Dynasonics TFXL Clamp-On Ultrasonic Flow User Manual download pdf (Page 5)

06-TTM-UM-00158 8/2012 5

QUICKSTART OPERATING

INSTRUCTIONS

This manual contains detailed operating instructions for all

aspects of the TFXL instrument. The following condensed

instructions are provided to assist the operator in getting the

instrument started up and running as quickly as possible.

This pertains to basic operation only. If speci c instrument

features are to be used or if the installer is unfamiliar with this

type of instrument, refer to the appropriate section in the

manual for complete details.

NOTE: The following steps require information supplied by

the TFXL meter itself so it will be necessary to supply power

to the unit, at least temporarily, and connect to a computer

using ULTRALINK to obtain setup information.

Q1  TRANSDUCER LOCATION

1) In general, select a mounting location on the piping

system with a minimum of 10 pipe diameters (10 × the

pipe inside diameter) of straight pipe upstream and 5

straight diameters downstream. See Table 2.1 for addi-

tional con gurations.

2) If the application requires DTTN or DTTH transducers

select a mounting method for the transducers based on

pipe size and liquid characteristics. See Table 2.2. Trans-

ducer con gurations are illustrated in Figure Q.1 below.

NOTE: All DTTS and DTTC transducers use V-Mount

con guration.

3) Enter the following data into the TFXL transmitter via

the ULTRALINK™ software utility:

1. Transducer mounting method

2. Pipe O.D. (Outside Diameter)

3. Pipe wall thickness

4. Pipe material

5. Pipe sound speed*

6. Pipe relative roughness*

7. Pipe liner thickness

8. Pipe liner material

9. Fluid type

10. Fluid sound speed*

11. Fluid viscosity*

12. Fluid speci c gravity*

* NOMINAL VALUES FOR THESE PARAMETERS ARE

INCLUDED WITHIN THE TFXL OPERATING SYSTEM. THE

NOMINAL VALUES MAY BE USED AS THEY APPEAR OR

MAY BE MODIFIED IF THE EXACT SYSTEM VALUES ARE

KNOWN.

4) Record the value calculated and displayed as Trans-

ducer Spacing.

Q2  PIPE PREPARATION AND TRANSDUCER

MOUNTING

INTEGRAL & REMOTE DTTS AND DTTC

TRANSDUCERS

1) Refer to the signal strength values available on the Data

Display screen in the ULTRALINK software utility.

2) The pipe surface, where the transducers are to be

mounted, must be clean and dry. Remove scale, rust or

loose paint to ensure satisfactory acoustic conduction.

Wire brushing the rough surfaces of pipes to smooth

bare metal may also be useful. Plastic pipes do not

require preparation other than cleaning.

On horizontal pipe, choose a  ow meter mounting

location within approximately 45-degrees of the side of

the pipe. See Figure Q.2. Locate the  ow meter so that

the pipe will be completely full of liquid when  ow is

occurring in the pipe. Avoid mounting on vertical pipes

where the  ow is moving in a downward direction.

3) Apply a single ½” (12 mm) bead of acoustic couplant

grease to the top half of the transducer and secure it to

the pipe with bottom half or U-bolts.

4) Tighten the nuts so that the acoustic coupling grease

begins to  ow out from the edges of the transducer

and from the gap between the transducer and the pipe.

Finger tighten only. Do not over tighten.

DTTN AND DTTH TRANSDUCERS

1) Place the  ow meter in signal strength measuring

mode. This value is available in the data display of the

software utility.

2) The pipe surface, where the transducers are to be

mounted, must be clean and dry. Remove scale, rust or

loose paint to ensure satisfactory acoustic conduction.

Wire brushing the rough surfaces of pipes to smooth

bare metal may also be useful. Plastic pipes do not

require preparation other than cleaning. On horizontal

TOP VIEW

OF PIPE

W-Mount V-Mount Z-Mount

TOP VIEW

OF PIPE

TOP VIEW

OF PIPE

FIGURE Q.1  TRANSDUCER MOUNTING CONFIGURATIONS

1 2 3 4 5 6 7 8 9 10 ... 43 44

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Dynasonics TFXL Clamp-On Ultrasonic Flow User Manual Page 5

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