SAVI LOOPIQ

Smarter loops. Safer plants.

Tune every control loop.Understand every decision.

LoopIQ turns process models and bump-test evidence into explainable PID recommendations, response analysis, robustness checks, and engineering-ready reports.

Complete a free demo tune Start 7-day Pro trial Review validation evidence →

✓ Published tuning methods✓ Visible robustness evidence✓ No automatic controller writeback

LLoop Analysis

● Read only

ProcessFOPDTExample model

TuningSIMCPublished method

RobustnessMs 1.61Within target

Loop responseSP · PV · recommendation

Overshoot2.3%Settling time42 sModel fit0.96

See the actual product

Tune a loop before you sign up

This is LoopIQ's real public demo tuner, not a screenshot. Change the process model, choose a published tuning rule, and review the recommended gains and numerical robustness. The demo accepts no plant files and never writes to a controller.

1. Define a safe example model

Use a known FOPDT model. This public demo never accepts plant files, stores data, or writes to a controller.

Process gain KpTime constant τ (s)Dead time θ (s)

2. Choose a published tuning rule

3. Review the recommendation

5.000

Ti (s)

8.000

Td (s)

0.000

1.609

1.045

GM (dB)

9.844

PM (°)

58.349

One engineering workflow, end to end

LoopIQ is designed to take an engineer from process information to a recommendation they can inspect and understand.

STEP 1

Enter process information

Use a known FOPDT/SOPDT model or, in Pro, import a bump-test CSV for fitting.

STEP 2

Select a tuning method

Compare published rules such as SIMC, IMC, Lambda, Ziegler-Nichols, and Cohen-Coon.

STEP 3

Tune

Generate controller gains from the selected model and method.

STEP 4

Analyze the response

Review time/frequency behavior and robustness metrics such as Ms, Mt, gain margin, and phase margin.

STEP 5

Understand the result

Use the AI Instructor and validation evidence to understand why a recommendation behaves the way it does.

More than a PID calculator

From gains to engineering understanding

A basic calculator can stop at Kc, Ti, and Td. LoopIQ carries the same tuning decision into robustness analysis, response visualization, diagnostics, DCS/PLC formatting, saved engineering evidence, and guided explanation.

Review validation evidence →

AI Instructor example

“Why is this SIMC recommendation less aggressive?”

The Instructor is built to combine the current process model, selected tuning rule, recommended gains, and robustness metrics with approved technical reference material. It can then explain the trade-off in the context of that loop instead of returning a generic definition. If live AI reasoning is unavailable, LoopIQ falls back to validated reference material and the current loop state rather than fabricating an answer.

Built for the loops engineers see every day

These are common engineering contexts, not pre-certified plant templates. LoopIQ helps you analyze the model and evidence you provide.

Flow

Fast process behavior, measurement noise, valve behavior, and stiction can all matter.

Pressure

Compare speed, dead time, stability margins, and the effect of more or less aggressive tuning.

Temperature

Explore slower thermal dynamics and dead-time-dominant processes before changing a real controller.

Level

Use LoopIQ to reason about process dynamics and tuning trade-offs before applying gains in the field.

Technical foundation

Published methods, visible validation

LoopIQ implements established tuning methods and documents their references and limitations. Its regression corpus checks cross-language implementation consistency, while independent benchmark evidence is tracked separately. That distinction is intentional: regression consistency is evidence of implementation fidelity, not a claim of plant certification.

See validation evidence Run the free demo

Free answers “does it work for me?” Pro runs the engineering workflow

The comparison below is sourced from the same plan catalog used by signup and checkout.

Explorer (Free)

Complete one real tuning workflow before you buy.

✓Free account — no card required
✓One complete browser-based demo tune with numerical robustness
✓Browse validation evidence, methodology, curriculum previews, and docs
✓Upgrade to any paid plan whenever you are ready

Complete the free demo →

Pro

$99/mo

For practicing engineers.

