| Customization: | Available |
|---|---|
| Accuracy: | <1mm |
| Horizontal Line: | 1 |
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40Hz geophone (ST-14N) in vertical direction (P wave) and horizontal direction (S wave) available, which are suitable for deep seismic exploration, advance perdiction, natural seismic survey, pulsating microseismic survey of bridges, dams, highways and railways, safety monitoring, engineering pulse measurement and other vibration analysis.
- Good parameter consistency.
- Firm mechanism structure.
- Good sealability.
- Suitable for multi-wave component seismic data acquisition.
- 3 Year limited warranty on basic element exclusive of high voltage, lightening or physical abuse.
- Custom geophone connector and lead wire applicable upon request.
- 20DX-14Hz geophones are also available.
| Type | ST-14N (Equivalent to SM-4,14hz) |
ST-20DX 14hz (Equivalent to GS-20DX,14hz) |
| Natural frequency ( Hz ) | 14 ± 5% | 14±5% |
| Open circuit damping | 0.2 ±5% | 0.22 |
| Damping with Shunt Resistor | 0.6 ± 5% | 0.51±5% |
| Open Circuit Intrinsic Voltage Sensitivity(V/m/s) | 28.8 | 28.0 |
| Sensitivity with Shunt Resistor(V/m/s) | 18.2 ± 5% | 20.0±5% |
| Coil Resistance (ohm) | 375 ± 5% | 395±5% |
| Harmonic Distortion ( % ) | <0.2 | ≤0.2 |
| Typical Spurious Frequency ( Hz ) | >=240 | ≥250 |
| Moving Mass ( g ) | 11.6 | 11.0 |
| Max.coil excursion p-p (mm) | 2.0 | 1.5 |
| Max.tilt angle | 20º | 20º |
| Element Diameter (mm) | 25.4 | 25.4 |
| Element Height (mm) | 32 | 33.5 |
| Element Weight (g) | 74 | 87.0 |
| Operating Temperature(ºC) | - 40ºC to + 100ºC | - 45ºC to + 100ºC |
| Warranty Period | 3 years | 3 years |
| All parameters specified herein are rated at a temperature 20ºC±2ºC. | ||
| 3-year limited warranty on basic element exclusive of high voltage, lightening or physical abuse. | ||
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