The manufacturing of ultrasonic gas flow meters

Drenthen, Jan G; Boer, G. de

doi:10.1016/s0955-5986(01)00003-6

Cited by 31 publications

(22 citation statements)

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“…The possibility of dry-calibration exists where the effect of geometry and profile factor can be minimised or eliminated. Drenthen and de Boer (2001) have demonstrated that geometry and profile factor combined uncertainty is of the order of 0.36 percent in the case of their ultrasonic gas flowmeter design.…”

Section: Spool Piece Transit-time Flowmetersmentioning

confidence: 99%

“…It is, also, possible that measurement of path lengths could be achieved by geometrical measurement with a special tool (Drenthen and de Boer, 2001), or independent electronic means of path length measurement, while the meter is in line. Such a probe could also provide information on pipe deposits and pipe dimensions.…”

Section: Spool Piece Transit-time Flowmetersmentioning

confidence: 99%

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In situcalibration

2005

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Purpose -To examine the possibilities for dry calibration or in situ calibration for flowmeters in the field. Design/methodology/approach -Reviews history and current situation with regard to in situ/dry calibration of flowmeters. Its acceptability for modern flowmeters is considered. Various options are considered to achieve dry calibration or in situ calibration. The possibility of action at a distance via the internet, for example, naturally follows from these developments. Findings -The paper concludes that this development is likely to be of importance to manufacturers. It will need to be addressed by certification authorities. Originality/value -The concepts will reduce the cost of calibration and the discussion should be of value to research workers, industry and government.

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Section: Spool Piece Transit-time Flowmetersmentioning

confidence: 99%

Section: Spool Piece Transit-time Flowmetersmentioning

confidence: 99%

In situcalibration

2005

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“…One objective, however, of manufacture and assembly to close tolerances would be to avoid the need for calibration (cf. reference [29]). …”

Section: Control Of Variationmentioning

confidence: 99%

Variation in flowmeter manufacture: Some observations and lessons

Baker

2004

Proceedings of the Institution of Mechanical Engineers, Part B:

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This paper discusses two concepts essential to high-quality manufacture, in particular, of flowmeters. The first is the understanding, control and reduction of variation so that high quality in the product can be achieved. The second is consideration of the need for good housekeeping and how this is an essential for documentation of the meter's manufacture to allow the product to be verified through its working life and to be withdrawn if it fails to meet its specification. The theoretical basis is reviewed and examples are then given from a particular industrial groupflowmeter manufacturers-for evidence of the effects of manufacturing variation, its control and the resultant high quality that can be achieved. This is done by reviewing relevant theoretical and experimental work on various flowmeters so as to understand the causes of variation. Lessons can be learned from this relating to design for production, manufacturing, alternatives to calibration and the importance of software. This is illustrated by a simplified case study of one type of flowmeter, the electromagnetic flowmeter. This leads to conclusions on the possible lessons for companies on design, variation/quality and measuring on line, verification and customer communications.

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“…Compared with the conventional flowmeter, the ultrasonic flowmeter has a better performance since it has no moving parts, no pressure loss, wide measuring range, excellent repeatability, and high precision [1], and it is widely used in industrial production [2,3], especially for large diameter pipes and larger flows [4,5]. The ultrasonic flowmeter is mainly comprised of an ultrasonic transducer installed on the measuring pipe and the related sensors of temperature and pressure [6].…”

Section: Introductionmentioning

confidence: 99%

The Flow Field Analysis and Flow Calculation of Ultrasonic Flowmeter Based on the Fluent Software

Ling

Sun

Liu

et al. 2014

Abstract and Applied Analysis

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We can build the three-dimensional structure model based on the Gambit software and achieve the distribution of flow field in the pipe and reflux flow condition at the position of transducer in regard to the real position of transducer according to the Fluent software. Under the framework, define the reflux length based on the distance of reflux along the channel and evaluate the effect of reflux on flow field. Then we can correct the power factor with the transmission speed difference method in the ideal condition and obtain the matching expression of power correction factor according to the practice model. In the end, analyze the simulation experience and produce the sample table based on the proposed model. The comparative analysis of test results and simulation results demonstrates the validity and feasibility of the proposed simulation method. The research in this paper will lay a foundation for further study on the optimization of ultrasonic flowmeter, enhance the measurement precision, and extend the application of engineering.

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The manufacturing of ultrasonic gas flow meters

Cited by 31 publications

References 0 publications

In situcalibration

In situcalibration

Variation in flowmeter manufacture: Some observations and lessons

The Flow Field Analysis and Flow Calculation of Ultrasonic Flowmeter Based on the Fluent Software

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