0.22 ± 5% |
0.27 ± 5% |
0.37 ± 5% |
| Damping with Shunt Resistance |
|
0.7 ± 5% |
0.51 ± 5% |
0.552 ± 5% |
0.576 ± 5% |
| Intrinsic Voltage Senditivity (V/cm/s) |
0.234 ± 5% |
0.28 ± 5% |
0.28 ± 5% |
0.39 ± 5% |
0.42 ± 5% |
| Sensitivity with Shunt Resistance (V/cm/s) |
|
0.2 ± 5% |
0.2 ± 5% |
0.28 ± 5% |
0.3.4 ± 5% |
| Coil Resistance |
395 ± 5% |
395 ± 5% |
395 ± 5% |
395 ± 5% |
575 ± 5% |
| Close Circuit Resistance |
|
283 ± 5% |
283 ± 5% |
283 ± 5% |
415 ± 5% |
| Harmonic Distortion |
≤0.3% |
≤0.2% |
≤0.2% |
≤0.2% |
≤0.2% |
| Typical Spurious Frequency |
≥180 |
≥250 |
≥300 |
≥400 |
≥400 |
| Moving Mass (g) |
11.3 |
11 |
11 |
11 |
8.2 |
| Coil Excursion P-P |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
| Maintains Fn Specifications to Tilt Angle |
≤10 |
≤20 |
≤20 |
90 |
90 |
| Core Unit Diameter (mm) |
25.4 |
25.4 |
25.4 |
27 |
27 |
| Core Unit Height (mm) |
33 |
33 |
33 |
33 |
33 |
| Core Unit Mass (mm) |
87 |
87 |
87 |
100 |
100 |
| Operating Temperature(℃) |
-40~+90 |
-40～+90 |
-40～+90 |
-40～+90 |
-40～+90 |
| Warranty (year) |
1 |
3 |
3 |
3 |
3 |
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| Payment Terms: | TT in advance |
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