How to distinguish between jacketed thermometers and ordinary thermometers by their appearance
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How to distinguish between jacketed thermometers and ordinary thermometers by their appearance
What is an ordinary thermometer? Basically, all thermometers come with a sleeve. Generally speaking... those with flanges usually come with sleeves... those with intermediate threaded joints usually also come with sleeves……
It’s just a cover added on the outside to protect the thermometer, with various connection styles for those covers.
. . . He is asking about the difference between core-drawn thermometers and non-core-drawn ones.
The question is about the difference between those with sleeves and those without, right? I think it depends on the size; for armored thermocouples/resistors, the diameter is usually around φ6, while those with sleeves have an outer diameter of around φ14 at the lower end. Of course, if there is a taper, it’s almost certainly because there is a sleeve present.
It’s simple – a sleeve thermometer has a sleeve outside the main body of the thermometer； Ordinary thermometers do not have this sleeve. The original poster can’t possibly not understand such clear Chinese, right? Or are you here to test everyone?