Gage Wiring

Relatively high displacements occur with high-elongation strain measurements, suggesting the use of an external terminal strip. The strain gage should be wired to the terminal strip with a small-diameter, single-conductor wire no larger than 30 AWG (0.25 mm diameter) as shown on the following page. Drafting tape (Micro-Measurements M-LINE PDT-1 ) applied over the gage during soldering is recommended to restrict the flow of solder to the tab ends.

Adequate strain relief loops, as shown in the illustration on the following page, are of particular importance in high-elongation measurements. Note also that the leads attached to the strain gage tabs approach in a direction 90 degrees from the maximum principal strain axis.

After soldering, all tape and soldering flux should be removed with several brush applications of rosin solvent (Micro-Measurements M-LINE RSK-1 ).

Page 9 of 17