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Measurement and Monitoring - Vytautis Giniotis - Bog - Momentum Press - Plusbog.dk

Measurement and Monitoring - Vytautis Giniotis - Bog - Momentum Press - Plusbog.dk

Automated machinery, such as computer numerical control machines (CNM), require constant monitoring for accuracy and precision. Thus, a correct understanding of ''metrology'' - the science of measurement - is essential to the successful running and maintenance of all automated machines, and especially CNC machines. This book presents the main methods and means for measuring and monitoring the accuracy of geometrical parameters for CNC and automated machines, including modern ''Coordinate Measuring Machines'' (CMMs). Parameters such as straightness, perpendicularity, flatness, pitch, and yaw and roll, and so on are considered, presenting different methods and means for their determination. A particular focus is given to the analysis of ISO written standards of accuracy control, terms and definitions, and methods for evaluation of the results of measurement during performance verification. This book provides readers a useful, accessible introduction, with practical examples and guidance covering: - The measurement systems and techniques for monitoring of processes, systems, and equipment - Testing of geometrical accuracy parameters and their assessment - Measurement and monitoring of scales and encoders, including standards of measurement for length and angle, circular scales , linear scales, and methods and means for vertical angle calibration. - Future trends in machine monitoring and performance verification

DKK 485.00
1

BACnet; The Global Standard for Building Automation and Control Networks - H. Michael Newman - Bog - Momentum Press - Plusbog.dk

BACnet; The Global Standard for Building Automation and Control Networks - H. Michael Newman - Bog - Momentum Press - Plusbog.dk

BACnet is a set of data communication protocols, developed jointly by ASHRAE, ANSI and ISO, for how the automatic control systems in a building--from heating, to ventilation to lighting to fire control and alarm systems - can communicate with one another and, in turn, offer a centralized way for controlling all systems in a building. The author of this book H. Michael Newman presided as the chairman of the first effort to create this standard, and has been involved with updates and improvements ever since. The BACnet protocols are made use of in central control systems manufactured by companies like Honeywell, Siemens, and Johnson Controls, among many others. BACnet is widely used throughout the world today for commercial and institutional buildings with complex mechanical and electrical systems. Contractors, architects, building systems engineers, and facilities managers must all be cognizant of it and its applications. This book will offer those readers the ''inside wisdom'' from the person who actually helped to create this standard specification...making it easier to understand the intent and use of each of the data sharing protocols, the controller requirements, and the opportunities for inter-operability between different proprietary controllers and systems. Readers will appreciate: - The review of history of BACnet and its essential features, including the ''object model,'' data links, network layers, and BACnet systems - Coverage such services as alarm and event services, file access services, and remote device management services - Insight into future directions for BACnet, including wireless networking and network security

DKK 811.00
1