The current paint got moldy and needs to be scraped off. It looks like the old paint was oilbased as moisture brought out the oil and those little brown beads. So I am leaning toward latex. But I'm not an expert. Thought? Also what about the primer?
No, they do not. RTD's operate on the principle that the electrical resistance of a conductor or semiconductor (usually Platinum) varies with temperature. The resistance across the RTD is measured, indicating the temperature. Thermocouples operate on the principle that when two dissimilar conductors (metals) are in contact with eachother (a junction), they create an electromotive force (emf) that is related to the temperature of the junction. The magnitude of the emf is indicative of the temperature. For more thermocouple reference, look up these terms: Seebeck effect, Peltier effect and Thomson effect. The specific application of either of these devices could be just about anything. Measurement uncertainty for an RTD can be as low as +/- 0.005 degrees Celcius. A thermocouple, at best, would yield a measurement uncertainty of +/- 0.1 to +/- 1.0 degrees Celcius. So if you need a really accurate and precise measurement, don't use a thermocouple.
I was there last december. It is a safe city. However, Quito is just like any other major city in the world. There are parts that you should avoid. Don't walk around with expensive jewelry, watches, and cameras. I visited the Equatorial Line (Mitad del Mundo), the colonial section, the Panecillo (on top of a hill where there is a giant statue of the Virgin Mary.) I had absolutely no fear or concern for my safety. Stay in the modern section of Quito, as it is safe and clean there.
