MasterRecipe: sim-pressurized-drain-m1

Pressurized drain test on sim-cell/mix-tank-1. Use this recipe to exercise the pressurized-drain phase and the tank's N₂ blanket PID loop, the only pid-loop control module in the reference plant. Good for demonstrating closed-loop regulatory control inside a batch step.

Where to find it

HMI endpoint → Batch Execution → + New → select sim-pressurized-drain-m1.

What you see when it runs

Element	Meaning
Procedure	Running from batch start
Phase detail	Strict linear walk: isolate → pressurize → pressure_hold → open_drain → draining → close_drain → depressurize → confirm_safe
PID activity	pressure_controller.SP is written to drain_pressure during pressurize and 0 during depressurize — watch PV follow SP

HMI screenshot pending

An annotated capture of this recipe's draining step with the PID loop in Auto will be added here.

Batch sizing

Field	Value
Nominal	300 L
Product	Pressurized Drain Test (Simulated)
Product ID	SIM-PDRAIN-001
Version	1.0.0

Target units

ProcessCell: sim-cell

Capability	Unit
mixing	mix-tank-1

Procedure

#	Step	Phase template	Description
1	pressure-test	tank-pressure-test	Pressurize tank and verify no leaks
2	pressurized-drain	tank-pressurized-drain	Pressurize and drain under N2 blanket

How it works

1. pressure-test runs the standard tank leak check.
2. pressurized-drain isolates the inlet, writes drain_pressure to the PID setpoint, waits for pressure to stabilize, opens the outlet, and tracks the load-cell weight to decide drain completion. Depressurization and a final confirm-safe step run before complete.

Try it

1. HMI endpoint → Batch Execution → + New → sim-pressurized-drain-m1 → Start
2. Open the N2-blanket-pressure PID faceplate and watch SP, PV, CV evolve as the phase drives the setpoint
3. Open Data endpoint → Trends on pressure_sensor.PV, pressure_controller.SP, weight_sensor.PV, and outlet_valve.CMD on one view