Daniel 3418 eight-path ultrasonic gas flowmeter

Emerson has introduced the Daniel 3418 eight-path ultrasonic gas flowmeter, which delivers accurate flow measurement in natural gas custody transfer applications with reduced upstream piping requirements and without flow conditioning. The Daniel 3418 compensates for flow distortions that result from pipe bends, shorter straight runs or smaller design footprints, allowing it to operate in more design configurations without sacrificing accuracy and long-term performance.

The 3418 has passed all perturbation tests for OIML R-137 Accuracy Class 0.5 with only five pipe diameters in front of the meter and without a flow conditioner. It features eight interlocked direct chordal paths, positioned as two British Gas path layouts where the second is the mirror image of the first, allowing the meter to cancel out asymmetrical velocity effects. This design enables the meter to measure flow with greater resolution and accurately calculate swirl, reducing the need for flow conditioning and long upstream piping configurations.

As a part of the Daniel Gas Ultrasonic product line, the 3418 features the ability to calculate standard flow and directly integrate with temperature and pressure transmitters, gas chromatographs and flow computers while providing real-time meter and process diagnostics. The 3418 uses Emerson’s proprietary MeterLink diagnostic software with specific enhancements designed to mimic the look and feel of the original Daniel four-path gas ultrasonic meter interface.