Issues with Micro Motion mass flowmeters
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Discussion: 1. For Micro Motion mass flowmeters, when the actual operating pressure is much higher than the calibration pressure, the measured mass flow rate should be ( ) compared to the actual flow rate (without pressure transmitter compensation at the site and without any adjustment to the flow coefficient). A. Less than the actual flow rate B. More than the actual flow rate C. The same as the actual flow rate D. It may be more than the original flow rate, or it may be less
The answer is A, less than the actual flow rate. .
Why is the pressure during the use of the flow meter the same as the calibration pressure? It can still be used just the same. Choose C; the person who came up with this question is an idiot.
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mutianly@163.com
Not necessarily; it depends on the properties of the medium. If it is a liquid, high pressure will cause some vaporization, resulting in measurement errors that are larger than the actual flow rate. Without vaporization, it might be small; the difference won’t be very large.
Does a mass flow meter require pressure compensation?