Description
Compare observed pump volume with a nominal per-cycle product.
Hydroponic records distinguish reservoir volumes, catch rates, media volume, nominal pump displacement and chemical reference labels. A top-up share can use final rather than initial volume, while a pH difference is not a chemical-dose calculation. Supplied parameters do not establish water quality, crop suitability or hydraulic performance.
Compare observed pump volume with a nominal per-cycle product.
When to use this tool
Use Hydroponic Pump Displacement Check when you already have nominalVolumePerCycle, observedCycles, observedVolume and need to compare observed pump volume with a nominal per-cycle product.
How to use the tool and how it works
- Enter nominalVolumePerCycle, observedCycles, observedVolume. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read nominalTotalVolume, observedMinusNominal. Use the output convention below.
Require nominalVolumePerCycle/observedVolume>=0 and nonnegative safe whole cycle count; nominal total=per-cycle*cycles and gap=observed-nominal.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| nominalVolumePerCycle | Nominal Volume Per Cycle | Required. Finite number; minimum 0. |
| observedCycles | Observed Cycles | Required. Safe integer; minimum 0. |
| observedVolume | Observed Volume | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| nominalTotalVolume | Nominal Total Volume | Required. Finite number. |
| observedMinusNominal | Observed Minus Nominal | Required. Finite number. |
{
"input": {
"nominalVolumePerCycle": 2,
"observedCycles": 10,
"observedVolume": 19
},
"output": {
"nominalTotalVolume": 20,
"observedMinusNominal": -1
}
}Limitations and assumptions
- No pump, actual cycles, calibration validity, head losses or suitable flow is assessed.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated water and flow observations, actual reservoir geometry and the complete intended chemical or hydraulic model. Preserve concentration, temperature-reference and time bases; local offsets and volume shares do not choose nutrient, pH or irrigation adjustments.
References
Similar or alternative tools
- Hydroponic pH Reference Residual
Calculate a recorded pH value's signed reference difference.
- Hydroponic Root Zone Label
Qualify explicit root-zone wording by source.