GEOINSTRUMENT INTERNATIONAL S.A.C. Productos para la mineria, geologia, geofisica, volardura, acustica y vibracion

High performance, low noise, compact, broadband seismometers

Overview

The Güralp 40 series of instruments are rugged and robust, triaxial, broadband seismometers ideally suited for installation in vaults with moderate noise.

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

Model range

40T – Robust broadband analogue seismometer – Datasheet
40TDE – Robust broadband digital seismometer with acquisition module – Datasheet

Specs

SYSTEM

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

PERFORMANCE

Response: 60 s to 50 Hz standard (other options available)
Output sensitivity / Clip Level: 2 x 400 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: >90 dB
Lowest spurious resonance: >450 Hz

CALIBRATION

Type: Pulse, sine wave and broadband
Calibration controls: Independent 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