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Temperature Q&A with JR Madden: Flexible RTD Sensors Needed for Cold and Hot Fluid Lines

Temperature Q&A with JR Madden: Flexible RTD Sensors Needed for Cold and Hot Fluid Lines
Q: I have a project for six RTD measurements that makes using standard fixed length sensors difficult because there is little clearance near the top of the thermowell for sensor insertion.  It looks like your “WORM Sensor” would be an ideal fit for the application because of its flexible design.  These RTD sensors need to be 100 or 1000 ohm platinum elements with Class A or 1/3 DIN accuracy ratings. They will be used to monitor chilled and hot water lines with min and max temperature limits of 30 F and 180 F.  Maximum insertion length in these ¼ inch ID thermowells is about 10 inches.  I noticed that your standard WORM length is 24 or 36 inches.  Are custom length WORM sensors available?  If so, what cost is associated with ordering multiple sensors at custom lengths?  Lastly, we usually request test data with all of our sensors and check them in our air bath or heat block calibration units.  Can you offer a test report or test data points with these WORM sensors?
Published: August 3, 2016

NCS Skids Installed in DOE Hanford Site Sludge Treatment Project

NCS Skids Installed in DOE Hanford Site Sludge Treatment Project

At the Hanford Site KW-Basin Sludge Treatment Project in southeastern Washington, the Department of Energy (DOE) employs multiple NCS Net Concentrator Systems to automate communications among numerous sludge conversion process skids. 

Published: June 29, 2016

EHELP: Temperature Measurements in Liquid

EHELP: Temperature Measurements in Liquid

Q: We want three 100 ohm, .00385 Alpha RTDs to measure heated glucose in railroad cars. We heat the glucose to 140-150°F, and want to use a 5-foot long flexible sensor with a head on top containing a terminal strip. We also want to run flexible conduit from the head with copper wire for easy replacement access. We can fabricate a bracket that would span the midway above the railcar that supports the housings and includes holes that allow the flexible RTDs to drop down for installation. What do you offer that is a fit for our application?

Published: June 28, 2016

EHELP: How do I protect the STA from external voltage surges?

EHELP: How do I protect the STA from external voltage surges?

Q: We want to install an
STA / HLPRG / 3PRG / U / -AO [DIN] into our process and plan to use 4-20mA output loop voltage sourced by a DCS for the analog output, however this voltage may fault at up to 132 VAC. Should we design in fuse protection to the external voltage circuit upstream of the STA to protect it from these surges? Or does the STA include features that protect it from these faults?

Published: June 14, 2016

Update on Moore Industries Battery Lifing Comparison on its THZ and BULLET WirelessHART Adapter

Update on Moore Industries Battery Lifing Comparison on its THZ and BULLET WirelessHART Adapter

On June 13, 2014, Moore Industries began a battery lifing comparison pairing up the BULLET WirelessHART Adapter and the THZ Dual Head Smart HART Temperature Transmitter. The purpose of the test was to identify how much longer battery life could be conserved if a THZ was configured only to turn on when a measurement was required versus keeping the transmitter on non-stop. 

Published: June 13, 2016
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