A strain gauge has a GF (Gauge factor) = 2.03 and R = 120 ohms and is made from wire with a fractional change in resistance per degree of 0.0034/℃ at 25℃. The dissipation factor is given as PD = 25mW/℃. What is the maximum current that can be placed through the strain gauge to keep self-heating errors below 1u (1 micro) of strain?

A strain gauge has a GF (Gauge factor) = 2.03 and R = 120 ohms and is made from wire with a fractional change in resistance per degree of 0.0034/℃ at 25℃. The dissipation factor is given as PD = 25mW/℃. What is the maximum current that can be placed through the strain gauge to keep self-heating errors below 1u (1 micro) of strain?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

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