Hi, Well, you do not understand what I mean. For your current configuration, for range 1, flow rate starts from -576 to -143 will apply the slope as 1.45557 and offset as -23.796. But for the range 6, flow rate starts higher than 576 to maximum designed flow rate such as 3000LPH will apply the slope as 1.45557 and offset as -23.796. The range definition is different here. Best regards, Cash Hao
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