BQ250 is a Karma alloy foil based series strain gage, supplied on a special phenolic-soaked paper backing. This backing ensures extended temperature range of -269…+250°C along with perfect adhesion properties. Also, due to the flexible backing, BQ250 series gages can be installed on surfaces with complex geometries (small radius curves, thin tubes, etc.). After installation, a proper humidity and moisture protection must be ensured for this series gages, e.g., using our special protective glues.