Guralp Systems

모델명 : 3ESPCDE

제품용도 : 지진계(Weak Motion Digital Seismometer)

3ESPCDE

▶SYSTEM

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

 

▶SENSOR PERFORMANCE

Response: 60 s - 100 Hz ( option 120 s to 100 Hz )
Output sensitivity / Clip Level:  6000 V/ms-1 (2 x 3000 V/ms-1, other options available)

Peak / Full scale output: Three channels - ±20 V (40 V peak-to-peak) differential
Cross axis rejection: >62 dB 
Linearity: >107 dB horizontal, >111 dB vertical 
Lowest spurious resonance: >300 Hz (vertical)
Self-noise below NLNM(New Low Noise Model: Peterson, 1993, USGS): 30 s(0.03 Hz) to 16 Hz

Sensor Dynamic range: >140 dB

Calibration controls: Sine, step and broadband calibration via web interface or command-line

Operating tilt range: +/-2.5° from horizontal

MASS/MONITORING CONTROL

Locking: Remote auto mass lock/unlock

Mass centre: Remotely controlled automatic mass centring

 

▶DISITISER PERFORMANCE

Digitiser type : Fourth-order sigma-delta 

Digitiser resolution : 24-bit 

Dynamic range : > 140 dB at 20 samples per second, > 138 dB at 40 samples per second, > 135 dB at 80 samples per second, > 135 dB at 100 samples per second

Highest output capability: 3 x 1000 samples per second 

Digital filter types: FIR (linear phase) and IIR (for low latency mode) 

Decimation filters: 2, 4, 5, 8, 10 

Anti-aliasing filter at Nyquist: > 160 dB 

Absolute accuracy: < 0.50 % 

Nominal sensitivity: 3.2 µV/count 

Linearity: -116dB at 80 samples per second 

 

▶USER INTERFACE / SOFTWARE 

Digitiser control and configuration: Digitiser and sensor control via Güralp Scream! software (free download) and command line

Triggering modes: STA/LTA, level, external, software. Per channel voting and network voting via additional software or hardware. 

 

▶REAL TIME DATA COMMUNICATION

Interface/connections: Serial, Ethernet

Protocols: GCF(Scream!), SEEDlink, CD1.1 and GDI-link 

 

▶ON-BOARD DATA STORAGE

Internal storage capacity: 16 GB Flash memory with 2.0 USB port

Data recording: GCF and MiniSEED

 

▶POWER

power voltage range : 11-28VDC

power consumption : 2.65W(without GPS or Ethernet)

 

▶PHYSICAL/ENVIRONMENTAL

Operating temperature: -20 to 65°C

Operating humidity: 0 to 100%

Enclosure ingress protection: IP68

Weight: 9.4kg

 

▶지진계 모델별 주파수 범위 및 노이즈 비교 자료