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Zero-drift and zero-shift in a strain gage Wheatstone Bridge circuit can arise from a number of sources, including the gage installation itself. The following checklist gives the recommended inspection steps immediately after the completion of lead wire attachment, but prior to the application of protective coatings.
After Leadwire Attachment
Most gage installations will exhibit none of these faults if the installation techniques outlined in Micro-Measurements instructional materials and training programs are followed. However, field applications made in harsh environments, or even laboratory installations with difficult gage locations on the test specimen, warrant special attention. If you have any questions concerning your particular applications, our Applications Engineering Department will be pleased to assist you in establishing a program for verifying the integrity of strain gage installations. They can be reached at (919) 365-3800 by telephone or by email at firstname.lastname@example.org.
Jim Johnson, Technical Sales Manager Micro-Measurements®, a Vishay Precision Group, Inc. (VPG) brand
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