Friday, October 11, 2019
DISPLACEMENT MEASUREMENT METHODS
LINEAR DISPLACEMENT MECHANICAL:-
1. steel rule: range 0to 1000mm, accuracy. (+.1,-.1) to (+.3 to-.3mm)
2.micrometer- range 0 to 600mm accuracy + 0.002 to-0.002 mm.
3. Callipers-range 0to 1000mm
+0.02,-0.02 to+0.06to-0.06
4. Dial gauge- accuracy +0.005,-0.005 to.02
Used for small displacements, pointer moving across a scale as output.
5.sigma comparator- pointer moving across a scale as output
6.johnson comparator- pointer moving across a scale as output
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