Problems on the selection of thermocouples – Request for explanation
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The measurement range of Type E Class I thermocouples is –40 to 800°C. If a tolerance of 0.4% is allowed, then the calculated absolute difference should be ( )°C: A. 1 B. 1.5 C. 0.5 D. 2
The answer is B. How was 1.5 obtained? Please show the solution process
3.36 degrees according to the formula, :o
I also don’t understand what it means; a tolerance of 0.4% is allowed, the range is 840 (800 – (-40)), and the maximum allowable absolute error is 3.36, but this option isn’t available...
Yeah, I’m confused too – where did this answer come from?
I think the same way, so I feel very confused
This question is likely meant to test your knowledge of the allowable tolerance for Type E, Class I thermocouples. You can check a table: for temperatures ranging from -40 to 375°C, the allowable tolerance is 1.5 degrees Celsius, while for temperatures from 375 to 800°C, the allowable tolerance is 0.4%. There is only one answer to this question: 1.5; that’s the only option to choose.
The grading is vague; only by knowing which level the score falls into can it be determined.
This question is likely meant to test your knowledge of the allowable tolerance for Type E, Class I thermocouples. You can check a table: for temperatures ranging from -40 to 375°C, the allowable tolerance is 1.5 degrees Celsius, while for temperatures from 375 to 800°C, the allowable tolerance is 0.4%. There is only one answer to this question: 1.5; that’s the only option to choose. Agree with this view.