Dynasonics TFXM Series Ultrasonic Multi-Channel Flow Meter - Manual (Page 66)

Rev. 8/02
-3. 28- TFXM
?? An out-of-round pipe, carrying water, causes the TFXM to
indicate a measured sound speed that is 7.4% lower than
the TABLE 3.1 value. This pipe condition will cause the
flow meter to indicate flow rates that are 7.4% lower than
actual flow. To correct the flow readings, enter 1.074.
PART 3 - KEYPAD CONFIGURATION