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Category Archives: Thermocouple

Data acquisition products that measure temperature using a Thermocouple.

How To Eliminate Noise in Data Logger and Data Acquisition Measurements (Part 1 of 6)

Data Acquisition > Products or Data Logger > Products (Note: A consolidated version of this topic that contains all six part can be found here) This happens almost daily: A customer contacts our support group to complain of noise on his measurement. Almost invariably a comparison is made between the output of his PC-based product Read More

Posted by  Roger Lockhart ; Published December 1, 2011

Ambient Temp Affects Thermocouple Measurement Accuracy

Data Logger > Thermocouple We had an interesting situation develop recently for a data logger that we resell. If you follow the link you’ll see that this is an inexpensive, thermocouple (TC) data logger that’s actually quite popular. This particular application needed to monitor the temperature of biological samples shipped via FedEx over a four-hour Read More

Posted by  Roger Lockhart ; Published September 16, 2011

Be Mindful of Polarity When Making Thermocouple Measurements

Data Acquisition > Thermocouple A little vigilance will save you a lot of time and aggravation when making thermocouple measurements. A common mistakes people make when using thermocouples to acquire temperature data is to assume that the red wire is positive. I know what you’re thinking, “Isn’t it?” Nope. Contrary to popular belief (and what Read More

Posted by  Daqhelper ; Published September 9, 2011

Maximum Thermocouple Wire Length

Data Acquisition > Thermocouple We commonly hear, “What’s the maximum thermocouple wire length I can use with your instrument?” That’s a good question. There are two factors that affect TC cable length: 1. Noise 2. Inaccuracy The longer the cable the more susceptible it is to radiated noise. The TC represents a low impedance source, Read More

Posted by  Roger Lockhart ; Published July 14, 2011