Calculation sheet for the DeltaTab flow meter of the boiler secondary air frequency probe
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I would like to ask everyone: on the calculation sheet for the Delta valve used in the secondary air system of the boiler I’m installing, there is a value of 21.2 Hz for the frequency probe. What does this mean? The secondary fan is driven by an inverter-driven motor, and it is only when the frequency reaches a certain level that the air volume is displayed. Could you please tell me whether 21.2 Hz represents this critical value or if it has some other meaning? Urgent urgent urgent
It could be the natural frequency of the rod’s body, or it could be the vibration frequency generated by the flow rate – it depends on the definition given in the calculation documents.