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From computeraidedsolutions.com
To monitor ground movement during excavation of a new underground railway tunnel, to provide a data history and to issue alarms for excessive movement. A number of dataTaker DT515 data loggers were installed along the tunnel, and connected together using the inbuilt dataTaker networking features. Each dataTaker monitors ground movement indicated by a series of vibrating wire strain gauges installed into the tunnel walls and ceiling. A dataTaker's Modem Manager and modem provides a telephone telemetry link between the dataTaker network underground and computers on the surface. Realtime data, stored data and alarm states are transmitted via this link. Products & Services
Wind tunnel testing services provide test facilities and technical staff for aerodynamic testing. Tests may be performed on prototype aircraft, helicopters, trains, cars, or buildings; or for research and development (R&D) purposes.
Wireless modems transmit modulated data using electromagnetic waves.
Cooling tunnels ensure controlled temperature reduction in both batch and continuous process systems. They are similar to air convention ovens, but have no heating capacity.
Geophones are small, vibration sensing instruments that are used to measure movement of the earth, machines, mines, and other applications.
IC modems enable computers to transmit data over telephone lines or via wireless signals.
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Topics of Interest
Following the automation and unmanning of coastal lighthouses, it is necessary to continuously monitor operation of the lamp and its power supply, and to raise alarms if any malfunction occurs...
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The data loggers raise alarms if operational limits are exceeded. These alarms are in turn transmitted via modem to alphanumeric pagers worn by maintenance staff. Alarms include reporting tank levels...
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Two dataTaker DT500's and two Channel Expansion Modules were installed in the center's data room. The data loggers were set up to capture and log data from a variety of sensors throughout the building...
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An open cut coal mine having a high salinity of water runoff required monitoring the quality of water in several retaining dams. The water can only be released into the local river system when it is...
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The dataTaker DT500 collects data every 10 seconds from a number of pH and temperature sensors that are permanently installed in the pretreatment plant.
The dataTaker DT500 is programmed to...
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Technical Articles
Ground Movement in Underground Rail Tunnels
- Acceleration and Vibration Sensing
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