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💧 Drip & Micro Irrigation Evaluation Tool v1.0.0
Field Emission Uniformity following the Code of Practice Section 4.1
Save everything entered on all tabs, plus the results, to a CSV file on your computer. Load it later to fill the tool back in and recalculate.
Each zone has its own emitter flow test (Code 4.1.13). Test the cleanest, an average and the dirtiest areas: 16 emitters for clean and average, 28 for dirty. Collect one emitter per container for at least 5 minutes or 250 mL.
Optional: repeat the clean-area test with lateral pressure changed by about 20%, using the same emitters in the same order. This determines the discharge exponent x and coefficient Kd (Eqns 23, 24).
📄 Load Flow Volumes from CSV
Columns: Zone number, Emitter number, Volume (mL). Use zone 0 for the adjusted pressure test.
Pressure at the inlet, middle and end of two laterals in each block: the first lateral after the pressure regulation point and the last on the manifold. At least 3 blocks (18 readings); 6 or more blocks on larger or undulating systems.
📄 Load Pressures from CSV
Columns: Block, Lateral, Inlet (kPa), Middle (kPa), End (kPa).
What is calculated
- Pressure Emission Uniformity (PEU) from pressure-derived flows (Eqns 22, 29)
- Emitter Emission Uniformity (EEU) from manufacturing and field defect variation (Eqns 37, 41)
- Drainage factor (Eqn 38) and zone factor from zone applied depths (Eqns 39, 45)
- Field Emission Uniformity combining all four (Clemmens-Solomon, Eqn 27), rated to ASAE EP405.1