Is PressureTrend free to use?

Yes. The core tool is currently free for everyone.

Does PressureTrend upload my pressure data or test results?

Nothing is sent to any external server for analysis. All file parsing, calculations, chart rendering, and report generation runs entirely in your web browser. Beyond loading the page itself, only aggregated usage analytics are collected—no pressure data, test results, or file contents are ever transmitted. No data upload: Your pressure logs and results never leave your browser. Works well offline: While the page stays open, import, analysis, and PDF export continue without an internet connection. Session persistence: Your work is saved locally. You can refresh the page and continue where you left off. You control your exports: Only you decide when to generate a PDF report or save a project file.

Can I use PressureTrend offline?

While the page stays open, import, analysis, and PDF export continue without an internet connection.

Do I need to install any software?

No installation is required. PressureTrend runs directly in your web browser after you export CSV or Excel from your logger software.

Is my work saved if I refresh the page?

Your work is saved locally. You can refresh the page and continue where you left off.

Which file formats are supported?

Keller: LOGGER_5, LEO Record, and PressureSuite exports (CSV · Excel). Auto-detects native Keller layouts on CSV and Excel. Import setup picks channel and time source when several are present. Crystal nVision: Standard nVision CSV and Excel exports (CSV · Excel). Pressure time series with run metadata on CSV and Excel. Import setup confirms gauge serial and calibration when the file lists several. Wonderware: Trend / historian CSV exports (CSV). Trend exports with timestamp and tag columns. Pressure columns are discovered automatically; import setup confirms the right ones when several are present. Other tabular exports: Flexible column fallback (CSV · Excel). When the file is not a known native layout, detection tries flexible time and pressure columns so many logger exports still import without a dedicated parser.

My file is not recognised automatically. What should I do?

Confirm time calibration and test start before analysis. If your file contains multiple time sources, gauges, or pressure channels, pick the correct ones—standard Keller and nVision exports rarely need extra choices. If your logger export is not recognised well, email contact@pressuretrend.com with your device and export format—we improve parser support for CSV and Excel from real user files without accessing your data.

Can I import multiple files at the same time?

Yes. You can queue and work with up to 10 files per session.

Which Keller and Crystal devices are supported?

Keller: LOGGER_5, LEO Record, and PressureSuite. Pressure time series with run metadata on CSV and Excel. Import setup confirms gauge serial and calibration when the file lists several. When the file is not a known native layout, detection tries flexible time and pressure columns so many logger exports still import without a dedicated parser.

How does the pass/fail logic work?

Passed or Not passed combines pressure change against your criteria %, optional minimum test pressure, and delta trend (on falling holds and stable holds with a net loss). Falling hold: pass when drop ≤ criteria %. Rising hold: pass when rise ≤ criteria %. Stable hold: pass when |change| ≤ criteria %. If allow below test pressure is off, pressure anywhere in the window must stay at or above the nominal test pressure. That check is separate from drop % or rise %. Start-to-end change vs criteria %; minimum test pressure can fail independently. Direction ↓ / ↑ / — when |change| is below 0.05% of start pressure. Delta colours show flattening vs steepening; red deltas can fail ↓ holds and — holds with net loss.

Can I adjust the pass/fail criteria?

Set start and end of your hold test on the chart; set nominal test pressure, criteria %, and 2–8 delta checkpoints in the test controls beside it. Optional minimum floor pressure can fail the test independently.

How do I export my results?

Review pass/fail, start-to-end change, delta trends, and temperature insight in the workspace. Export a PDF via your browser print dialog or save a JSON project file to continue later.

What are the coloured deltas in the results?

Green: this step’s |Δ| is not steeper than the previous step (flattening or stable rate of change). Red: the interval change grew compared with the step before. On falling holds—and stable holds with a net pressure loss—a red delta can fail the test. On rising holds, red deltas are advisory only (Δ advisory).

How is drop % calculated on a hold test?

