Flowmeter tip of the month: Ensure meter accuracy
One of the easiest ways to ensure meter accuracy is to ensure that the meter is piped properly. Attention should be paid to the required upstream and downstream pipe requirements needed to 'smooth' out the flow profile.
One of the easiest ways to ensure meter accuracy is to ensure that the meter is piped properly. Attention should be paid to the required upstream and downstream pipe requirements needed to 'smooth' out the flow profile. When laminar flow (Reynold's Number < 2,000) is achieved, there are no disruptions and the maximum velocity is in the center of the pipe. This is a desirable profile. Partially open valves or improper alignment of flange gaskets can distort the flow profile causing turbulent flow (Reynold’s Number > 4,000). This will cause errors in the meter's accuracy. Below are some guidelines on the minimum distances required to achieve the desired flow profile.
In the event that the recommended pipe lengths can't be provided, there are devices that can assist in providing a favorable profile. Such devices include perforated plates and internal pipe tabs can reduce swirl and mimic a laminar flow profile.
Content provided by Spirax Sarco, originally published in Steam News Magazine.
Case Study Database
Get more exposure for your case study by uploading it to the Plant Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.
These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.
Click here to visit the Case Study Database and upload your case study.
Annual Salary Survey
In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.
Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.