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Seismometers
> Seismic Instruments > Seismometers > STS-2.5STS-2.5
The STS-2.5 is the global standard for broadband seismometers, offering excellent low self-noise, high clipping level low power consumption, and stable operation over a wide temperature range.
• Same performance as the global standard seismometer, the STS-2 broadband seism
• Improved recording quality for large seismic signals compared to the STS-2
• Upgraded cables for durability, enhanced sealing of the control box, including, status displays, and one-touch zero adjustment operations
• RS232 remote monitoring (serial number, internal temperature and humidity, power consumption, tilt) Control or obtain auxiliary signals (POS/RAW) and control zero adjustment/lock through remote commands or RS232
• Upgraded instrument tilt allowance Significantly improved operating temperature range without zero adjustment, the instrument can meet the installation environment with large daily temperature differences
• Same performance as the global standard seismometer, the STS-2 broadband seism
• Improved recording quality for large seismic signals compared to the STS-2
• Upgraded cables for durability, enhanced sealing of the control box, including, status displays, and one-touch zero adjustment operations
• RS232 remote monitoring (serial number, internal temperature and humidity, power consumption, tilt) Control or obtain auxiliary signals (POS/RAW) and control zero adjustment/lock through remote commands or RS232
• Upgraded instrument tilt allowance Significantly improved operating temperature range without zero adjustment, the instrument can meet the installation environment with large daily temperature differences
| Response： | Flat to ground velocity from 8.33mHz (120s) to 50 Hz |
| Clip level： | ±13 mm/s ground velocity up to 20Hz Linear derating down to ±5.3 mm/s ground velocity from 20 - 50Hz |
| Clip level normalized gravity:： | 20-50Hz：0.34g；10Hz：0.17g； 1Hz：0.017g；0.1Hz：0.0017g；0.03Hz：0.00055g |
| Generator constant： | 2 x 750 V/m/s |
| Dynamic range: | ＞145dB |
| Parasitic resonances: | >140Hz vertical, >80Hz horizontal |
| No centering Tilt range: | ± 0.03º, (centering range limit ±0.48º) |
| No centering Temperature range: | ±25℃ |
| Power supply voltage: | 10-30VDC |
| Power consumption： | Average: 0.45W |
| Seismic signals output: | max. ±20V differential, 220Ω serial resistance per line |
| Auxiliary signal output: | max. ±10V single-ended, 1kΩ serial resistance |
| Calibration input: | ±10VDC |
| Control inputs: | 3-30VDC，0.5mA |
| Communication: | Push buttons or RS232, 9600 Baud, galvanically isolated |
| Operating temperature: | -20 o C to 70 o C guaranteed, -40 o C to 70 o C functional |
| Enclosure Rating: | IP67 |
| Size: | Cylindrical package, ø 235mm, height 260mm(same package as STS-2) |
| Weight: | 12Kg |
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