Error as a percentage of span
Compare an actual reading with a reference.
Inputs
Calculations run in your browser. Your input values are not submitted or saved.
Results
- Signed error
- 0.4
- Signed error / span
- 0.4 %
No acceptance criterion is selected. Use traceable reference readings and the approved tolerance for your application.
Formula & guidance
error % span = 100 × (actual − reference) ÷ (upper − lower)
No acceptance criterion is selected. Use traceable reference readings and the approved tolerance for your application.
Change the example inputs and check each field’s units. Use equipment datasheets and applicable project standards for final decisions. Results do not establish Canadian electrical-code compliance or certify a design.
Technical reference and further reading ↗Apply this result to your project
Bring the reference readings and the approved tolerance to a loop-check review. The percentage result does not itself decide whether an instrument passes.
Discuss the result with AranVision