Do you understand Thermocouples?
Control Engineering Editor Peter Welander demonstrates the concept and use of thermocouples, including one made from scrapbox components. (10 minutes). I think this is a lot cooler than the TV ads for Sprint mobile that Dan Hesse makes (in MHO).
Way to go, Peter!
To learn more about thermocouples visit About Temperatures.com’s Thermocouple pages at: www.temperatures.com/sensors/csensors/thermocouples-tcs/
A Tour of the ABB’s Stonehouse flow meter calibration rig in the UK
Here’s a video of something that few get to see or appreciate, a calibration rig for a large, industrial flow meter calibration facility. This one is a very large one, for flowmeters up to 3000 mm (nearly 10 feet) in diameter at >ABB’s facility in the UK.
Do all flowmeters need to be calibrated. You bet they do! Like all measurement devices, flowmeter are no more precise than their fundamental calibration.
Sometimes it is an easy task; one can calibrate a simple, low flow meter with some water a volume measurement device (a bucket?) and a timer (stopwatch). For others, especially ones for very large flow rates and unusual fluids, it can be a challenge.