Calibrating a wireless sensor in the shop

Direct connection of the calibrator, temperature block, and device management platform simplifies the process and records results automatically. Video: Beamex’s Ned Espy demonstrates the process.

11/11/2013

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Calibrating a wireless HART transmitter using a Beamex MC6 Advanced Field Calibrator and Communicator, Field Temperature Block, and probe.



Ned Espy, technical director with Beamex, demonstrates an automated, documented loop calibration of a wireless HART transmitter that has been removed from service using the company’s MC6 Advanced Field Calibrator and Communicator, Field Temperature Block, and probe at the Emerson Global Users Exchange 2013.

This automatically documented test is fully supported by Calibration Excellence, a best-in-class software solution for managing calibrations which includes Beamex’s CMX calibration software, Emerson’s AMS Device Manager and the AMS Suite Calibration Connector – which provides a communication link between AMS Device Manager and CMX.

Beamex and ISA have now entered into a partnership naming Beamex as ISA’s Strategic Partner for Calibration. Under the agreement, the two groups will work together to provide ISA members and customers with access to Beamex’s calibration resources, including publications, case studies, seminars, and advice. 

www.beamex.com

www.emersonprocess.com



Jonas , , 11/26/13 01:15 AM:

What is indirectly demonstrated (and maybe the presenter doesn't even realize) is one of the most important characteristics of the WirelessHART technology: that all WirelessHART devices have a wired HART maintenance/console port/terminal where you can connect a documenting calibrator like this, or a handheld field communicator, or a laptop interface. That is, all the tools most plants already have today can also be used with WirelessHART devices. This means WirelessHART devices are very easy to use. The same procedures apply, so minimal learning. Imagine if any other wireless protocol had been used, then this calibrator or the plant’s handheld etc. could not be used, and instead such a plant would have to rely on new and unfamiliar tools with proprietary interfaces. That would be a much steeper learning curve.

The ability to use the same documenting calibrator, same handheld field communicator, and same laptop software for WirelessHART as you do for your 4-20 mA, Foundation fieldbus, and PROFIBUS devices is very powerful. It just makes the work for the run & maintain organization so much easier. The key to interoperability with multiple protocols mentioned in the video is EDDL (www.eddl.org): same tools, same procedures; easy.

Plants can use FOUNDATION fieldbus for control, 4-20 mA for safety as their primary layer of automation for measurements “on the P&ID” for the control and safety systems, and WirelessHART for pervasive sensing as a second layer of automation “beyond the P&ID” for data beyond the control room. All the devices including PROFIBUS for motor controls manage from the same single intelligent device management (IDM) software part of the asset management system. Learn more about pervasive sensing beyond the P&ID here:
http://community.emerson.com/process/emerson-exchange/b/weblog/archive/2013/10/03/why-are-there-missing-measurements.aspx

The 8-input temperature transmitter shown can provide dramatic savings on a new project in temperature profile applications such as profiles in a reactor, column, boiler tubes, or gas turbine etc. For instance, for fieldbus you can get a transmitter accepting 8 inputs, and you can put 16 of those on the same bus, meaning 128 measurements on a single pair of wires (communication and power). Similarly there are wireless transmitters accepting 4 inputs and you can have 100 of those in a wireless networking, meaning 400 measurements on a single gateway. In most temperature monitoring applications, an update period of 4-16 seconds is acceptable. For a temperature control loop, a single or dual input fieldbus transmitter is much faster achieving. That is, each such transmitter eliminating 8 (or 4) conventional transmitters, 8 (or 4) pairs of wires, and 8 (or 4) AI channels on the system. The cost savings are dramatic. Learn more about fieldbus here:
http://www.fieldbus.org/images/stories/technology/aboutthetechology/overview/fieldbus_brochure.pdf

Learn more about calibration of smart transmitters here:
http://www.eddl.org/DeviceManagement/Pages/Calibration.aspx
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