FieldengInstrumentation & Controls
Sensor Accuracy Error Budget
Combine independent error terms by RSS or worst-case absolute sum. RSS is not always the right spec method.
Instrumentation & Controls
Combine independent error terms by RSS or worst-case absolute sum. RSS is not always the right spec method.
App id: INST-38. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
RSS = √Σ Eᵢ²; worst-case = Σ |Eᵢ|Inputs
| Name | Unit |
|---|---|
| Method (0=RSS, 1=sum) (optional) | 1 |
| Error 1 | % |
| Error 2 (optional) | % |
| Error 3 (optional) | % |
| Error 4 (optional) | % |
| Error 5 (optional) | % |
| Error 6 (optional) | % |
Outputs
| Name | Unit |
|---|---|
| Combined error (hero result) | % |
Diagnose
This tool does not attach diagnose observations.
Assumptions
- Leave unused terms blank. Default method is RSS. Terms are dimensionless (enter % of span or of reading consistently).
Provenance
- Pick RSS only when terms are independent and the specification allows it. Worst-case is conservative.