In or Out?

Classic diaphragm strain gages employ four gage grids arranged to take advantage of the unique tension/compression strain distribution on a pressure diaphragm. When these gages are bonded to the “outside” surface of the diaphragm they are typically trimmed square. However, when the gages are to be installed onto a recessed diaphragm (more common) the gages must be trimmed into a circle.

Micro-Measurements can supply either square-trimmed diaphragm gages (standard) or circular-trimmed diaphragm gages. To order circular trim add OPTION SP-70 to the gage designation. Different trim diameters, depending on the diaphragm size, are available.

jweidner's picture

Jim Weidner

Chief Applications Engineer


We've use the circular diaphragm gage successfully for many years, and have customized the SP-70 trim diameter to self-center the gage on the recessed diaphragm ID. Thanks for all the help along the way Jim!