REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
8th Edition
ISBN: 9781337370042
Author: TOMCZYK
Publisher: CENGAGE L
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Textbook Question
Chapter 11, Problem 1RQ
What does "calibrating an instrument" mean?
Expert Solution & Answer
To determine
The meaning of 'Calibrating an instrument'.
Explanation of Solution
Calibration is a process in which the accuracy of an instrument is compared with a known standard values. Even if the instrument is perfectly calibrated, after using for a certain period of time and being exposed to moisture and vibration causes stress in it.
For example; if the speedometer of an automobile is actually travelling at a speed of 60 mph but shows a reading of 55 mph it shows the speedometer is not properly calibrated. Now, if the circuits and sensors are so adjusted that it records correct readings then, the instrument is said to be calibrated. So, it is necessary to calibrate the instrument after certain time periods to get the precise results.
There are some instruments that can be easily calibrated, some is calibrated by precise technicians only and there are also some instruments that cannot be calibrated at all.
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Multiple Choice
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Chapter 11 Solutions
REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
Ch. 11 - What does "calibrating an instrument" mean?Ch. 11 - Three reference points that may be used to check...Ch. 11 - Prob. 3RQCh. 11 - Temperature-measuring instruments may be designed...Ch. 11 - Glass stem thermometers are being replaced by...Ch. 11 - True or False: To check the temperature leads of...Ch. 11 - Accuracy of a thermometer is more important in the...Ch. 11 - Prob. 8RQCh. 11 - Prob. 9RQCh. 11 - What should a gauge manifold reading indicate when...
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- hand-written solutions only, please. correct answers upvoted!arrow_forwardhand-written solutions only, please. correct answers upvoted!arrow_forward! Required information Consider a flat-plate solar collector placed horizontally on the flat roof of a house. The collector is 1.3 m wide and 2.8 m long, and the average temperature of the exposed surface of the collector is 42°C. The properties of air at 1 atm and the film temperature are k=0.02551 W/m-°C, v = 1.562 × 10-5 m²/s, Pr = 0.7286, and ẞ= 0.003356 K-1 Determine the rate of heat loss from the collector by natural convection during a calm day when the ambient air temperature is 8°C. The rate of heat loss from the collector by natural convection is W.arrow_forward
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