About Geokon

Geokon, Incorporated is located in Lebanon, New Hampshire, USA and operates on a worldwide basis through a network of agencies. The company was founded in 1979 and currently has over 100 employees.

Over the years, Geokon, Inc. has emerged as The World Leader in Vibrating Wire Technology™ due to ourquality, responsive customer service and industry-leading designs. Our broad range of geotechnical instrumentation is manufactured at our factory in the USA, by a staff of trained, qualified and experienced machinists and assemblers.

In particular, Geokon, Inc., through innovation and experience, has developed a line of vibrating wire sensorsunsurpassed anywhere in the world. These highly reliable devices have contributed in no small way to the growing worldwide acceptance of vibrating wire as the most suitable technology for geotechnical applications.

Vibrating Wire Technology 

The resonant frequency of vibration of a tensioned steel wire is dependent on the strain or tension in the wire. This fundamental dependency is utilized in a variety of configurations for the measurement of strain, load, force, pressure, temperature, and tilt.

Vibrating wire sensors are well known for their long-term stability. The advantage of vibrating wire sensorsover more conventional types lies mainly in the sensor output, which is a frequency rather than a voltage.

Frequencies can be transmitted over long (>2000 m)cables without appreciable degradation of the signal caused by variations in cable resistance, which can arise from water penetration, temperature fluctuations, contact resistance or leakage to ground. This factor, coupled with the elegance and ruggedness of Geokon, Inc. designs results in sensors which exhibit excellent long-term stability and which are ideally suited for long-term measurements in adverse environments.

Caveat Emptor’

Imitation is the best form of flattery, so we at Geokon should feel extremely flattered by the number and variety of companies that have chosen to copy the elegant designs of our products. It is quite amazing the extent to which our imitators have gone in order to match the appearance of their products to Geokon’s.

So while we marvel at, and applaud the efforts of, our competitors in helping us spread the good word about the use of sensors based on vibrating wire technology, we find it necessary to voice a ‘Caveat Emptor’ that appearances aren’t everything and that beauty may be only skin deep.

Over 30 years of experience at Geokon has inevitably honed our products to a high degree of reliability, a reliability which is dependent on subtle improvements and refinements that are not readily visible to the naked eye.

This is where quality starts and ends.

Applications

Instruments manufactured by Geokon are used primarily for monitoring the safety and stability of civil and mining structures such as earth dams, concrete dams, tunnels, mine openings, foundations, piles, embankments, retaining walls, slopes, subway systems, underground powerhouses, bridges, culverts, pipelines, shafts, slurry wall excavations, braced excavations, tiebacks, nuclear waste repositories, ground water remediation schemes and the like.

Geokon manufactures a complete line of geotechnical instruments including extensometers, piezometers,strain gages, crackmeters, jointmeters, load cells,settlement sensors, pressure cells, inclinometers and dataloggers and many other custom items made to order.

The products section of this web site provides a brief description of Geokon’s standard product lines. Individual brochures with additional information and further details, available as downloadable PDF files, accompany each product. If these products do not meet your needs, members of our experienced staff are ready to work with you to produce custom instrumentation for special applications. Call or write for more information and find out why Geokon has a reputation for high quality, reliability and service unequaled in the industry.

Quality

Geokon, Inc. is committed to providing its customers with outstanding products and services that meet or exceed quality expectations. As a result, Geokon, Inc. has been awarded ISO 9001:2008 registration from both ANSI•ANAB, USA and UKAS of Great Britain.

Geokon’s calibration program complies with, and is audited to, the ANSI/NCSL Z540-1 Calibration Laboratory and Measuring and Test Equipment General Requirements. In addition, all primary calibration standards are traceable to the United States Department of Commerce, National Institutes of Standards and Technology (NIST), in Washington, DC, and are calibrated by laboratories with ISO/IEC 17025 accreditation.

Geokon, Inc is a qualified supplier for US Nuclear Facilities in accordance with the American Society of Mechanical Engineers (ASME)/Nuclear Quality Assurance (NQA)-1, Quality Assurance Program Requirements.

Geokon’s entire product line has achieved the Russian GOST certification for product safety and the GOST metrological certification.