Gage Bonding: Installing Gages with Option P2

Gage Bonding

To preclude damage to the cable insulation, the adhesive selected should be curable at a temperature of no more than +180 deg F (+80 deg C).

Lift the gage end of the gage/tape assembly at a shallow angle to the specimen surface (less than 45 degrees) until the gage is no longer in contact with the surface. Continue lifting the tape until it is free from the surface about 1/2 in (13 mm) beyond the gage. Tuck the loose end of the tape under itself and apply the adhesive according to the instructions provided. Since Option P2 leadwires are attached directly to the gage, a cushion may be used over the grid area to promote uniform pressure over the entire gage area. With M-Bond 200 , a folded gauze sponge can be used as a cushion. However, the thumb by itself is sufficient when placed transverse to the leadwires. When M-Bond AE-10 / 15 is used, the silicone gum pad should be placed over the gage grids and butted to the ends of the leadwire on the solder tabs. M-Bond 600 and 610 should not be used on gages with Option P2 because their elevated curing temperatures are excessive for the vinyl cable insulation.

After the adhesive has cured, remove the transfer tape by pulling it back directly over itself, peeling it slowly and steadily off the surface. An application of M-LINE Rosin Solvent will quickly soften the mastic and ease tape removal.

Page 4 of 6