ÜRÜNLER

BROADBAND DIGITAL SEISMOMETER

A rugged and robust threecomponent digital broadband seismometer. 

The Güralp 40TDE is a true broadband, force-feedback seismometer. The 40TDE is ideally suited both for installation in vaults and for portable applications. The integrated digitizer and embedded communications module provide on-board and external storage options; a convenient web-based user interface; and multi-protocol communications over serial and Ethernet connections.

Applications

• Surface vault
• Subsurface vault
• Post-hole
• National seismic networks
• Temporary deployments e.g. aftershock monitoring and regional research projects

Key Features

• Force feedback broadband instrument
• Lifting handle and all connectors on the top of the instrument.
• Waterproof and durable with O-ring seals throughout
• Rapid singlehanded installation
• Digital output and communication versions available

SYSTEM

Configuration / Topology: Triaxial orthogonal (ZNE)

Feedback: Force feedback.

PERFORMANCE

• Response: 30s to 50Hz standard (other options available)
• Output sensitivity / Clip Level: 2 x 400 V/ms-1 (other options available)
• Peak / Full scale output: ±10 V (20V pk to pk)
• Cross axis rejection: >65dB
• Linearity: >90dB
• Lowest spurious resonance: >450Hz

CALIBRATION

Type: Pulse, sine wave and broadband

Calibration controls: Common signal & enable lines exposed on sensor connector

MASS / MASS MONITORING

Locking: No mass locking required

Mass recentring range: ±3° from horizontal

CONTROL

Mass control / locking: Remote offset zeroing