FieldengInstrumentation & Controls
Level Transmitter Scaling
Linear 4–20 mA level. Optional tank height gives fill fraction and remaining headroom. Not a tank-volume geometry tool.
Instrumentation & ControlsFluid & Pressure
Linear 4–20 mA level. Optional tank height gives fill fraction and remaining headroom. Not a tank-volume geometry tool.
App id: INST-28. 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
level = L + (I − 4)/16 × (H − L)Inputs
| Name | Unit |
|---|---|
| Loop current (camera) | mA |
| Lower range (LRV) | m |
| Upper range (URV) | m |
| Tank height (optional) | m |
| Live zero (optional) | mA |
| Live full scale (optional) | mA |
Outputs
| Name | Unit |
|---|---|
| Level (hero result) | m |
| Signal span | % |
| Fill | % |
| Remaining headroom | m |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
span fraction < 0 or span fraction > 1 | Outside configured span | caution |
Assumptions
- Without tank height, fill follows the signal span fraction.
Provenance
- Linear level only. Non-linear tank volume is a different tool.