TECHNICAL NOTE 001REVISION CONTROL / 2026

A DOCUMENT-TO-EVIDENCE WORKFLOW

Find the change.
Keep the evidence.

DatasheetDelta compares two technical document revisions and turns supported parameter differences into a traceable engineering change register.

Compare two revisions ↘

!Decision support, not engineering approval. Every finding requires source verification.

FIG. 01 / REVISION OVERLAYX 04.21 / Y 09.08

ILLUSTRATIVE DATANOT A CUSTOMER RECORD

DD / 01

COMPARE 01TRACE 02REVIEW 03A CHANGE IS A QUESTION, NOT A VERDICT.

THE PRINCIPLE

A revision history tells you that a document changed. An evidence register shows what the system could extract, where it found it, and what still needs a human decision.

02 / THE WORKBENCH

Run a comparison.

Bring the earlier and later documents together. Review the extracted fields before carrying the register into your engineering process.

Checking analysis service…

INVESTIGATION CONSOLE DD–WORKSPACEINPUT / 01—02

INPUT PAIR / REQUIRED

Choose the source files

◇ Files processed in request memory

PROCESS / EXTRACT → NORMALIZE → CLASSIFY → HAND OFFHUMAN REVIEW REQUIRED

Review boundary A candidate discrepancy is not a confirmed defect, safety issue, compliance breach or financial impact. Verify the source documents and obtain qualified engineering approval.

03 / THE METHOD

From document
to decision input.

One narrow workflow, with the evidence kept visible at every step.

01⌕

Extract

Read supported label/value structures from each document and retain available source locations.

DOCUMENT → FIELDS

02⇄

Normalize

Convert supported physical units to canonical units while preserving original values in the report.

VALUES → COMPARABLE DATA

03Δ

Classify

Separate changed, added, removed, unchanged and unit-mismatch findings.

DATA → REGISTER

04↗

Hand off

Search, filter and export the findings for review by an accountable engineering owner.

PARAMETERREV AREV BSTATUS

Maximum pressure10 bar12 barCHANGED

Rated voltage24 V DC24 V DCSAME

EnclosureIP 65IP 67CHANGED

Sensor output—4–20 mAADDED

REFERENCE SOURCE / ROW 04REVISED SOURCE / ROW 04

04 / WHAT A FINDING CARRIES

Not just a redline.
A trail to inspect.

Each register entry is designed to retain the before and after values, source references and comparison explanation. That gives a reviewer a starting point they can challenge—not a verdict they must trust.

Original extracted values
Source row, sheet, page or paragraph where available
Unit and comparison explanation
Warnings and unresolved extraction limits
Portable JSON and CSV outputs

05 / SCOPE & LIMITATIONS

Precision includes
knowing the limits.

DatasheetDelta is a document evidence tool. It is not a substitute for technical interpretation or formal change control.

01Scanned documents

Scanned PDFs need OCR. OCR is not included.

02Complex layouts

Multi-column pages, merged tables, graphics, images and footnotes may be missed.

03Repeated labels

Duplicate normalized labels generate warnings. Inspect every source occurrence.

04Engineering judgment

No automated materiality, safety, compliance, contract or suitability decision.

05Operational controls

No authentication, persistent audit log, sign-off or approval workflow.

DATASHEETDELTA / ENGINEERING REVISION INTELLIGENCE

Make every change
traceable.

Go to the workbench ↑