Passed or Not passed combines pressure change against your criteria %, optional minimum test pressure, and delta trend (on falling holds and stable holds with a net loss). Falling hold: pass when drop ≤ criteria %. Rising hold: pass when rise ≤ criteria %. Stable hold: pass when |change| ≤ criteria %. ↑ next to the result means net pressure rose during the window; ↓ means it fell; — means the change was very small. A rising hold is common when the system warms. The app shows rise %, not a misleading negative drop %. Check temperature and your band limits before signing off a warming hold.

Does API 16C allow 5% pressure variation during a hold?

API 16C hydrostatic hold acceptance commonly requires no visible external leakage and that pressure during the hold does not vary by more than 5% or 500 psi, whichever is less. Your job is governed by the approved procedure and the API edition cited on your test pack—verify exact wording there. In PressureTrend, set criteria % in the test controls (for example 5%) and evaluate drop or rise over your hold window; when the dual limit applies, also check the absolute 500 psi cap against start pressure before sign-off.

Is PressureTrend a replacement for CrystalControl or PressureSuite?

No. Those tools export the data from your logger. PressureTrend analyses the export, helps you read pass/fail, and builds a hold-test report.

Where is my data processed?

All file parsing, calculations, chart rendering, and report generation runs entirely in your web browser. Beyond loading the page itself, only aggregated usage analytics are collected—no pressure data, test results, or file contents are ever transmitted.

Who can see my pressure test data?

Nothing is sent to any external server for analysis. Your pressure logs and results never leave your browser.

Is PressureTrend suitable for offshore use?

While the page stays open, import, analysis, and PDF export continue without an internet connection. Local browser processing suits restricted connectivity and sensitive environments.

My logger export doesn't work well. Can you help?

We actively improve support for different logger formats. Reach out with your device and export format—we improve parsers from real user files without accessing your data.

Where can I find more help?

Start-to-end change vs criteria %; minimum test pressure can fail independently. Pass/fail, hold direction (↑ ↓ —), delta colours, temperature, and test-pressure checks—the same rules as the result card. See the full guide for hold direction, delta colours, temperature, and test-pressure checks. Logger workflow guides live on the Guides page and in Resources below.

PDF Report Export

Export — print dialog & filenames

How PDF export works (print dialog, Landscape, filenames) and comparison sessions.

5 min readTechnician · Engineer

How PDF export works

PressureTrend does not render PDFs on a server. Click PDF in the workspace to open the system print dialog on the same tab, then choose Save as PDF. Export runs entirely in your browser—no extra hosting cost and no file upload.

Steps

Complete import setup and set your test window so pass/fail and the chart reflect the hold you are signing off.
Fill report fields (procedure, description, test date, and related rows) in the report panel.
Click PDF and wait for the report to finish preparing.
In the print dialog, choose Save as PDF and Landscape orientation for the chart and report layout.
Review the preview; adjust margins in the dialog if your browser allows.

Chart in the report

The export captures the current chart view (including the test window) for the active test. For comparison sessions with multiple tests, you can export the current test only, separate PDFs per test, or one combined PDF—choose from the PDF menu when more than one test is loaded.

Optional PDF with data points adds appendix tables (full imported series for visible channels). This supplements—not replaces—your logger’s native export where procedure requires it.

Suggested filenames

Chrome and Edge often pre-fill Save as PDF from the page title. PressureTrend builds a suggested name from report metadata in this order, space-separated:

Test date (YYYY.MM.DD)
Test procedure
Description
Test pressure (e.g. 345 bar)
Duration (e.g. 15 min)
Criteria (e.g. 2%)

Example filename

2025.03.31 ICP60099191 WHST 345 bar 15 min 2%. Empty fields are omitted. Characters not allowed in filenames are replaced with hyphens.

Project JSON export uses the same basename pattern so saved files match your test pack naming.

Other ways to save work

Export project JSON includes pressure series and full session state for another browser.
Session template exports report text and settings without series—pair with the same CSV/Excel file on another machine.
Test history in the browser stores report metadata references without full pressure data.

Troubleshooting

Print dialog did not open: wait until preparing finishes, then try PDF again.
Blank chart in PDF: wait for the chart image to finish loading before saving.
Wrong test in a comparison session: switch the active test in the header before exporting.

Related guides

Open PressureTrend

← Resources on the landing page