Geokon Inc. of USA has been the world leader in high-quality geotechnical instruments design and manufacturing since it was founded in 1979. Geokon Instruments (Beijing) Co., Ltd. was founded in 1998 as a wholly-owned enterprises of the Geokon Inc., which specialized in design, production and sale of security monitoring instruments and automatic monitoring and control systems, the integration projects and the technological consultation and services as well and passed "ISO 9001 Quality Management System Certificate ", " China Gauge Manufacturing Certificate (CMC) " and "China Industrial Production Permit".
Geokon instruments are divided into two large series of Vibrating Wires (VW) and Fiber Bragg Gratings (FBG), widely used for monitoring security and stability of hydraulic structures, tunnels, bridges, railways, highways and other projects,such as stress,strain,displacement, load,pressure,temperature,tilt, settlement and data acquisition, etc.
As a member of China dam security monitoring committee, Geokon Instruments (Beijing) Co., Ltd. is one of the most prestigious companies majored in hydropower project security monitoring and the largest supplier of water conservancy and hydropower security monitoring instruments in China. The assumed projects in succession includes Three Gorges Water Control Project, Xiaolangdi Water Control Project, Longtan Hydropower Station, Ertan Hydropower Station, Shanxi Wanjiazhai Yellow River Diversion Project, Fengtan Hydropower Station Expansion Project, Shuibuya Power Station, Wujiang Hydropower Series Stations, DaduHe River Hydropower Series Stations, Xixiayuan Anti-Regulation Reservoir, Xiaowan Hydropower Station, Xiluodu hydropower Station, Xiangjiaba Hydropower Station, Laxiwa Hydropower Station, Jinping I, Jinping II, Guandi Hydropower Station. In such dozens of projects, Geokon Instruments (Beijing) Co., Ltd. was responsible for supply, installation and test of dam monitoring instruments. Especially in the national key South-to-North water diversion center line project, lots of Geokon instruments were used. Besides, Geokon Instruments (Beijing) Co., Ltd. supplied Zhejiang Tianhuangping Pumped Storage Power Station, Ming Tombs Pumped Storage Power Station, Shandong Tai’an Pumped Storage Power Station, Zhejiang Tongbai Pumped Storage Power Station, Henan Nanyang Huilong Pumped Storage Power Station, Anhui Langyashan Pumped Storage Power Station, Jiangsu Yixing Pumped Storage Power Station, Henan Baoquan Pumped Storage Power Station, Shanxi Xilongchi Pumped Storage Power Station, Hebei Zhanghewan Pumped Storage Power Station and Guangdong Huizhou Pumped Storage Power Station with security monitoring instruments. Geokon instruments succeeded in some national key bridges such as Jiangsu Sutong Bridge, Jiangsu Jiangyin Bridge, Anqing Yangtze River River Highway Bridge, Yangtze River River Bridge II, Changsha Dongting Lake Bridge, Guangdong Fochen Bridge, Shenyang Republican Cable-stayed Bridge and Zhuhai Qi'ao Bridge, and in other key projects such as Beijing Subway, Shanghai Subway, Huangshan Highway, Yuanmo Highway, Hewu Highway, Tonghuang Highway, Hurongxi Highway and Qinshan Nuclear Power Station as well.
Relied on the high quality of products and scientific management, Geokon Instruments (Beijing) Co., Ltd. is making better and better progresses and achievements with the world construction growing. It was honorably granted "The Capital Green Landscaping Garden Enterprise" in 2003, "The Beijing Credit Enterprise in 2003 and 2004 respectively", and "The Beijing Taxation Credit A Grade Enterprise" in 2003. And it was honored "The Advanced Enterprise" by Beijing General Union in 2004 and "The Top Foreign Capital Enterprise" by the government of Fangshan District in continuous 4 years from 2002 to 2005. It has been granted "The High-tech Enterprise" by Beijing Science and Technology Committee in continuous 6 years from 2002 to 2007. And it was honored "The Beijing Taxation Credit A Grade Enterprise" again in 2007.
With the principle of "Client Supreme, Quality Oriented, Service Considerate, and Credit Honest", our all staff and nationwide agents and technological service providers will continuously make every effort to supply the clients with the best products and the most considerate
Our Technology
The operational principle of VW sensors comes from a tensioned steel wire of which the resonant vibration frequency is proportional to the strain or tension in the wire. This fundamental relationship is utilized in a variety of configurations for the measurement of strain, load, force, pressure, temperature, and tilt.
The VW sensors are superior to conventional types, for their outputs are not voltages but frequencies transmittable 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 designs results in VW sensors which exhibit excellent long-term stability and which are ideally suited for long-term measurements in adverse environments.
The FBG sensors are the most important inventions in the 1990s. FBG is an optical unit, with good reliability, high precision and strong resistances to electromagnetic interference and lightning. A piece of optical fiber may form quasi-distributed measurement system after connecting several different wavelength FBG sensors. FBG sensors are very suitable for dynamic measurement.
Out Products
Geokon instruments are mainly used for monitoring security and stability of industrial and civil structures, such as dam, tunnel, mine, foundation, pile, retaining wall, slope, landslide, subway, underground powerhouse, bridge, culvert, pipeline, vertical pit, slurry wall, braced tunnel, cross beam, nuclear waste warehouse, underground piping and other similar structures.
All Geokon geotechnical instruments are available, including thermometer, convergence meter, stress meter, strain gage, rebar strain meter, piezometer, crack meter, displacement meter, load cell, settlement sensor, earth pressure cell, concrete stress cell, incline meter, datalogger and other customized products.