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High Temperature Capacitive Strain Gages are used at temperatures to 1500° for short or long time periods.
The unique design of this gage eliminates the problems that limit the performance of conventional high-temperature strain-measuring devices. As a result, it can be used as a safety tool for monitoring strains in critical equipment components under static conditions at temperatures to 1500°F for either short times or during the entire life of the equipment. |
between room temperature and 1500°F. The gage measures chord strain at the surface of the specimen and virtually compensates for bending.
The gage consists of two variable capacitors connected as a half bridge which cancels the unwanted effects of temperature and pressure and produces excellent linearity. This configuration also provides a system free of instrumentation lead problems and has the potential for measuring strains of either sign and large magnitude at a constant sensitivity. Temperature compensation is achieved with a compensating link fabricated from a material whose thermal characteristics closely match those of the specimen. Thermocouples are provided for both the gage and specimen to provide data for computing corrections between the gage and specimen surface during rapid temperature transients.
The capacitive strain gage is used with HPI's signal conditioning system which is designed specifically to generate excitation for the gage and process output from the gage to a readable DC voltage that can be directly correlated to micro inches/in. This highly reliable system is finding increased application in refineries and chemical processing plants, nuclear and fossil-fueled power plants, and wherever high temperature strains require long-term monitoring.
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| sales@hitecprodcom | Tel: 978-772-6963 | Fax: 978-772-6966 |
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