Research Article
An Experiment Monitoring Signals of Coal Bed Simulation under Forced Vibration Conditions
Table 4
Technical data of microseism sensor.
| Index/model | Unit | SF1500S/SF1500SN |
| Linear output range | g peak value | ±3 | Sensitivity (differential) | V/g | 1.2 (2.4) | Frequency response | Hz | DC to 1500 | Frequency response (differential signal) | Hz | DC to 5000 | Dynamic range (100 Hz BW) | dB | 120 | Noise (10 to 1000 Hz) | ngrms/ | 300 to 500 | Transverse impedance | dB | >40 | Impact of restrictions | g peak value | 1500 | Vibration (20 Hz–2000 Hz) | g peak value | 60 | Operating temperature |
°C | 40 to +125 | Temperature sensitivity coefficient | ppm/°C | 75 | Drift thermal coefficient | μg/°C | ±100 | Linearity error | % full scale | ±0.1 | Input voltage | Volts DC | ±6 to ±15 | Static current | mA | 11.6 |
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