The Encardio-rite EDS-21V series of vibrating wire strain gages are designed to measure large strains upto 5000 micro-strains.
Model EDS-21V-E embedment strain gage has stainless steel flanges at either ends and is suitable for embedment directly in concrete.Any deformation in the concrete mass causes the two end blocks to move relative to one another, thus changing the tension in the wire, resulting in a corresponding change in its frequency of vibrations. It is similar to model EDS-20V-E embedment strain gage, except that it is used to measure large strains upto 5000 micro-strains. Model EDS-20V-E can measure up to 3000 micro-strains.
|Range||5000 µ strain|
|Sensitivity||2 µ strain|
|Active gage length||150 mm|
|Effective gage factor1||~ 4.051 x 10-3 µ strain/Hz2|
|Thermistor type||YSI 44005 or equivalent (3,000 Ohm at 25°C)|
|Temperature limit||-20°C to 80°C|
1 For actual value, check test certificate