Rosemount Vortex Flow Meter Parameter Setting and Calibration Manual
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On site, it was found that the flow meter showed no flow rate; the water from the boiler was being measured. The medium is flowing, but there is no flow rate display; only occasional minor fluctuations occur. Please help solve it! I’d be extremely grateful if a friend could assist!
The first vortex flow meter requires a flow velocity; it’s not clear whether your operating conditions can meet this requirement. Another issue is related to your settings; try disabling low-flow cutoff. Also, consider the choice of medium for measurement – liquid should be used – as well as the density setting.
The low-flow setting has been disabled; if not, there’s an issue with the table header display.
The vortex flow meter from Rosemount has a self-check function; connect it to a Hart communicator and check it first.
For boiler water, first I would like to know what the diameter is. One issue with boiler water is that the temperature can be quite high, and often there is steam inside the pipes. If the direction of the sensor/indicator is set to point upward during installation, then water vapor in the upper area will interfere with the vortex formation by the sensor, resulting in generally lower measurement values from the flow meter. The solution is that if the diameter is large, it is possible to position the sensor/indicator on the side; if the diameter is small, the sensor/indicator can be placed below (this may allow solid impurities in the liquid to affect the measurements, so it depends on your choice). The second issue is that it’s not clear what your expected flow rate is; vortex flow meters have a limited measurement range, and if the flow rate is too low, it becomes difficult for the meter to display it. Here, you need to use the Hart handheld device to check whether the low-flow signal of the flowmeter has been disabled.
You’re welcome; let’s share ideas if there are any questions.
Check whether the parameter configuration is correct, as well as the diameter of the measuring medium and the K coefficient, etc. If there are no issues, check whether the low-flow cut-off value is too high
To understand the principle of vortex streets, you first need to be familiar with it