SEP-OCT 2017

Issue link:

Contents of this Issue


Page 45 of 57

46 INTECH SEPTEMBER/OCTOBER 2017 WWW.ISA.ORG products & resources | Hot Stuff for the Automation Market OPC UA Wrapper The OPC UA Wrapper enables OPC UA clients to communicate with classic OPC servers. It supports OPC Data Access, OPC Historical Data Access, and OPC Alarms & Events servers. The wrapper acts as a bridge between classic OPC servers connected to the network and OPC UA clients by map- ping the address space of classic OPC servers to the address space of an OPC UA server. The wrapper is also a gateway that gives OPC Unified Architecture clients access to COM/DCOM-based OPC servers as if they were OPC UA servers. It supports not only multiple local and remote OPC DA/HDA/AE servers per service, but also multiple wrap- per services running at the same time. This multiconnected bridge exposes any OPC server data as the OPC UA server's data. The OPC UA Wrapper supports two types of communication protocols: TCP and HTTP. All created wrappers run as services in the background. The wrapper includes a configuration tool that reduces configura- tion efforts. With this graphical user inter- face, users can create, edit, start, and stop services and configure security settings. Security features include establishing secure communication channels, keeping track of sessions, using encryption, and signing messages. The security modes to be used, along with user identity tokens, can be cho- sen, managed, and changed by the user from the configuration tool. The wrapper records messages in log files using different logging levels, so end users can track the execution and diagnose problems. Integration Objects Air and gas flowmeters The MT100 series air and gas flowmeters combine electronics technology with preci- sion flow sensors in a package designed for demanding plant operating environments. They provide temperature-compensated direct mass flow measurement of air and gases for precise, repeatable measurement with low maintenance requirements in large diameter pipes, stacks, and rectangular duct installations. In electric power generation, petrochemical refineries, and other heavy industries, large diameter pipes and ducts present unique challenges for flowmeter installation and performance. Hot, moist, or dirty gases, along with distorted flow pro - files, low flow rates, and wide turndown rates are common performance challenges. The MT100 series is available with two-to- eight flow-rate sensing points to overcome these issues. Multiple sensors are inserted at various depths within a pipe, and their out - puts are multiplexed and averaged to pro- duce the flow rate within the process line. The MT100 meter's sensors can be in- stalled either across a mast or at multiple points around the process line in a single plane. In large stack applications, this means that the instrument installation can be done at a single platform location to save money compared to other technologies. FCI NEW! From ISA Publishing Order your copy today at Understand and Reap the Benefits of Performance-Based Safety Instrumented Systems This book describes the design phase of the SIS safety life cycle defined in IEC 61511:2016. It focuses on the fundamental concepts, the entire safety life cycle process, and the design—from concep - tual design through design verification.

Articles in this issue

Links on this page

Archives of this issue

view archives of InTech - SEP-OCT 2017