TMB series of embedded strain gauge is used to measure the concrete internal structure of the stress of a special design. Sensitive gate material can choose Constantan or Karma alloy, the temperature self-compensation function, sensitive gate length of 80mm or 100mm, external selection close to the concrete linear expansion coefficient and hardness of the composite shell, can effectively moisture and corrosion, and can improve the sensitivity of the test. Lead the selection of the outer diameter 5.1mm, inner diameter 2mm, length 2m three-wire PVC cable, eliminating the resistance of the wire. 
 TMB series of embedded strain gauge can be designed to a 120 ohm or 350 ohm resistance.