Guralp Systems

모델명 : 3T-120

제품용도 : 광대역 지진계(Weak Motion Broadband Seismometer)

3T-120

▶SYSTEM

•Configuration / Topology: Triaxial orthogonal (ZNE)
•Feedback: Force feedback

▶SENSOR PERFORMANCE

•Response: 120 s - 50 Hz( option 120 s - 100Hz )
•Output sensitivity / Clip Level: 2 x 750 V/ms-1 (1500 V/ms-1, other options available)
•Peak / Full scale output: Three channels - ±20 V (40 V peak-to-peak) differential
•Cross axis rejection: >65 dB 
•Linearity: >107 dB horizontal, >111 dB vertical 
•Lowest spurious resonance: >140 Hz (vertical)
•Self-noise: crosses NLNM at 166 s and remains below the high frequency limit of the NLNM at 10 Hz
•Dynamic range: 167 dB at 1 Hz (Full octave width across 1 Hz)

▶CALIBRATION

•Type: Pulse, sine wave and broadband
•Calibration controls: Independent signal & enable lines exposed on sensor connector

▶MASS / MASS MONITORING

•Locking: Remote or automatic mass locking, unlocking and centring
•Mass recentring range: +/-2.5° from horizontal

•CONTROL

•Mass control / locking: Lock, unlock, centre

▶POWER

•power voltage range : 10-36VDC

•power consumption : 0.75W

▶PHYSICAL/ENVIRONMENTAL

•Operating temperature: -20 to 75°C

•Operating humidity: 0 to 100%

•Enclosure ingress protection(standard): IP68

•Enclosure ingress protection(posthole): for deeper, long term immersion, the optional 100bar/10Mp waterproof connector is recommended

•Weight(standard): 15kg

•Weight(posthole): 15.15kg

▶지진계 모델별 주파수 범위 및 노이즈 자료