لرزه سنج مدل S-400 
این نوع لرزه سنج برای ثبت داده های ریزلرزه ای در طول آزمایشات شکست هیدرولیک مخازن طراحی شده است.
به منظور به حداکثر رساندن حساسیت و به حداقل رساندن سطح نویز از چهار رشته ژئوفون در هر مولفه استفاده می کند. دارای حساسیت بالای 3000 ولت متر بر ثانیه می باشد.
بروشور
مشخصات فنی: | MODEL S400A (without electronics) |
| Number of channels: | 3channels, Vert ical, North-South, East-West |
| Channel Resistance | 13600 OHms |
| Sensitivity | 368 V/m/s |
| Natural Frequenc y | 4.5H z (10Hz, 14Hz, 28Hz, 35Hz under request) |
| Open cir cui t damping | 0.76 |
| Cable length | Standard 20m, up to 200m |
| Size | 460mm length, 50mm diameter |
| Weight (geophone enclosure) | 6.3KG |
| MODEL S400B (with preamplif ier) |
| Number of channels: | 3channels, Vert ical, North-South, East-West |
| Channel Resistance | 500 OHms |
| Sensitivity | 3000 V/m/s |
| Natural Frequenc y | 4.5H z (10Hz, 14Hz, 28Hz, 35Hz under request) |
| Power | 12Vdc, 41mA (0.49W) |
| Cable length | Standard 20m, up to 200m |
| Size | 460mm length, 50mm diameter |
| Weight (geophone enclosure) | 6.3KG |
| MODEL S400C (with signal conditioning electronics - bandwidth extension) |
| Number of channels: | 3channels, Vert ical, North-South, East-West |
| Channel Resistance | 500 OHms |
| Sensitivity | 3000 V/m/s |
| Natural Frequenc y | 1Hz (0.5H z, 0.2Hz under request) |
| Power | 12Vdc, 43mA (0.49W) |
| Cable length | Standard 20m, up to 200m |
| Size | 460mm length, 50mm diameter |
| Weight (geophone enclosure) | 6.3KG |
| ALL MODELS GEN ER AL CHAR ACTERISTICS |
| Mass lock , centering | Not required |
| Temperature range | -20 to +70oC |
| Humidity | 100%, IP67 enclosure |
| Submersible | 1000 meters |
