Stazione Sismica

La stazione sismica è formata da un digitalizzatore completo a 24 bit e 3 canali con 3 sensori al suo interno (geofoni a 4.5Hz di frequenza di risonanza). È questo uno strumento completo particolarmente adatto per la rilevazione della sismicità locale (raggio 0-150km).

Caratteristiche tecniche

  • Analogue channels: 3
  • Anti alias filter: 1 poles 20Hz low-pass filter
  • Band-pass: standard DC to 20Hz (customizable)
  • A/D converter: 24 bit sigma delta
  • Type: Differential input
  • Gain: fixed gain
  • Input range: +/- 1V
  • Overvoltage protection: zener diode up to 1kV for few mS
  • Damping: geophones internally damped, external sensor damping with external resistors
  • Input Impedance: typically >= 1 Mohm
  • Noise level: typically < 2.5 counts at 100 SPS
  • Crosstalk rejection: > 140dB
  • Skew time: zero (simultaneously sampling on all 3 channel)
  • Dynamic range: 140dB at 25 SPS
  • Clock: 10ppm stability
  • Precision: 5ppm at 20°C
  • Sincronization: GPS receiver included
  • GPS Antenna: Amplified antenna with 10mt of coaxial cable and BNC connector
  • Comunication: 1 RS232 port at 38400 baud
  • Protocol: binary proprietary supported by SEISLOG and SEISMOWIN
  • Sample frequency: 10, 20, 25, 50, 100, 200 SPS
  • Power supply: 10-25Vdc - 4.5W
  • Operating temperature: -20/+70 °C
  • Cabling: RS232 and power cable provided with the unit
  • Weight: 1,5 Kg
Stazione Sismica