IEEE C57.104 · IEC 60599 · Duval Triangle

Read the gases.

Turn an oil lab report into a clear transformer diagnosis. Upload the lab results. DGAIQ reads them, twelve engineering tools analyse them, and AI writes the recommendations, prepares the report and answers your questions.

Try the sample transformer
12AI and engineering tools on every upload
15gas and oil results read automatically
5fault methods, side by side
1 clickto a signed-off PDF report

Before → after

A lab sheet shouldn't be a puzzle.

Drag to compare. Same report, same numbers, now with a diagnosis.

Lab report (illustration)DGAIQ

Read

Your report, read for you.

Drop a PDF, Word file, Excel sheet or a phone photo of the lab sheet. DGAIQ reads the nine gases, the oil tests, the dates and the transformer details right in your browser, and keeps the original text beside them so you can check each one. A spreadsheet with many transformers opens as a list.

Diagnose

Every method, one verdict.

Duval Triangle 1, IEC 60599 ratios, Rogers, Doernenburg and Key Gas run together. When they agree, you see it at once; when they don't, you see why.

And more

All the AI tools.

Sample 2026-06-18 · TX-02

Quiet when healthy. Loud when it's not.

The verdict moves from Normal to Act now as the evidence builds: limits crossed, gases rising, methods agreeing on a fault.

How it works

No setup. No lab software. Just the report.

1

Upload the report

PDF, Word or photo, up to 15 MB. The file is opened in your browser.

2

Check the values

Every reading sits next to the text it came from. Fix anything before it counts.

3

Sign and send

Pick the recommendations, add your comments and download the PDF for the client.

FAQ

Good questions.

Which reports can it read?

Lab PDFs, Word .docx files, Excel/CSV sheets (one or many samples) and photos or scans of the results sheet, read with text recognition. If a value can't be read, you type it into the table.

Where does my report go?

The file is opened and read inside your browser and is not uploaded or stored. To write the summary, recommendations and answers, only the extracted readings and results are sent to our AI provider (Anthropic); it deletes them within 30 days and does not use them for training. If a report layout is not recognised, its text is sent so the AI can read it.

Which standards does it follow?

IEEE C57.104-2019 status limits (with 2008 TDCG conditions), IEC 60599 ratios, Duval Triangle 1, Rogers and Doernenburg ratios, IEC 60422 oil quality, and the Chendong and De Pablo 2-FAL models for paper ageing.

Does it replace an engineer?

No. It gathers the evidence and suggests next steps; a qualified engineer reviews the result and signs the report. Confirm abnormal results with a repeat sample before major action.

Can I compare with an older sample?

Yes. Add the previous sample and its date to see the change and rate per day for every gas and for TDCG.

Know what's happening inside.

Upload the latest oil report and get the assessment in minutes.

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Summary

Written instantly from the readings and analysis on this page

Get a plain-language executive summary of this transformer: the verdict, the key findings and what to do next. You can include it in the PDF report.

?

Ask DGAIQ

Instant answers from this transformer’s data. Nothing leaves your browser.

Gas levels against IEEE C57.104-2019

01

Bring the report

Upload the laboratory report, then check every extracted value against the original.

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Add the lab report or drop a file herePDF, Word, Excel/CSV or photo · up to 15 MB
Showing a sample transformer. Upload a client report to replace it, or type readings in the table below.
Text read from the file (for checking)

Transformer and sample

02

Check the readings and see the verdict

Values in ppm (µL/L). Enter “<1” for results below the detection limit.

Dissolved gases

GasCurrentPreviousChangeRate /dayIEEE 2019

Oil quality and paper ageing

TestResultUnitIEC 60422

Fault diagnosis by method

MethodResultMeaning

03

Diagnostics

The evidence behind each conclusion.

Duval Triangle 1

Gases against IEEE C57.104-2019 limits

| 90th percentile┃ 95th percentile

Gas ratios

RatioValueReading

Cellulose and ageing

04

Recommendations and report

Choose what goes in the report, add your own comments, then download.

Recommendations

Export

The report below updates as you edit. Download it as a PDF to send to the client.