Established more than thirty five years ago, Güralp Systems Ltd is a leading global provider of seismic instrumentation and seismic monitoring systems. We employ talented and dedicated individuals from a range of disciplines including engineering, science and manufacturing.

We provide a full range of products and services including:
  • Broadband seismometers and force balance accelerometers
  • Bespoke engineering and system design
  • Supply of turnkey seismic/compliance monitoring systems
  • Field services including integration testing and commissioning
  • Project management
  • Maintenance and after-sales support
  • Summary data analysis
  • Quality Control


Over the last 35 years, Güralp has supplied thousands of seismic instruments, including borehole and ocean bottom systems, to customers across all continents and in a range of sectors:

Academic Research and Government

Civil Engineering




Güralp Systems is established and the revolutionary 3T seismometer is launched.

All of our seismic sensors employ the principle of negative force feedback to minimise the motion of the mass, and keep it centred within the seismometer frame. This technology vastly extends the bandwidth and linearity of the seismometer, recording seismic signals with periods from 360 seconds to over 100 Hz.


1987 - 1989

Incorporation and our first major projects

Güralp Systems Limited is incorporated in 1987 and shortly after we start working with Kiyoshi Suyehiro based in Tokyo. With him, we develop the first ever ocean bottom borehole seismometer for deployment in the Japan Sea. In 1989, the instrument is installed in the sediment to a depth of 715 m in 2,807 metres of water. The project forms part of the Ocean Drilling Program (ODP), an international program for furthering Earth Sciences.

1990 - 1999

Our product range expands

During the 1990's we launch a number of new instruments including the 5T accelerometer, the precursor to today's Fortis. We also introduce our first digitisers, initially the DM16 and then the more powerful DM24.

The decade is rounded off perfectly with a Queens Award for Export Achievement in 1999.

1990 - 1999

2000 - 2009

Established and growing

In 2001, we win the contract to run the Eskdalemuir seismic array in Scotland, an auxiliary seismic network for the International Monitoring System (IMS).

We further extend our digitiser and data recording product capability and launch the popular 3ESPC seismometer.

In 2008 we are selected to supply borehole instrumentation as part of the ‘San Andreas Fault Observatory at Depth (SAFOD) project.

2010 - 2019

Product focus

In 2010 we complete the installation of a cabled OBS system in the Marmara Sea, Turkey and our work on OBS systems accelerates.

Also in 2010 a private equity firm acquires the main share-holding in the business.

In 2016 our first 'any angle' sensor, the Radian is launched alongside the new Minimus digitiser featuring advanced data communication capabilities. This sparks a period of rapid product development which sees the launch of the Fortimus, Certimus and Aquarius instruments as well as the Minimus+ digitiser.

In 2019 we secure a contract to supply 120 Aquarius ocean bottom systems to Canada’s National Facility for Seismic Imaging (“NFSI”) based at Dalhousie University in Halifax.

2010 - 2019

2020 - Today

More recently

In late 2020 seven experienced employees complete a management buy-out of the company.

Substantial project wins include supplying 190 digital accelerometers to the Canadian government for Earthquake Early Warning in 2021 and; in 2022, a project to supply 300 full seismic stations to the China Earthquake Administration.

At the end of 2022, we launched Certis and Minimus2 to a warm reception and celebrated 35 years since incorporation! In December 2023, working in partnership with Istituto Nazionale di Geofisica e Vulanologia (INGV) we successfully deployed the Worlds first SMART cable on the ocean floor near Catania, Sicily.

In 2024 we launched the dual sensor Hexis, a posthole instrument with a realised dynamic range of over 200 dB.

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