Abstract: Thermal shift in Wheatstone bridge-type transducers is reduced by providing a diaphragm of semiconductor material accepting formation of strain gages therein having a uniform temperature coefficient of resistance therethrough. That diaphragm is supported in a mechanically floating condition, such as by interposing a cushion of compliant material between the diaphragm and a support which is subject to mechanical strains. An amount of unbalance required for balancing the strain gages on the diaphragm is determined. One of these strain gages is provided with a series balance equal to one-half of that determined amount, while an adjacent one of the strain gages is provided with a shunt balance equivalent to one-half of that determined amount.

Abstract: Methods and apparatus for interconnecting a transducer body with a fluid-receiving transducer dome provide the transducer body with a radial shoulder, where an annular tightening member, rotatable relative to the transducer body, is also provided. An axial bias between the tightening member and the radial shoulder resiliently restrains the tightening member and the transducer body against movement away from each other. A groove for receiving a fastening member projecting either from the tightening member or the dome is provided at the dome or the tightening member. This groove is delimited with a stepped rigid tongue for retaining the fastening member therein. The dome and the transducer body are biased into fluid-tight engagement with the axial bias acting between the radial shoulder and the annular tightening member and acting on the dome through the projecting fastening member and rigid tongue.