Dynasonics TFXL Clamp-On Ultrasonic Flow - Manual (Page 8)

8 06-TTM-UM-00158 8/2012
Locate the transmitter within the length of transducer cable
that was supplied with the TFXL system. If this is not possible,
it is recommended that the cable be exchanged for one that
is of proper length. Both transducer cables must be of the
same length.
NOTE: The transducer cable carries low level, high frequency
signals. In general, it is not recommended to add additional
cable to the cable supplied with the DTTN, DTTH, DTTS or
DTTC transducers. If additional cable is required, contact the
factory to arrange an exchange for a transducer with the
appropriate length of cable. Cables to 990 feet (300 meters)
are available. To add cable length to a transducer, the cable
must be the same type as utilized on the transducer. Twinaxial
cables can be lengthened with like cable to a maximum
overall length of 100 feet (30 meters). Coaxial cables can be
lengthened with RG59 75 Ohm cable and BNC connectors to
990 feet (300 meters).
If the transmitter will be subjected to a wet environment, it is
recommended that the cover remain closed after confi gura-
tion is completed. The faceplate of the TFXL is watertight, but
avoid letting water collect on it. A sealed cord grip or NEMA
4 conduit connection should be used where cables enter the
enclosure. Holes not used for cable entry should be sealed
with plugs.
To access terminal strips for electronic connectors, loosen
the four screws in the display lid and remove the cover. The
terminals where the transducers connect are located under-
neath the display. To connect transducers, remove the four
screws that secure the display and carefully move it out of
the way. Do not over stress the ribbon cable located between
the display and the microprocessor circuit boards.
PRODUCT IDENTIFICATION
The serial number and complete model number of each
TFXL are located on the side of the instrument enclosure.
Should technical assistance be required, please provide the
Customer Service Department with this information.
PART 1 - TRANSMITTER
INSTALLATION
After unpacking, it is recommended to save the shipping
carton and packing materials in case the instrument is stored
or re-shipped. Inspect the equipment and carton for damage.
If there is evidence of shipping damage, notify the carrier
immediately.
The enclosure should be mounted in an area that is conve-
nient for servicing, calibration or for observation of the LCD
readout (if equipped).
1) Locate the transmitter within the length of transducer
cables supplied. If this is not possible, it is recom-
mended that the cable be exchanged for one that is
of proper length. To add cable length to a transducer,
the cable must be the same type as utilized on the
transducer. Twinaxial cables can be lengthened with
like cable to a maximum overall length of 100 feet (30
meters). Coaxial cables can be lengthened with RG59
75 Ohm cable and BNC connectors to 990 feet (300
meters).
2) Mount the TFXL transmitter in a location:
~ Where little vibration exists.
~ That is protected from corrosive fl uids.
~ That is within the transmitters ambient temperature
limits -40 to +185° F (-40 to +85° C).
~ That is out of direct sunlight. Direct sunlight may
increase transmitter temperature to above the
maximum limit.
3) Mounting - Refer to Figure 1.2 for enclosure and
mounting dimension details. Ensure that enough room
is available to allow for door swing, maintenance and
conduit entrances. Secure the enclosure to a fl at surface
with two appropriate fasteners.
4) Conduit Holes - Conduit holes should be used where
cables enter the enclosure. Holes not used for cable
entry should be sealed with plugs.
NOTE: Use NEMA 4 [IP-65] rated fi ttings/plugs to maintain the
watertight integrity of the enclosure. Generally, the right side
conduit hole (viewed from front) is used for power, the bottom
conduit hole(s) for transducer connections.
2.57
(65.3)
6.66
(169.2)
7.01
(178)
0.875 (22.2) DIA
Conduit Hole
3.17
(80.5)
0.21(5.3) DIA
2 Mounting Holes
FIGURE 1.2 - ENCLOSURE DIMENSIONS
GENERAL
The remote mount TFXL is equipped with three conduit holes
located in the fl ow meter enclosure that should be suitable
for most installations. A sealed cord grip or NEMA 4 conduit
connection should be utilized to retain the NEMA 3 integrity
of the fl ow meter enclosure. Failure to do so will void the
manufacturer’s warranty and can lead to product failure.
The TFXL is housed in an insulating plastic enclosure that
does not provide continuity of bonding between fi eld wiring
conduit and the TFXL chassis or other conduits connected to
the enclosure.