The effects of dirt and swirling flow on multipath ultrasonic gas flow meters

Conference · Sat Dec 30 23:00:00 EST 1995

OSTI ID:443553

Jong, S de; Dam, A M ^[1]

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1. N.V. Nederlandse Gasunie, Groningen (Netherlands)

Gasunie has performed tests on two types of installation effects on multipath ultrasonic gas meters with a diameter of 500 mm. The effect of mildly wet flows was studied by injecting liquids in the gas flow and monitoring changes in signal and noise levels and in the meter error. It was concluded that small amounts of liquids do not affect the meter error, and that the meter itself can detect if signal to noise ratios are distorted so much that proper functioning is no longer possible. The effect of swirling flow was studied for two types of meter with significantly differing path geometries: a 4-path criss-cross arrangement and a 5-path reflection arrangement. For swirl angles up to 10 degrees, the effect on the meter errors was up to 0.8% and 0.4% resp.

• OSTI ID: 443553
• Report Number(s): CONF-950391--
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ERRORS
FLOWMETERS
FLUCTUATIONS
GAS FLOW
INSTALLATION
METERING
MONITORING
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
NOISE
PERFORMANCE
PIPELINES
RELIABILITY
ULTRASONIC WAVES
VELOCITY
VORTEX FLOW