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Introduction  Following on from the Flir and Chauvin Arnoux units, I decided to take a look at what Fluke offered and how it would compare to the Keysight and Megger units that I have also reviewed.   Megger Road Test Review Keysight U1461A Fault Chauvin Arnoux CA6526 Review Flir IM75 Review   There are essentially three meters available from Fluke that are in the format I am interested in. The Fluke 1503 is their basic offering and does not offer any download capability a ...
Connecting the thermocouple sensor to instrumentation must be done carefully to optimize accuracy and minimize cost. The resultant temperature measurement is only as accurate as the sensor and its interface.   The thermocouple produces only a small thermo-electric e.m.f (typically 40μV/oC) and it is necessary to eliminate or minimize spurious thermal emf signals and Ohmic effects which would otherwise result in incorrect readings.   The length of cable used between the sensor ...
Everyone is familiar with the USB Batteries that can be used to charge a cell phone and which can themselves be charged off a any standard USB port or charger. A while back I began using one type of these batteries to power some of my small projects and also I began to advocate their use to my friends for this purpose. Here are two of the many brands and types currently available.     For the rest of this Blog I will refer to them as "Black" and "Silver". My first experience with us ...
Introduction Diodes (or p-n junctions) make extremely low-cost temperature sensors! They are convenient, especially since they can be included on the silicon as part of larger designs into integrated circuits (ICs) - it costs almost nothing to include one : ) There are many dedicated ICs of course too, that use a p-n junction as a temperature sensor, and wrap an analog-to-digital converter (ADC) and a simple interface such as I2C around it. Again they are low-cost, and it is not unusual in larg ...
Hayabusa 2’s landers will study the surface of Ryugu and send photos and samples back to Earth. Hayabusa 2 making contact with the asteroid. (Photo via JAXA)   News like this is why we're here.   Back in 2014, Japan’s space agency, JAXA, launched a robotic spacecraft, dubbed Hayabusa 2, to land on the asteroid Ryugu, a “Type C” thought to have hefty amounts of water and organic materials that could be used to learn more about its solar systems. The spacecraft ...
This miniature satellite may change the way we track weather patterns (Photo from NASA)   It seems no matter how many advances we make in technology, no one can still get the weather right. That may change with NASA’s latest development. The agency has been testing a small, shoebox-sized satellite that can make more accurate weather forecasts. It does this by using experimental technology to detect rain and snow in order to see storms.   Called RainCube, short for “Radar ...

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