Real-time PID controller interaction
Adjustable proportional, integral, and derivative gains with live level response.
PiLevel is a fully developed real-time dynamic simulator of level control in a vertical tank. Built by PiControl Solutions, PiLevel is process control simulation software that models a single-loop tank level system, complete with inlet flow, an outlet control valve, and a DCS-style faceplate, so engineers and students can practice level-loop tuning without touching a real vessel.
Level control behaves differently from the flow, temperature, and pressure loops most engineers meet first. A tank is a non-self-regulating, integrating process: leave the outlet valve fixed with an inlet/outlet mismatch and the level ramps continuously rather than settling on its own. PiLevel gives users a safe place to feel that behavior, experiment with tank geometry and valve response, and build correct tuning intuition before they touch a live PID controller on a plant tank, vessel, or drum.
PiLevel simulates the real-time dynamics of a vertical-tank level loop so engineers and students can tune PID controllers, observe closed-loop response, and build correct intuition for integrating processes. PiLevel runs on standard Windows hardware, requires no DCS hardware, and closely mirrors the operations of an actual industrial Distributed Control System, so the skills transfer directly to real plant tanks, vessels, and drums.
Adjustable proportional, integral, and derivative gains with live level response.
Models a non-self-regulating tank level, not a self-regulating textbook shortcut.
Tune tank geometry, inlet flow, and outlet valve response to match real equipment.
Inlet flow swings, valve stiction, and measurement noise for realistic practice.
Setpoint, PV trend, and MV trend in a layout familiar to plant operators.
Runs standalone on Windows, no network connection or DCS hardware required.
Industrial plants use PiLevel to train process engineers on level-loop dynamics before they tune live tanks, vessels, and drums. Because level is an integrating process, engineers who first practice on PiLevel arrive at the real loop already comfortable with ramping response, valve saturation, and the tuning approach that keeps a level loop stable within industrial process control systems.
Engineering colleges and universities use PiLevel to teach integrating-process dynamics and PID tuning fundamentals in process control and unit design courses within the chemical engineering domain. PiLevel replaces static textbook problems with hands-on practice, letting students experiment with process conditions and observe the impact in real time.
PiLevel's feature set is built for one outcome: engineers and students who understand integrating-process behavior before they tune a real tank level loop.
Simulates a vertical-tank level loop in real time, with the level responding as an accumulation of inlet and outlet flow.
Integrating loops behave nothing like self-regulating flow or pressure loops. PiLevel is where engineers first feel the difference.
Set tank diameter and working volume to model bench-scale or plant-scale vessels.
Matches simulated dynamics to real plant tanks, vessels, and drums for site-specific training.
Adjustable inlet flow and control-valve response, including realistic valve saturation.
Valve saturation and windup are where inexperienced tuning attempts fail on real level loops.
Inlet flow swings, valve stiction, and measurement noise on demand.
Trains engineers to keep a level loop stable under the upsets a real plant actually produces.
Setpoint, PV trend, MV trend, and PID gain entry in an operator-familiar layout.
Removes the interface learning curve, so engineers focus on tuning, not navigation.
Runs standalone on standard Windows hardware, no DCS hardware or network required.
Deploys instantly in a classroom, training room, or engineer's laptop with no infrastructure.
Most PID training, textbook and simulator alike, is built around self-regulating processes: a flow or pressure loop that settles at a new steady state once the controller output stabilizes. A tank level does not behave that way. Level is a non-self-regulating, integrating process: hold the outlet valve at a fixed position with any imbalance between inlet and outlet flow, and the level ramps continuously rather than settling on its own. Engineers who train only on self-regulating loops carry the wrong intuition into their first level-loop tuning attempt, and level loops sit behind some of the most consequential upsets in a plant, from tank overflow to pump cavitation on a low level.
A textbook PID exercise typically models a first-order-plus-dead-time process that settles at steady state. It rarely captures the ramping, non-self-regulating response of an actual tank, so the tuning intuition it builds does not transfer.
A lecture on integrating processes transfers terminology, not skill. An engineer who can define an integrating process on paper can still tune a level loop into a slow oscillation, because that judgment comes from closed-loop practice, not lecture comprehension.
Practicing level tuning on a live tank risks overflow, low-level trips, and downstream equipment damage. Plants would prefer the learning curve, and the occasional bad tuning attempt, to happen somewhere else first.
PiLevel removes the structural problem: a true integrating-process response in real time, adjustable tank and valve dynamics, and no production tank at risk. It gives engineers and students the specific intuition a level loop demands, before they tune the real thing.
PiLevel is one of PiControl's family of single-loop unit-operation simulators, each modeling the real-time dynamics of one classic control loop engineers meet on every plant floor.
Where PiLevel trains on a slow, integrating loop, PiFlow trains on the fast, self-regulating flow loop most engineers tune first, letting users feel the contrast in dynamics side by side.
PiTemp simulates a temperature-control loop with realistic thermal lag, complementing PiLevel's tank-level dynamics for a fuller picture of single-loop process control behavior.
PiDeltaP models a differential-pressure control loop, rounding out the set of unit-operation loops engineers practice before tuning production equipment.
Engineers train on PiLevel across every sector PiControl serves — each runs different tanks, vessels, and drums, and PiLevel's adjustable tank geometry reproduces the loops their own plant runs.
PiLevel is deployed in industrial plants and engineering colleges worldwide, giving engineers and students a full-blown, real-time way to practice level control before they touch a live tank. Read more in our customer success stories.
Request the PiLevel installer and licensing details for your plant or department.
See PiLevel run in real time on a vertical tank level loop. A PiControl engineer will demonstrate the simulator on loop dynamics relevant to your plant or curriculum, and map out a training path for your team.