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The ROI-XMA series is a versatile family of loop powered 4-20mA resistance transmitters. Versions can be provided for resistances with full resistance, between 1K and 10K ohms. Resistance transmitter signal range can be custom scaled to alternate resistance spans within resistance range. Read thermistors, RTDs, potentiometers, and other resistive sensors with a PLC and more.

Find out more

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Inquiries can come from all over; USA, Australia, Italy, Ireland, Germany, Canada, Brazil, & Bahrain. Some of the interesting ones, are the ones that come up over and over.

Press Releases

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Excel can be an extremely powerful, simple to use, low cost method of data acquisition; when combined with the right measurement device. Most PCs at this point have a big part of what it takes to make this happen, Windows XP & Excel. The addition of a USB A-D, analog to digital converter (like the ROI-USB A-D) is a particularly great way to complete the system; as it doesn't even need a power supply!

There are a variety of Icon (graphic object) or VI (virtual instrument) based data acquisition software packages that you can use, as an alternative to using Excel, at much greater expense ($2K - $5K just for software). One of the main features of these packages is; that you can store readings in a text file that can be opened with Excel. Some of these packages even offer the feature of linking your data real time into Excel.

Should you run software that allows you to store in an Excel compatible file (to import into Excel later). Run software that allows you to link your data to Excel (when you  run the software and Excel at the same time), or read your data directly with Excel? In most applications it's not a hard choice.

Learn more about temperature measurement real time using Excel

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More and more, it's becoming clear; that a measurement system needs to be flexible and easily modified. The real power of the sensor monitoring system is based on, how flexible the data acquisition software portion of the system is. 

The most flexible application that the broadest range of users has access to is Microsoft Excel. Microsoft Excel when used with the right hardware and Excel add-in allows a user to perform live analysis of sensor data within the spreadsheet. 

With Excel Macros and VBA it is possible to create charts and graphs that automatically update with data from your measurement. Bar charts, scatter plots, pie charts, all come alive with continuous temperature real time data added to them. 

With ROI-USB A-D‘s & standard Thermistor Temperature Sensors; software applications such as UCONServer, WINWEDGE, & ROI-XL allow the user to create and extremely powerful data acquisition system.

1. No signal loss for long transmission distance of mA, that would be experienced (as would with a voltage signal). http://www.robertoweninc.com/applications/tech_note/transmitters.html

2. Live zero signal shows if transmission loss such as cable damage, as value below 2Vdc indicate a fault. http://www.robertoweninc.com/applications/tech_note/live_zero.html

Robert Owen Inc., is looking for distributors in the USA, Canada, Ireland, & Australia! If you would like to discuss our products, and how they would fit with your lines, feel free to contact us!

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Robert Owen Inc., manufacturers; A-D systems and signal conditioning solutions, with the purpose of assisting the customer connect sensor or sensing requirement to the PC or the PLC. Robert Owen Inc., specializes in custom instrumentation solutions. Simple solutions to unusual measurement problems, through signal conditioning and signal conversion products. Robert Owen Inc.‘s, signal conditioning products allow; measurements such as temperature, pressure, position, and variety of other types of parameters; to be incorporated into monitoring and control systems in a seamless fashion.

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Robert Owen Inc.
PO Box 227
Albertson, NY 11507
Phone 516-815-3199 Fax 516-706-1705

©2009 Robert Owen Inc. All Rights Reserved.