Fieldeng
Instrumentation & Controls

Analog Scaling Error

Actual minus expected, as current, percent of span, and percent of reading.

Instrumentation & Controls

Actual minus expected, as current, percent of span, and percent of reading.

App id: INST-07. 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

Error = actual − expected

Inputs

NameUnit
Measured signal (camera)mA
Expected signalmA
Span (default 16 mA) (optional)mA

Outputs

NameUnit
Absolute error (hero result)mA
Percent of span%
Percent of reading%

Diagnose

This tool does not attach diagnose observations.

Assumptions

  • Leave span blank for a 16 mA (4–20 mA) current span.

Provenance

  • % of reading is omitted (non-finite) when expected is zero.

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