7-day free trial

✓Everything in Personal
✓AI Instructor — Coach + Socratic modes
✓Unlimited saved loops
✓CSV bump-test upload + auto-fit
✓Copy-for-DCS (Honeywell / DeltaV / Rockwell / Siemens)
✓Oscillation & stiction detection
✓Robustness (Ms, Mt, GM, PM) with warnings
✓PDF tuning report
✓200 Instructor questions / day
✓Priority email support

See Pro purchase options →

Who operates LoopIQ

Savi LoopIQ is operated by Savage Management Holdings Inc., based in Las Vegas, Nevada, USA.

What customers buy

Subscription software for process-control analysis, PID tuning, simulation, diagnostics, reporting, and technical training. No physical goods are sold or shipped.

Support & billing policies

Review customer service contacts, refund and dispute handling, cancellation terms, promotions, and related billing information on our Business & Billing Information page.

Built by control engineers, for control engineers

Five industry-standard tuning rules

SIMC (Skogestad), IMC (Rivera-Morari), Lambda, Ziegler-Nichols open-loop, and Cohen-Coon, with published references and explicit limitations.

Time, Bode, Nyquist — one screen

Robustness metrics update live: Ms, Mt, gain margin, phase margin. No re-simulating, no exporting to MATLAB.

AI Instructor grounded in your loop

Click "Why?" on any metric. The Instructor cites Skogestad SIMC or Aström & Hägglund and explains against your actual plant and gains — not generic textbook fluff.

50-case regression corpus

Every rule runs against a cross-language regression corpus spanning refining, chemicals, water/wastewater, pulp & paper, and power. This proves implementation consistency; independent benchmarks are tracked separately.

CSV in, gains out — read-only by design

Savi LoopIQ is an analysis and simulation tool. You import a bump-test CSV or type FOPDT parameters; you copy the recommended gains into your control system by hand. Read-only HART USB / OPC UA / PI connector foundations are in beta and customer-environment dependent — no writeback, no hardware or vendor certification.

iOS and mobile web

The same TypeScript control library powers the Savi LoopIQ iOS app. Tune loops from the field.

How data gets in and out

Savi LoopIQ is primarily a browser-based analysis and simulation tool. Read-only connector foundations for HART USB, OPC UA, and OSIsoft PI are in beta and depend on your specific customer environment — there is no writeback to a live loop and no hardware or vendor certification. Here is exactly how data flows:

Input · path 1

Type the model directly

Enter FOPDT or SOPDT parameters — process gain (kp), time constant (τ), and dead time (θ) — from your prior bump test, vendor datasheet, or field notebook. Zero setup, zero latency.

Input · path 2

Upload a bump-test CSV

Export PV/OP time-series from OSIsoft PI, Aspen IP.21, Honeywell PHD, Canary, or any historian that produces CSV. Savi LoopIQ fits the model in your browser — your data never leaves your machine.

Output

Copy for DCS / PLC

One-click formatted output for DeltaV, Foxboro I/A, Honeywell C300, Yokogawa CENTUM, ABB 800xA, Rockwell PIDE, and Siemens PCS 7 — with the correct time units and algorithm form for each. Operator types them in, or writes them from a hand-held communicator.

What Savi LoopIQ does not do

No writeback to any live loop. The read-only HART USB / OPC UA / PI connector foundations are in beta and depend on your customer environment — there is no hardware or vendor certification, and Savi LoopIQ never writes to DeltaV / Experion / CENTUM / 800xA. Loops that need certified live-plant integration should look at Control Station PlantESP or Valmet PlantTriage instead — different product, different install footprint.

Working with a site that has a historian and wants scheduled tuning audits? The read-only OPC UA / PI connector foundations are in beta — get in touch.

Simple pricing

Choose the workflow that fits your evidence, reporting and collaboration needs. Competitor pricing changes; we do not use unsupported price comparisons.

Or create a free account first, no card required →

Personal

For individual technicians and professional single-loop work.

$39/mo

or $390/yr

Choose Personal

✓5 tuning rules (SIMC, IMC, Lambda, ZN, CC)
✓Time / Bode / Nyquist plots
✓AI Instructor — Why + guided Lessons
✓Save up to 10 loops
✓Site / unit hierarchy (private)
✓20 Instructor questions / day