New ASTM Data, control chart analysis manual
The 8th edition of the ASTM International Manual on Presentation of Data and Control Chart Analysis is now available.
It includes information on statistical and quality control methods, as well as recommendations for their application in various types of engineering work.
The three general objectives in gathering engineering data are included in the manual: physical constants and frequency distributions, relationship between two or more variables, and causes of observed phenomena.
Part 1 discusses frequency distributions, simple statistical measures, and the concise presentation of the essential information contained in a singles set of n observations. It also covers construction of box plots with a clearer definition of terms, as well as new sections on probability plots and transformations.
Part 2 examines the problem of expressing plus/minus limits of uncertainty for various statistical measures, together with some working rules for rounding-off observed results to an appropriate number of significant figures.
Part 3 covers the control chart method for the analysis of observational data obtained from a series of samples, and for detecting lack of statistical control of quality.
New Part 4 includes material on measurement systems analysis, process capability, and process performance. This section is included to help evaluate the measurement process before any analysis of the process is begun.
This edition is available in print (111 pp, soft cover, 8.5 by 11 in., stock no. MNL7-8TH, ISBN 978-0-8031-7016-2) and electronically (stock no. MNL7-8TH-EB, ISBN-EB 978-0-8031-8425-1).
Source: ASTM International, Box C700, West Conshohocken, PA 19428-2959.
New subsea connector, sensor
A new underwater connector and a new underwater sensor are available to the industry.
The new SpecTRON 60 penetrator connector is suited for connectivity between higher-voltage subsea umbilical cables and subsea transformers on gas compression systems. The company says its unit offers enabling technology for high-voltage subsea electrical distribution systems. It is designed to operate as part of a subsea electrical power distribution system and is currently qualified to operate in water depths to 2,000 m.
The firm's newest Matre subsea sensor—the WEPS-100—is a compact unit. The new product range promises a cost-effective, reliable, and convenient solution for subsea pressure and temperature sensors.
Source: Expro International Group PLC, Davidson House, Forbury Square, Reading, RG1 3EU, UK.
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