Chapter 8. Specifications
Hybrid sensors | Velocity output bandwidth | 0.1 – 50 Hz |
| High pass filter output flat to acceleration | 0.01 Hz – spec* |
| High pass filter output flat to velocity | spec – 50 Hz* |
| Mass position output | DC – 0.1 Hz |
| Velocity sensitivity | 1400 V/m/s |
| Acceleration sensitivity | 2000 V/m/s2 |
Velocity sensors | Velocity output bandwidth | spec – 50 Hz* |
| Mass position output | DC – spec Hz* |
| Velocity sensitivity | 2 × 750 V/m/s |
| Mass position sensitivity | 1000 V/m/s2 |
Controls | Mass locking and unlocking | remotely operated |
| Mass centring | automatic, microprocessor controlled |
Mechanics and electronics | Sensors | 3 orthogonal sensors, each 0.180 kg |
| Lowest spurious resonance | above 140 Hz |
Total weight | 8 kg | |
| Sensor transducer type | capacitive displacement |
| Feedback transducer type | magnet/coil |
| Connector | pressure tight |
Temperature range with masses locked | –35 to +75 °C | |
| Operational temperature range | –20 to +65 °C** |
Power | Supply | 10 – 36 V |
Current at 12 V DC | 75 mA† | |
| Current at 12 V DC during calibration | 100 mA† |
Current at 12 V DC during centring (average) | 330 mA† | |
| Current at 12 V DC during locking and unlocking | 490 mA† |
*spec refers to the quoted frequency response value, e.g., for a “30 s” sensor, the value of spec would be 30 s = 0.033 Hz.
**Temperatures below –20 °C may be accommodated with additional care. Please consult Güralp Systems for advice.
†Because centring, locking, and unlocking consume varying amounts of power, it is recommended that you use a power supply capable of delivering 1 A at 12 V.