31
1) To determine the frequency out of a turbine meter at maxi-
mum flow, convert the maximum flow rate to gallons/second,
then multiply by the nominal K-factor (pulses/gallon).
2) Calculate the flow rate that corresponds to 1000Hz. Multiply
the maximum flow rate times 1000Hz, then divide by the re-
quired frequency at maximum flow.
3) Enter this value in the “Flow @1KHz” field.
Example:
Maximum Flow Rate = 400 GPM
Desired K-factor = 52 pulses/gallon
400 gallons/minute = 6.67 gallons/second
6.67 gallons/second x 52 pulses/gallons = 346.67Hz
Therefore:
(400 GPM X 1000Hz) / 346.67Hz = 1153.83 GPM
Enter 1153.83 into the “Flow @1KHz” field.
Figure 16
Output Tab
Summary of Contents for TFXL
Page 1: ...1 MODEL TFXL ULTRASONIC FLOW METER Installation and Operating Instructions...
Page 2: ...2...
Page 9: ...9 SOUND GUIDES CLAMP PC INTERFACE CABLE...
Page 41: ...41...
Page 42: ...42 NOTES...
Page 43: ...43...
