Steam orifice plate flow meter three valve group debugging method? Why does the flow become negative after debugging?
Note: 1. can not let the tube bore ice or liquid separation loss.2., the measuring element shall not be pressed and heated in one direction.3., the balance valve must be shut down Caixing Oh!
Open the table in order: 1. open the pressure balance valve 3. open the valve 2. closed negative pressure valve (order and reverse order stopwatch table)
You don't know the so-called negative flow into what is going on, you confirm the positive and negative pressure rooms have installed anti ah, then confirm the condensate tank a positive pressure side if there is leakage or condensation of water inside the suction side is less than 2, and the height of condensate tank are consistent.If the installation conditions are met, you use the multimeter to measure the output current of a header header, if not the root, the output is the differential pressure and the current value is greater than 4mA, then you can check the DCS side of the reason. Another problem is small flow resection.
