Professional Sizing made Simple

CSE PROSaR – The test-winning software

Sizing safety devices.
Accurate. Fast. Online.

Experience live and try for free
CSE PROSaR - Test winner 01/2026

“CSE PROSaR has quickly become an integral part of our operations. In particular, the ability to quickly validate existing sizing data is a valuable asset for us as a manufacturer.”

Marc Juckschat, Product Manager STRIKO

“PROSaR stands out for its standard-compliant and detailed calculations, offering a much more realistic approach than basic methods such as those based on AD2000. Even for more complex calculations, PROSaR remains an efficient and reliable tool that is also constantly being refined. For us, this represents clear added value in our day-to-day engineering work..”

André Schultze, REMBE® GmbH Safety+Control

 

Experience live and try for free

Try CSE PROSaR for 24 hours free of charge and with no obligation. Simply sign up using the form. For long-term use, we offer individual, group, and enterprise licenses starting at €125.00 per month..1

CSE PROSaR Live Webinars (Webex)

New dates starting in September 2026 will be announced shortly
“Quick Sizing” |  “Two-phase flow” | Regulatory Compliance
Sizing with CSE PROSaR Standard and Advanced

Please register using the form.

More dates

Privacy information: By using this form, you agree that your data will be stored for the purpose of processing your request until further notice and used for communication with CSE PROSaR. For security reasons, only company email addresses are permitted. Private addresses, e.g. from GMX or Web.de, will not be accepted.

CSE PROSaR Product Databases

CSE-PROSaR – Manufacturers

CSE PROSaR Standard Edition

Precise calculation of safety valves and bursting discs for single-phase flows in accordance with DIN EN ISO 4126 or API 520.

Try it free for 24 hours
CSE PROSaR Results

Fast sizing

Review of existing calculations

Validation of inputs and results

Suggestion for suitable device

For plant engineers, HSE/safety engineers, plant design. Ideal for process modifications and basic design.

CSE PROSaR Advanced Edition

Sizing of safety valves and bursting discs for single-phase and two-phase flows in accordance with DIN EN ISO 4126-10:2024 – including inlet and outlet lines.

Try it free for 24 hours
CSE PROSaR Advanced – Selector

Conformity assessment DIN EN ISO 4126-10:2024

Mass flow for two-phase flows

Real gas calculation, e.g., for H2, refrigerants

Detailed industry report

For process safety experts in the chemical industry and plant engineering, as well as in high-pressure gas applications and refrigerants.

HNE-CSE, the method of ISO 4125-10:2024

Developed by the sizing experts at the CSE Center of Safety Excellence

Implemented as intuitive software with the highest calculation precision

CSE PROSaR Industry Report

CSE PROSaR Industry Report

All relevant dimensioning data

Dischargeable mass flow

Pressure losses in pipes

Conformity assessment

Export as a PDF in short or long format.

CSE PROSaR – Secure SSL

*  New customer discounts depending on the agreed contract term, e.g., 10% discount for a 24-month term, up to 20% for a 36-month term.
1  Price example: CSE PROSaR Standard Edition, single-user license, $125.00 per month with annual payment.