CMG-3ESP Compact Seismometer from Güralp Systems

The CMG-3ESP Compact is Güralp Systems' smallest ever triaxial weak-motion seismometer, offering CMG-3 performance for the price and size of a medium-motion instrument. It is suitable for surface vault (observatory), subsurface vault and temporary installations.

Features

Covers the complete seismic spectrum with a single transfer function

60 s – 50 Hz standard response (with 1s, 30s and 120s options)

Self-noise below NLNM between 30 s and 16 Hz

Truly portable: under 9 kg, with lifting handle and convenient access to connectors

Highly compact form factor, only 168 × 258 mm

High linearity: >107 dB horizontal, 111 dB vertical (USGS figures)

Over 140 dB dynamic range over the entire passband (USGS figure)

Cross-axis rejection over 62 dB

Sensor axes orthogonal to within 0.1 °

Robust automatic mass locking, unlocking and centring

Adjustable feet allow for up to 4 ° tilt

Low power consumption (750 mW from 10 – 30 V input power)

Options

Long period response options: 1s, 30s, 60s (default), 120s.

Short period response options: 50Hz (default), 100Hz, 200Hz.

Feet allowing 8 ° of sensor tilt.

Hybrid response.

For manual mass locking and unlocking, consider the CMG-3ESP.