Issues regarding the use of vortex flowmeters for measuring steam
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Hello, everyone: The instantaneous readings from the vortex flow meter used for measuring flow in the sub-meters (for steam) are consistently lower than the instantaneous readings from the main meter. The calculations used to determine the instantaneous values in the sub-meters are correct, so there’s definitely no issue with the main meter. The parameters for table sharding are fine; I just don’t know where the problem lies
OP, your description is very incomplete. You need to specify the diameter of the flow meters (the main meter and the sub-meters), the operating pressure and temperature of the process pipelines, the distance between the two meters, the pipeline layout diagram for the main pipes and branch pipes (or between the main meter and the sub-meters), whether it is saturated steam or superheated steam, and the flow range of the flow meters. The analysis of flowmeter problems must be conducted through a comprehensive assessment taking into account the conditions on site.
It is advisable to use the same type of table for both the summary table and the sub-tables.
1 Are these tables products from the same manufacturer? 2 The installation status of these tables, for example, whether the straight sections before and after meet the requirements? What do the piping diagrams for the 3 sub-meters and the main meter look like? Does the steam that comes from the main meter pass through the sub-meters as well?
Take it apart and check it first; if you think everything is fine.