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1 PT100设计原理PT100是铂热电阻,它的阻值与温度的变化成正比:当PT100温度为0℃时它的阻值为100Ω,在100℃时它的阻值约为138.5Ω。PT100的阻值会随着温度上升而匀速增长,见图1。
1 PT100 Design Principle PT100 is a platinum RTD. Its resistance is proportional to the change of temperature. When PT100 temperature is 0 ° C, its resistance is 100Ω and its resistance is about 138.5Ω at 100 ℃. The resistance of PT100 increases at a constant rate as the temperature rises, as shown in Figure 1.