Overview

Determine Internal Pipe Pressure Using External Flow Measurements

The Portasonic® CALCULATOR is the first device designed to estimate internal pipe pressure using non‑intrusive, externally measured flow data. It provides a way to assess internal operating conditions without opening the pipe or interrupting the system.

Developed to work together with the Portasonic® PLUS Ultrasonic Flow Meter, it complements one of the industry’s most widely used clamp‑on flow measurement tools. The Portasonic® PLUS is relied on across many maintenance, inspection, and monitoring tasks, making it a natural partner for pressure estimation.

As a companion instrument, the Portasonic® CALCULATOR applies an empirical formula based on fluid‑dynamics principles to predict internal pressure with an accuracy of approximately 5%. Its calculations draw on an extensive dataset covering more than 19 liquid types and 23 commonly used pipe materials, enabling reliable predictions across many practical scenarios.

Why Monitor Internal Pipe Pressure?

Maintaining safe pressure levels is essential for ensuring the integrity of pipe systems. Excessive pressure can result in pipe rupture, equipment damage, operational downtime, and hazards for personnel. Pressure also influences the lifespan and performance of pumps, valves, and connected infrastructure.
Understanding internal pressure therefore helps confirm that the system is running safely, efficiently, and according to expected flow conditions.

Features

• Fast and straightforward operation using an intuitive touchscreen tablet

• Ability to store measurement records for traceability

• Export data via USB or email for reporting and documentation

• Filter recorded measurements by date or by pipe for easier data management

Benefits

• Accounts for temperature and pipe wall roughness to improve calculation accuracy

• Works seamlessly with the Portasonic® PLUS to validate flow rates and speeds

• Helps determine whether internal pipe pressure remains within safe operating limits