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MAY-JUN 2017

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8 INTECH MAY/JUNE 2017 WWW.ISA.ORG your letters | Readers Respond Build it, See it, Price it, Order it. Point and click or tap to specify valve type, end connections, actuator, and accessories. Model number, price, description, and photo all update instantly! Try one today at: We Make Valve Automation Easy! Online Valve Configurators Quickly & Easily Specify a Complete Automated Valve Assembly on Your PC, Tablet, or Phone Wherever you see this image Convert Your Mobile Device into a HART Communicator … with our Advanced HART-based Products Get Data...On the Go! C O N N E C T > C O N F I G U R E > D O C U M E N T DevComDroid Communicator App Full DD access to HART instruments using your Android device DevCom2000 Communicator Software Full DD access to HART instruments using your Windows device HART Modems (Interface Hardware) Bluetooth, USB and RS232 models Consider satellite The January/February 2017 InTech article by Marcia Gadbois (Schnei- der Electric Software) entitled "Using cel- lular data for SCADA data" leads readers to a false conclusion: that cellular communications are almost always better than satellites. In fact, it is not. Gadbois' company is headquartered in France, as is Eutelsat, for which our company, Connexxs, LLC, is the IIoT dis- tributor and VAR for end-to-end solu- tions. Our principals have been involved in end-to-end IIoT solutions for 18 years. All of them have required connection of the "last mile" from the sensors or smart platforms, such as SCADA, to the Internet. In the very earliest projects, we even used dial-up modems on landlines. Cellular data communications are used far more in the U.S. than satellite solutions, but that was because of the economic or bandwidth limits of the older systems when remote data was first collected. With modern pricing and new technology, satellite networks are now easier to install, easier and more reliable to operate, and less expensive than cell data competitors. Gadbois failed to mention that cell data towers are far removed from many remote locations, and data radios be- come the means of transportation to the towers located over hills or through trees. These systems are expensive to install, and due to overuse of public bandwidths often drop signals and lose data. In addition, the article does not mention that the mobile cell networks themselves are discontinuing the older G networks (such as 2G) and requiring customers to install expensive new mo- dems. The newer networks (3G and 4G) are more expensive to use and them- In memoriam Houston section member John Everhart passed away on 28 November 2016. A long-time ISA member, Everhart was most recently the sales and marketing manager at Horiba. Previously he was president of Emerson's Rosemount An- alytical Division. Everhart enjoyed the many friends and associates he made through his years at ISA. n selves will one day be abandoned. Satellite systems are inherently se- cure, operate with the same contracts and equipment worldwide (without new agreements and modems), and are upgraded without loss of service. There are many reasons that the ar- ticle does not reflect current times, and these should be explored more fully. Curt Jensen, CEO

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