美国PTC 674F微型点温检查表面温度计

本仪器是用来测量表面温度，特别是在空间有限的情况下。双金属传感器可与被测表面紧密接触，它使得温度计具有快速的响应时间。 其小尺寸可以测量热钢板的一部分或者整个表面。 惰性指针（最大指针）是通过后面的磁铁控制的，指针所在位置表示在一定时期内达到最高或者最低温度。这会保留该读数，即使震动或者误操作都不会让它重置。 

675系列可用于烘箱，空气管道，和其他装置的热量泄漏。 这些温度计也可以用来测量散热片，热交换器，实验室炉，滚筒，热板的温度。 675系列也可以用于测试电子部件的温度。 可以通过采用一些这样的温度计，然后绘制读数来构建一个区域的等温线。

This instrument is designed to measure surface temperatures, especially where space is limited. The bimetal sensor comes in close contact with the surface to be measured, which provides the thermometer with a fast response time. The small size makes for minimum "heat-stealing" from a part or surface. A lazy hand (max pointer) is held by a magnetic clutch and indicates the highest or lowest temperature reached in a given period. It will hold this reading despite the vibrations and jarring of normal use and can be reset indefinitely. 

The 675 Series can be used for determining heat leakage from ovens, hot air ducts, and other installations. These thermometers can also be used for measuring the temperature of heat sinks, heat exchangers, laboratory heaters, platens, and hot plates. The 675 Series can be used for testing the temperature of electronic parts. An isotherm of an area can be constructed by employing several of these thermometers and then plotting the readings.