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A new multi-path ultrasonic flow meter for gas

Technical Report:

Abstract

Offshore metering stations based on orifice plates are bulky and require much space. Accordingly, the platform costs are considerable, and can be significantly lowered if the size of the metering station is reduced. Ultrasonic transit time multi-path meters will allow compact metering stations to be constructed due to increased flow meter capacity and reduced installation lengths. In addition these meters offer improved flow meter performance and potential for simpler maintenance procedures. A new multi-path flow meter for gas has been developed by Christian Michelsen Research in Norway. The flow meter has undergone testing on natural gas at K-lab, Norway. The flow meter (FMU 700) will be manufactured by Fluenta AS. The FMU 700 features new technical solutions such as titanium housed ultrasonic transducers, automatic gain control, on-line measurement of transit time delay in cables and electronics, and software pulse detection. The deviations between the K-lab sonic-nozzle reference mass metering system and the FMU 700 are less than 0.8% at gas velocities between 1 and 8 m/s. These results were achieved with 10D straight inlet pipe downstream of a 90{sup o} bend. Tests were also performed with the FMU 700 installed only 5D downstream a 90{sup o} bend. At gas velocities  More>>
Authors:
Lygre, A; Folkestad, T; [1]  Sakariassen, R; [2]  Aldal, D [3] 
  1. Christian Michelsen Research A/S, Bergen (Norway)
  2. Statoil A/S (Norway)
  3. Fluenta A/S (Norway)
Publication Date:
Oct 01, 1992
Product Type:
Technical Report
Report Number:
CMR-92-A10005
Reference Number:
SCA: 032000; 420400; PA: NW-93:005490; NTS-94:008011; EDB-94:017266; ERA-19:006117; SN: 94001129738
Resource Relation:
Other Information: PBD: Oct 1992
Subject:
03 NATURAL GAS; 42 ENGINEERING; NATURAL GAS; FLOWMETERS; ULTRASONIC WAVES; TRANSDUCERS; PIPELINES; COST; PERFORMANCE; BENCH-SCALE EXPERIMENTS; EXPERIMENTAL DATA; 032000; 420400; TRANSPORT, HANDLING, AND STORAGE; HEAT TRANSFER AND FLUID FLOW
OSTI ID:
10115182
Research Organizations:
Christian Michelsen Research A/S, Bergen (Norway)
Country of Origin:
Norway
Language:
English
Other Identifying Numbers:
Other: ON: DE94730381; TRN: NO9305490
Availability:
OSTI; NTIS
Submitting Site:
NW
Size:
19 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Lygre, A, Folkestad, T, Sakariassen, R, and Aldal, D. A new multi-path ultrasonic flow meter for gas. Norway: N. p., 1992. Web.
Lygre, A, Folkestad, T, Sakariassen, R, & Aldal, D. A new multi-path ultrasonic flow meter for gas. Norway.
Lygre, A, Folkestad, T, Sakariassen, R, and Aldal, D. 1992. "A new multi-path ultrasonic flow meter for gas." Norway.
@misc{etde_10115182,
title = {A new multi-path ultrasonic flow meter for gas}
author = {Lygre, A, Folkestad, T, Sakariassen, R, and Aldal, D}
abstractNote = {Offshore metering stations based on orifice plates are bulky and require much space. Accordingly, the platform costs are considerable, and can be significantly lowered if the size of the metering station is reduced. Ultrasonic transit time multi-path meters will allow compact metering stations to be constructed due to increased flow meter capacity and reduced installation lengths. In addition these meters offer improved flow meter performance and potential for simpler maintenance procedures. A new multi-path flow meter for gas has been developed by Christian Michelsen Research in Norway. The flow meter has undergone testing on natural gas at K-lab, Norway. The flow meter (FMU 700) will be manufactured by Fluenta AS. The FMU 700 features new technical solutions such as titanium housed ultrasonic transducers, automatic gain control, on-line measurement of transit time delay in cables and electronics, and software pulse detection. The deviations between the K-lab sonic-nozzle reference mass metering system and the FMU 700 are less than 0.8% at gas velocities between 1 and 8 m/s. These results were achieved with 10D straight inlet pipe downstream of a 90{sup o} bend. Tests were also performed with the FMU 700 installed only 5D downstream a 90{sup o} bend. At gas velocities between 2 and 8 m/s the measurement uncertainty is not changed despite the reduction in upstream straight pipe length from 10D to 5D. The observed deviations were independent of the test pressure varying from 55 to 100 bar. The test results show that it is quite feasible to build a very compact and light metering station compared to conventional solutions and at the same time comply with the requirements set to fiscal metering stations. 7 refs., 14 figs., 1 tab.}
place = {Norway}
year = {1992}
month = {Oct}
}