Seeking help with flow measurement.
Thread Content
When a differential pressure flow meter is used to measure flow rate, what impact does abnormal temperature have on the measurement results? The temperature at the site is 850°C.
It will have an impact, because the density has changed
Could it be specified, through formulas or other means, whether it is large or small?
The steam pressure is around 4 kilograms, and the temperature should be between 140-150 degrees. Density can be determined based on temperature or pressure. What other parameters are affected by the value of 850? Does it have a greater or lesser impact on flow measurement?
Since the temperature is already abnormal, it indicates that the measurement condition has been disrupted, and as a result the measurement results are unstable.
What impact does an abnormal temperature have on the results, while the density remains unchanged?
If the temperature changes, how can the density remain unchanged?
By temperature, I mean saturated steam; the density can be determined from both temperature and pressure. That’s why I say the density remains unchanged. I just don’t understand whether temperature still affects other parameters, thereby impacting the measurement results.
The traffic is 0.6 times the original amount.
The on-site application should be roughly as follows, right? 1. The differential pressure value (differential pressure transmitter) corresponds to the volumetric flow rate ； 2. The steam density is obtained corresponding to the temperature value ； 3. The steam mass flow rate is obtained by multiplying the above volume flow rate by the density. Determine whether temperature anomalies will cause measurement errors based on the actual situation; if temperature is not taken into account in the flow calculation (for example, by using a fixed density value or compensating for density with saturated steam pressure), then abnormal temperature readings have no impact.
What medium has an on-site temperature of 850 degrees? How is the on-site temperature determined? Is 850 degrees the temperature displayed when the thermometer is faulty, or is it the upper limit for an open circuit?