Equivalent to SM-24 geophone 10Hz Sensor Vertical
| Type | EG-10HP-I (SM-24 equivalent) |
| Natural Frequency ( Hz ) | 10 ± 2.5% |
| Coil resistance(Ω) | 375±2.5% |
| Open Circuit Damping | 0.25 |
| Damping With Shunt Resistor | 0.686 + 5.0%, 0% |
| Open Circuit Intrinsic Voltage Sensitivity( v/m/s ) | 28.8 v/m/s ± 2.5% |
| Sensitivity With Shunt Resistor ( v/m/s ) | 20.9 v/m/s ± 2.5% |
| Damping Calibration-Shunt Resistance （Ω） | 1000 |
| Harmonic distortion ( % ) | ＜0.1% |
| Typical Spurious Frequency (Hz ) | ≥240Hz |
| Moving Mass ( g ) | 11.0g |
| Typical case to coil motion p-p ( mm ) | 2.0mm |
| Allowable Tilt | ≤10º |
| Height ( mm ) | 32 |
| Diameter ( mm ) | 25.4 |
| Weight ( g ) | 74 |
| Operating Temperature Range ( ℃ ) | -40℃ to +100℃ |
| Warranty Period | 3 years |
The sensor of SM24 geophone Sensor mainly consists of the following parts:
1. Inertial Mass Block: It is the core component of the sensor and is used to sense the vibration of seismic waves. When the crust vibrates, the inertial mass moves with it and converts the vibrations into electrical signals.
2. Sensor spring system: The spring system in the sensor is used to support the inertial mass and provide the restoring force that enables it to generate an accurate vibration response.
3. Action field: The SM24 geophone is equipped with an action field, which generates a restoring force for resetting the inertial mass to its initial position.
4. Inductive coil: The inductive coil in the SM24 detector is used to convert vibration information into electrical signals. As the inertial mass moves, it produces a voltage change relative to the coil, which converts the vibration signal into an electrical signal.
The accuracy and quality of these sensor components are critical to the performance of the SM24 geophone. Their design and manufacture require rigorous process and material selection to ensure high accuracy and reliability.
To sum up, the sensor of the SM24 geophone is composed of core components such as inertial mass, spring system, operating magnetic field and inductive coil. They work together to convert the vibration of seismic waves into measurable electrical signals.
