Lumistrel is intelligent P&ID software that runs in your browser. Every symbol you place becomes an engineering record, so the instrument lists, the design checks and a live operator screen all come from the one drawing.
The sheets are stills from the recordings below. The light moving over them is illustration.
Draw
ISA-5.1 symbols, dragged from the library and connected port to port. Lines route themselves and every loop numbers itself.
Check
The instrument index, I/O, line, equipment and valve lists, read from what you drew, and checked the way a reviewer would.
Operate
Built from the P&ID in one click, with faceplates, alarms and trends over a live hydraulic simulation.
One model
The lists are read from the drawing and the operator screen is built from it, so the instrument index never disagrees with the P&ID. Every deliverable leaves from the same model.
The same plant, drawn from an empty sheet, checked, and run. Each recording is the shipped editor, driven by a script with the pointer you see.
Draw
Drag equipment from the symbol library, drop in complete control loops, and connect it all port to port. Lines route themselves, tags are read against the ISA-5.1 letter tables, and every loop numbers itself.
Check
The instrument index, I/O, line, equipment and valve lists are built from what you drew and edited in place. A rule engine flags what a reviewer would — a vessel with no relief, an incomplete record — before anyone else has to.
Operate
One click turns the P&ID into an operator screen. Start the pumps from their faceplates, put loops in manual, and watch pressure, temperature and level respond in a live simulation — for design review and operator training.
Every line here is in the editor you open. Work still being built is named in one place only, the last question of the FAQ.
Each group’s stack lights the layers it works on: the sheet, the lists, the operator screen.
Needs a Lumistrel account.
A solve that will not converge, a pump starved at its suction, a part of the plant with no pressure to work from: Lumistrel reports each one instead of showing a plausible number. In engineering, a confident wrong answer costs more than an honest gap.
Nothing to install. Chrome, Edge, Firefox or Safari on a laptop or desktop.
Install it from the browser as an app, and drawing, checking and export carry on without a connection.
Work autosaves in your browser. Save .pnid files to your own disk, or to your account’s cloud projects.
Produce the P&ID and every list that hangs off it from one model, so the instrument index never disagrees with the drawing.
Hand over tagged P&IDs, line lists and DEXPI files with every package, checked before they leave the shop.
Turn the unit’s P&ID into a training simulator, and practise start-ups and alarm response away from the live control system.
Teach ISA symbols, tagging and control loops on real engineering software, with the plant running in front of the class.
Designed with these engineering standards and ecosystems in mind. Lumistrel has not been formally assessed or certified against any of them. Symbols are authored independently as original SVG from public-domain geometric conventions; this project is not affiliated with or endorsed by the International Society of Automation.
A few to start with; every question, answered has a page of its own. Something not covered there? Email contact@lumistrel.com.
No. Lumistrel runs in a desktop browser — Chrome, Edge, Firefox or Safari. You can also install it as an app from the browser, and it keeps working offline.
Your work autosaves in your browser. You can save a drawing as a .pnid file on your own machine, or to your account’s cloud projects. Your drawings are always yours.
Yes, through DXF: every sheet exports as a layered DXF that AutoCAD opens. DWG files cannot be imported directly — save one as DXF and load it as an underlay to redraw over.
No. It implements conventions from ISA-5.1, ISA-5.4, ISA-20, ISA-101 and ISA-18.2, but it has not been formally assessed or certified against any of them, and it is not affiliated with the International Society of Automation.
No. It represents process behaviour for engineering study and operator training. It is not a validated process simulator and does not replace a plant’s DCS or safety system.
You can read about it on any device, but drawing a P&ID needs a mouse and a desktop-sized window, so the editor is built for laptops and desktops.
In development: fluid property model, DEXPI conformance hardening and custom HMI widgets from imported SVG. Further out, on the roadmap: automationML exchange, MTP / modular automation, APIs and plugins, real-time co-editing, SIS and cause & effect matrices, management of change and in-app DWG import.
Open the editor, draw a tank, a pump and a control loop, then build the operator screen and start the simulation. It takes a few minutes, in the browser you are using now.