2013年8月19日星期一

Introduction of performance ntc temperature sensor


ntc temperature  Position Sensor   generally consists of two or three kinds of metal oxides, clay mixed in a similar fashion, and in the high-temperature calcination furnace into a dense sintered ceramic. Oxygen link metal tend to offer free electrons. Ceramic is usually an excellent insulator. But only in theory, as the temperature approaches absolute zero, the thermal resistance of ceramic is this situation. However, when the temperature is increased to the range of the more common, more and more thermal excitation will throw the free electrons. With many electron carriers through the ceramic, the effective resistance is reduced. Resistance variation with temperature is extremely sensitive. Typical variation for each degree Celsius decrease (-) 7 [%] to 3 [%]. Then use a wide temperature range suitable for any Crankshaft Position Sensor  is the most sensitive.
Nominal temperature resistance depends on the resistivity of the base material, the size and geometry, the contact area of ??the electrode. Thick narrow thermistors have relatively high resistance, the shape is thin and wide to have lower resistance. Actual size is also very flexible, they can be small or too small a diameter of .010 inches. Virtually no limit to the maximum size, but usually for half an inch or less.

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