Emerson DCR25S Annubar Primary Flow Element Diamond II

The Emerson Rosemount DCR25S Annubar Diamond II primary flow element delivers accurate differential-pressure flow measurement in large-diameter process piping by averaging pressure across multiple sensing points along the flow path. This DCR25S model is designed for a 5.47-inch pipe and supports differential pressure up to 933 inH2O, enabling reliable flow calculation while minimizing pressure loss compared with traditional flow metering methods. The Diamond II Annubar family features a textured front surface optimized for high Reynolds number service, such as gas and steam, to promote a stable, repeatable flow profile at the sensor slots. As the primary element in Rosemount Annubar differential-pressure flow meters, the DCR25S is installed in-line with a differential-pressure transmitter connected upstream and downstream, providing an averaged DP signal that translates into flow over a broad operating range. This combination is well-suited for industries including oil and gas, chemical processing, power, and water/wastewater, where large-diameter lines and a low-to-moderate pressure drop are desirable. The DCR25S Diamond II element is a fixed, non-moving component designed for long service life in challenging process environments, delivering consistent performance when paired with proper installation practices and adequate straight-pipe run.