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.

Terms of Service

Please read these Terms of Service ("Terms") carefully before using PressureTrend ("Service") at https://pressuretrend.com. By accessing or using the Service, you agree to be bound by these Terms.

Last updated: May 25, 2026

No Affiliation

PressureTrend is an independent tool and is not affiliated with, endorsed by, sponsored by, or approved by KELLER Pressure, AMETEK Crystal Engineering, or any of their affiliates.

The names "Keller", "Crystal nVision", "PressureSuite", "LOGGER 5", and similar terms are used only to describe compatibility with data exports from their devices. PressureTrend does not claim any official relationship with these companies.

Description of Service

PressureTrend is a browser-based tool that helps users visualize and analyze pressure hold test data from compatible logger exports. The Service processes data locally in your browser.

User Responsibilities

You are solely responsible for:

The accuracy and completeness of any files you import.
Any conclusions, decisions, or actions you take based on the output of the Service.
Verifying results against your own procedures, specifications, and applicable regulations.
Securing your device and any exported files (PDFs, project files, etc.).

The Service is intended as an assistance tool only. It does not replace written procedures, client specifications, industry codes, or professional engineering judgment.

Acceptable Use

You agree not to:

Use the Service for any illegal purpose.
Attempt to reverse engineer, decompile, or interfere with the Service.
Misrepresent the output of the Service as official certification without independent verification.

Disclaimer of Warranties

The Service is provided "as is" and "as available" without warranties of any kind, whether express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, and non-infringement.

We do not warrant that the Service will be uninterrupted, error-free, or that the results will meet your specific requirements.

Limitation of Liability

To the maximum extent permitted by law, PressureTrend and its owner shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits, data, or goodwill arising out of or in connection with your use of the Service.

In no event shall our total liability exceed the amount you paid for the Service in the twelve (12) months preceding the claim (or zero if you are using the free version).

Indemnification

You agree to indemnify, defend, and hold harmless PressureTrend and its owner from any claims, damages, losses, liabilities, and expenses (including reasonable attorneys’ fees) arising out of or related to your use of the Service or your violation of these Terms.

Intellectual Property

The Service, including its design, code, and documentation, is protected by copyright and other intellectual property laws. Third-party trademarks are used only to indicate format compatibility.

Changes to Terms

We may update these Terms at any time. The updated version will be posted on this page with a new "Last updated" date. Your continued use of the Service after changes are published constitutes acceptance of the new Terms.

Governing Law

These Terms shall be governed by and construed in accordance with the laws of Norway, without regard to its conflict of law principles. Any disputes shall be subject to the exclusive jurisdiction of the courts of Norway, subject to any mandatory consumer protection laws in your country of residence.

Severability

If any provision of these Terms is found to be invalid or unenforceable, the remaining provisions shall remain in full force and effect.

Entire Agreement

These Terms constitute the entire agreement between you and PressureTrend regarding the Service and supersede all prior agreements.

Contact

For questions or legal notices regarding these Terms, please contact:

legal@pressuretrend.com