Resistance measurement The common values of resistancefor a platinum RTD range from 10 ohms for the bird-cage model to several thousand ohms for the ï¬ lm RTD. The single most common value is 100 ohms at 0Â°C. The DIN 43760 standard temperature coefï¬ cient of platinum wire is Î± = .00385.he four-wire resistance measurement may not be required as it is with RTDâs. For example, a common thermistor value is 5000 Ï at 25Â°C. With a typical TC of 4%/Â°C, a measurement lead resistance of 10 Ï produces only .05Â°C error.
Cirrocumulus clouds are usually seen in the winter and indicate fair, but cold weather. In tropical regions, they may indicate an approaching hurricane. Alto Clouds Altostratus clouds are gray or blue-gray mid level clouds composed of ice crystals and water droplets.
Winds in the upper troposphere make these clouds look wispy and thin. Though they are composed of ice, they are usually associated with pleasant weather. Stratus clouds, which form in lower parts of the troposphere, consist of water droplets and cover most of the sky with an even, gray color similar to a fog. These clouds (as well as some cumulus, nimbostratus, and other cloud types) can signal light rain.