Centralized flow compensation
Thread Content
I would like to ask whether I can perform temperature and pressure compensation directly in the configuration parameters for a differential pressure orifice plate flow meter that has not been calibrated yet Is hydrogen sulfide gas acceptable after compensation? A vortex flow meter can’t be used, right?
For corrosive gases, the cost of vortex flow meters is too high
Can it be compensated directly in the configuration?
All can be compensated for; whether it is possible depends on the accuracy of the temperature and pressure signals used for compensation
Can’t use tag compensation for those that have been squared, right?
No square root is applied at the header; it must be applied on the DCS. After taking the square root, temperature and pressure compensation is performed, and if the parameters are correct, the results will be accurate. Vortex street meters can also be used; no square root calculation is required for them, but temperature and pressure compensation is still necessary.
Do you mean that headers that have been squared can also be subject to thermal and pressure compensation, as long as the configuration does not involve squaring?
It is only after taking the square root that the differential pressure has a linear relationship with the flow rate. As for compensation, it is carried out after the flow rate has been calculated; it represents two distinct stages in the calculation process