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OperationTemplate: cip-conductivity-rinse-op

A final CIP rinse with conductivity endpoint verification: fills with WFI, agitates, measures residual conductivity against the acceptance limit, and drains. Use this operation as the final rinse of a CIP cycle where release of the vessel to the next batch depends on a quantitative cleanliness measurement. The conductivity check confirms chemical residue has been removed to the validated CIP acceptance criteria before the blowdown step.

Where to find it

System endpoint → Equipment Library → Operations → select cip-conductivity-rinse-op.

What you see when it runs

Inside the procedural tree, this operation appears as a four-step node:

Element Meaning
Operation node final-rinse (the conventional name in cip-vessel-cleaning)
Phase children fill → agitate → conductivity-check → drain
Verdict message When conductivity-check runs, a PASSED or FAILED operator message is recorded against the batch — check the message log

HMI screenshot pending

An annotated capture of a running cip-conductivity-rinse-op operation on the conductivity-check phase will be added here.

Phases

# Step Phase template Description
1 fill cip-fill Fill vessel with WFI
2 agitate cip-agitate Agitate to dissolve residual contamination
3 conductivity-check cip-conductivity-check Measure residual conductivity against acceptance limit
4 drain cip-drain Drain rinse water

Capability: mixing.

Parameters

Parameter Type Unit Range Default Required
fill_level REAL L 50-450 350 yes
agitate_speed REAL % 20-100 50 yes
agitate_duration TIME — 15s-10m 5m yes
conductivity_limit REAL µS/cm 1.0-100.0 15.0 yes
drain_level REAL L 0-50 5 no

TIME parameters take duration strings ("45s", "1m30s", "5m"), not bare numbers.

How it works

Linear four-phase sequence where the third phase records the cleanliness verdict:

  1. fill, agitate — prepare the rinse volume.
  2. conductivity-check reads the conductivity sensor and compares it against conductivity_limit. The phase always completes. It records a PASSED or FAILED operator message and the operation advances to drain either way. Acting on a failure (re-running a cip-rinse-op call, holding the batch) is an operator / recipe decision. There is no automatic gate.
  3. drain empties the rinse.

Used in

Try it

  1. HMI endpoint → Batch Execution → + New → sim-cip-cycle-m1 → Start
  2. Expand the procedural tree and wait for final-rinse to activate
  3. Click into conductivity-check to see the live conductivity reading against the acceptance limit
  4. Open Data endpoint → Trends on conductivity_sensor.PV to see the rinse decay toward the limit