The Armstrong International VERIS Verabar flow sensor, developed from aerospace technology, provides unsurpassed accuracy and reliability. With its solid one-piece construction and bullet shape, the Verabar makes flow measurement clog-free and precise.

When fluid impacts the sensor, it creates a high-pressure zone in front of the sensor. As the fluid accelerates around the sensor, a low-pressure zone is created to the sides and rear. Multiple sensing ports are positioned in these high- and low-pressure zones, and an averaged differential pressure is measured, providing a representative measurement of the true flow profile.

Clogging can occur in low-pressure ports located in or near the partial vacuum at the rear of conventional sensors. The Verabar design uniquely locates the low-pressure ports on the sides of the sensor, forward of the fluid separation point and turbulent wake area. This virtually eliminates clogging and produces an extremely stable signal, reducing noise and improving control loop performance.

Verified accuracy eliminates the need for calibration tests to characterize coefficients, with empirical test data from independent laboratories published in the VERIS Verabar Flow Test Report (VED-100). Ready to install, the Verabar can be ordered with a manifold, transmitter, local indicating meter, flow computer, and/or recorder. Complete installation is possible in less than an hour. Accuracy is ±1% of flow rate, up to ±0.5% if calibrated, with ±0.10% repeatability over the entire flow range.