Dynasonics TFXL Clamp-On Ultrasonic Flow User Manual download pdf (Page 6)

6 06-TTM-UM-00158 8/2012

pipe, choose a  ow meter mounting location within approxi-

mately 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 upstream transducer and secure it to the pipe with a

mounting strap.

4) Apply acoustic couplant grease to the downstream transducer

and press it onto the pipe using hand pressure at the lineal

distance calculated by the ULTRALINK software utility.

5) Space the transducers according to the recommended values

from the ULTRALINK software utility. Secure the transducers with

the mounting straps at these locations.

Q3  ELECTRICAL CONNECTIONS

POWER CONNECTIONS

1) Power for the TFXL  ow meter is obtained from a direct current

(DC) power source. The power source should be capable of

supplying between 11 and 28 VDC at a minimum of 250 milli-

amps. With the power from the DC power source disabled or

disconnected, connect the positive supply wire and ground to

the appropriate  eld wiring terminals in the  ow meter. See

Figure Q.3. A wiring diagram decal is located on the inner cover

of the  ow meter enclosure for reference.

PIC16F628

DC Ground

11 - 28 VDC

DC Ground

11 - 28 VDC

FIGURE Q.3  POWER CONNECTIONS

TRANSDUCER CONNECTIONS

(Remote Mount Transducers)

1) Guide the transducer terminations through the transmitter

conduit hole located in the bottom-left of the enclosure using

a sealed cord grip or NEMA 4 conduit connection. Secure the

transducer cable with the supplied conduit nut (if  exible con-

duit was ordered with the transducer).

2) The remote mount transducers use an add-in connection board

on the left had side of the meter below the LCD (TFXL 2 version).

The terminals within TFXL are of a screw-down barrier terminal

type. Connect the appropriate wires at the corresponding screw

terminals in the transmitter. Observe upstream and downstream

orientation and wire polarity. See Figure Q.4.

45°

YES

45°

FLOW METER

MOUNTING ORIENTATION

DTTS and DTTC TRANSDUCERS

TOP OF

PIPE

45°

YES

45°

FLOW METER

MOUNTING ORIENTATION

DTTN and DTTH TRANSDUCERS

TOP OF

PIPE

45°

YES

45°

FLOW METER

MOUNTING ORIENTATION

2” DTTS and DTTC TRANSDUCERS

TOP OF

PIPE

FIGURE Q.2  TRANSDUCER ORIENTATION

(Integral mount shown)

(Remote mount shown)

1 2 3 4 5 6 7 8 9 10 11 ... 43 44

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