Dynasonics TFXM Series Ultrasonic Multi-Channel Flow Meter - Manual (Page 21)

Rev. 8/02
- 2.6 - TFXM
The TFXM system calculates proper transducer spacing by
utilizing piping and liquid information entered by the user. This
information can be entered via the keypad on TFXM or via the
UltraLink Windows software utility.
The following information will be required before programming
the instrument:
1. Transducer mounting configuration
2.
Pipe O.D. (Outside Diameter)
3. Pipe wall thickness
4. Pipe material
5. Pipe sound speed 1
6. Pipe relative roughness 1
7. Pipe liner thickness
8. Pipe liner material
9. Fluid type
10. Fluid sound speed 1
11. Fluid viscosity 1
12. Fluid specific gravity 1
1 Nominal values for these parameters are included within the TFXM oper-
ating system. The nominal values may be used as they appear or may be
modified if exact system values are known.
IMPORTANT: Since the time interval being measured is
influenced by the transducer spacing, it is critical that the
transducer spacing be measured on the pipe accurately to
assure optimum performance from the TFXM system.
2. Transducer Spacing
PART 2 - TRANSDUCER POSITIONING