Moisture protection for an electromechanical transducer

Details Moisture protection for an electromechanical transducer Moisture protection for an electromechanical transducer

2007-04-03

2007-04-03

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified load or strain transmission device from specimen...

C073S862632, C073S862637

Reexamination Certificate

active

11040015

ABSTRACT:
A multilayered coating is disclosed as a protective coating against moisture penetration for strain gauges that are or can be installed on a deformable body of a force-measuring cell. A strain gauge has a strain-sensitive electrical resistor track and connector electrodes for contacting the resistor track arranged on a carrier substrate, with a multilayered coating covering at least a part of the carrier substrate and/or of the resistor track and/or of the connector electrodes as a protective coating against moisture penetration. The multilayered coating is composed of an alternating sequence of a polymer layer and a barrier layer and consists of at least three thin individual layers. In the case where a multilayered coating is applied to a strain gauge that is already installed on the deformable body of a force-measuring cell, the multilayered coating can in addition also cover a part of the deformable body.

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