Dynasonics Fusion Water Flow Meter - Manual (Page 16)

16
Rate Pulse Output Connection
Figure 10 illustrates the field wiring terminals and switch settings
utilized for the rate pulse output.
Full Flow / K-factor Calculation
The Rate Pulse output generates 1,000 Hz (pulses per second) at
full flow. To adjust the K-factor of the meter, adjust the full flow
entry. Two examples of this conversion are listed below.
Example 1
K-factor (pulses/gallon) = 1,000 ÷ (Full Flow GPM ÷ 60)
K-factor (pulses/gallon) = 60,000 ÷ Full Flow GPM
Example, K-factor = 1,200 if full flow = 50 GPM
Example 2
K-factor (pulses/gallon) = 1,000 ÷ (Full Flow BPD ÷ 2057)
K-factor (pulses/gallon) = 2,057,000 ÷ Full Flow BPD
Example, K-factor = 1,143 if full flow = 1,800 BPD