AL NABRAS AL AALI CO.Oilfield Chemicals & Equipment Supply
High-reliability geophone sensors for engineering, survey and seismic acquisition. Seven standard models from 4.5 Hz to 14 Hz — full specification table below; other configurations, land cases and string assemblies available on request. All sensors are supplied with test certificates; warranty 1–3 years per model.
| P/I No | S10045 | S10050 | S10101 | S10140 | S10102 | S10103 | S10104 |
|---|---|---|---|---|---|---|---|
| Type | 4.5Hz | 5Hz | 10Hz-R | 14Hz | 10Hz | 10Hz-P | 10Hz-PR |
| Nature frequency （Hz） | 4.5±10.0% | 5±10.0% | 10±5.0% | 14±5.0% | 10±5.0% | 10±2.5% | 10±2.5% |
| Coil resistance (Ω) | 375±7.5% | 375±5.0% | 375±5.0% | 395±5.0% | 395±2.5% | 375±2.5% | |
| Open circuit damping | 0.6±7.5% | 0.7±5% | 0.271±5.0% | 0.2±5.0% | 0.30±5.0% | 0.316±2.5% | 0.25 |
| Closed circuit damping | 0.6±5.0% | 0.6±5.0% | 0.70±5.0% | 0.7±2.5% | 0.686+5% | ||
| The open-circuit sensitivity (Vs/m) | 28.8±7.5% | 98±5% | 28.8±5.0% | 28.8±5.0% | 28.0±5.0% | 27.5±2.5% | 28.8±2.5% |
| Sensitivity with shunt resistor (Vs/m) | 22.7±5.0% | 18.2±5.0% | 20.0±5.0% | 19.5±2.5% | 20.9±2.5% | ||
| Damping resistance（Ω） | 1400 | 640 | 1000 | 1000 | 1000 | ||
| Harmonic distortion (%) | ＜0.20% | ≤0.20% | ＜0.20% | ＜0.20% | ＜0.20% | ＜0.1% | ≤0.1% |
| Spurious frequency (Hz) | ≥140Hz | ＞250Hz | ≥240Hz | ≥240Hz | ≥200Hz | ＞250Hz | ＞240Hz |
| Suspension body quality (g) | 11g | 15.8 | 11.3g | 11.6g | 11g | 11.2g | 11.0g |
| Maximum coil displacement p-p (mm) | 4 mm | 2mm | 2 mm | 2 mm | 1.5 mm | 1.5mm | 2.0mm |
| Allow the tilt angle （º） | ≤20° | ≤20° | ≤20° | ≤20° | ≤20° | ≤10° | ≤10° |
| Operating Temperature Range (℃) | -40℃～+100℃ | -40℃～+80℃ | -40℃～+100℃ | -40℃～+100℃ | -40℃～+100℃ | -40℃～+100℃ | -40℃～+80℃ |
| Core height (mm) | 36mm | 33.5mm | 32mm | 32mm | 33.5mm | 33.5mm | 32.0mm |
| Core diameter (mm) | 25.4mm | 27.3mm | 25.4mm | 25.4mm | 25.4mm | 25.4mm | 25.4mm |
| Weight (gram) | 86g | 105g | 74g | 74g | 86g | 86g | 74g |
| Warranty Period | 1 | 1 | 3 | 3 | 3 | 3 | 3 |