How to Read Hold-Test Results
Sign-off rules — same as the result card
Full rules for reading Passed / Not passed, ↑ ↓ — hold direction, delta colours, and temperature on your hold test.
6 min readWitness / QA · Engineer · Technician
Procedure first
PressureTrend helps you read a hold test; it does not replace your written procedure, client specification, or code acceptance rules.
When the app and your procedure disagree, follow the procedure.
Overall result
Passed or Not passed combines pressure change against your criteria %, optional minimum test pressure, and delta trend (all red delta checkpoints can fail the test).
Falling hold: pass when drop ≤ criteria %. Rising hold: pass when rise ≤ criteria %. Stable hold: pass when |change| ≤ criteria %.
Hold direction (↑ ↓ —)
↑ next to the result means net pressure rose during the window; ↓ means it fell; — means the change was very small.
A rising hold is common when the system warms. The app shows rise %, not a misleading negative drop %.
Check temperature and your band limits before signing off a warming hold.
Delta checkpoint colours
Green: this step does not move against hold direction (no rise on ↓ holds, no fall on ↑ holds) and |Δ| is not steeper than the previous step (flattening or stable rate of change).
Red: the interval rose on a falling hold, fell on a rising hold, or the |Δ| magnitude grew compared with the step before.
A red delta checkpoint can fail the test on any hold direction.
Temperature
When the logger exports temperature, use the temperature trace beside the chart.
Cooling can look like a leak; warming can hide a small drop or explain a rising hold.
Optional temperature-adjusted drop changes pass/fail only if you enable it and your procedure allows that estimate.
Test pressure
If allow below test pressure is off, pressure anywhere in the window must stay at or above the nominal test pressure.
That check is separate from drop % or rise %.