dynasonics TFXL User manual

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MODEL TFXL
ULTRASONIC FLOW METER
Installation and Operating Instructions

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TABLE OF CONTENTS
• Quick Start Instructions 4
• Introduction 6
• Specifications 7
• Symbol Explanations 7
• Components and Terminology 8
• Flow Meter Mounting Procedure 11
• Electronic Connections 14
• 4-20mA Output Connections 16
• Pulse Output Connections 18
• Applying Power 20
• Software Utility 22
• Maintenance 37
• Troubleshooting Guide 38
• Warranty 39
• Service Instructions 40
• Drawings 41
• Notes 42

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QUICK-START INSTRUCTIONS
This manual contains detailed operating instructions for the TFXL instrument.
The following condensed instructions are provided to assist an experienced
operator in basic operation of the instrument. If the operator is unfamiliar with
this type of instrument, refer to the detailed explanations located on pages 10-
32.
A. Select a flow meter mounting location with at least 10 pipe
diameters upstream and 5 diameters downstream from the
meter with no flow disturbances (i.e. elbows, tees, needle
valves, etc.). See Figure 1.
B. On horizontal pipe, choose a flow meter mounting location
within approximately 45-degrees of the side of the pipe. See
Figure 2. Locate the flow meter so that the pipe will be
completely full of liquid when flow is occurring in the pipe.
Avoid mounting on vertical pipes where the flow is moving in
a downward direction.
Figure 1
Figure 2
NO
NO
45°
45°
YES
YES
FLOW METER MOUNTING ORIENTATION

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C. Remove rust, scale and paint from the flow meter mounting
location. Clean to bare metal. Plastic pipes do not require
preparation.
D. Apply a thin, even layer of silicone grease to the two
transducer faces. Ensure that air bubbles are not present
over the two brown plastic sound-guides. Place the electronic
portion of the flow meter onto the prepared area of pipe,
making sure that the flow direction arrow is pointing in the
direction of flow. Place the clamp portion opposite the flow
meter and secure with the enclosed screws. Only moderate
torque is required on the screws—DO NOT OVER TIGHTEN
and DO NOT ROTATE the flow meter on the pipe once the
screws have been tightened.
E. Connect 11-30 Vdc to the power terminals within the TFXL
transmitter. Ensure that the power supply is capable of
sourcing a minimum of 0.25 Amps. Observe polarity.
F. Connect either the 4-20mA, pulse output or both outputs to
the data acquisition or monitoring system as required.
G. Apply power.
H. If the pipe is full of liquid, a flow rate reading will appear. If
the pipe is empty or partially empty, a ERROR 0010 will be
shown on the display. The error will clear when flow resumes
and the pipe fills up with water.
I. Configuration changes and advanced troubleshooting can be
accomplished using the UltraLink software utility, a PC
computer and a PC interface cable.

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INTRODUCTION AND OPERATING THEORY
TFXL transit time flow meters measure flow velocity by sending
pulses of ultrasound energy back and forth between two
piezoelectric devices. See Figure 3. The piezoelectric components
are located behind the oval-shaped, dark plastic sound guides that
are embedded in the flow sensor clamp. If the liquid inside of the
pipe is moving, the sound will travel faster when it is sent in the
direction of liquid flow than it will
when it is sent against the liquid
flow. The TFXL microprocessor
generates the pulses and
measures the elapsed time
required for the sound to travel
between the piezoelectric
devices. Liquid velocity is
proportional to the difference in
time between upstream and downstream time measurements. The
TFXL compensates for gas content in the liquid and will remove
gaseous content from flow rate and totalizer readings. Outputs from
the flow meter include 4-20 mA analog, turbine frequency output/
pulse output.
Display Options
1) ABS Enclosure-Blind (no display)
2) ABS Enclosure-Display (rate & total)
3) Polycarbonate Enclosure-Blind
4) Polycarbonate Enclosure-Display
Pipe Size
A) ½” ANSI Pipe
B) ¾” ANSI Pipe
C) 1” ANSI Pipe
D) 1¼” ANSI Pipe
E) 1½” ANSI Pipe
F) 2” ANSI Pipe
G) ½” Copper
H) ¾” Copper
I) 1” Copper
J) 1¼” Copper
Connector Options
N) ½-inch Conduit Hole
A) Water-tight Cable Clamp
C) 4-Pin Brad Harrison Connector (male)
D) Flexible Conduit Connector
Output Options
1) 4-20 mA and Pulse
D T F X L 1 N N
Model Number Matrix
Figure 3
TFXL
Sound Path
Accessories Part Number
PC Cable w/Ultralink Software D010-0204-001
90-240VAC Power Supply D005-2502-005
K) 1½” Copper Pipe
L) 2” Copper Pipe
M) ½” Tubing
N) ¾” Tubing
P) 1” Tubing
Q) 1¼” Tubing
R) 1½” Tubing
S) 2” Tubing
X) Remote Transducer

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SPECIFICATIONS/OPERATING CONDITIONS
For a complete table of specifications, see Data Sheet DTFXL
Description Specification
Input Voltage 11-30 VDC @ 0.25A
Flow Range Reference
Sch 40 ½” Pipe
Sch 40 ¾” Pipe
Sch 40 1” Pipe
Sch 40 1¼” Pipe
Sch 40 1½” Pipe
Sch 40 2” Pipe
0.8 to 40 FPS [0.25 to 12.4 MPS]
0.5 to 25 GPM [20 to 850 BPD]
1.0 to 55 GPM [40 to 1800 BPD]
2.0 to 100 GPM [80 to 3400 BPD]
4.0 to 150 GPM [170 to 5000 BPD]
5.0 to 220 GPM [170 to 7500 BPD]
8.0 to 400 GPM [275 to 13500 BPD]
Accuracy ±1% of rate above 1 FPS [0.3 MPS]
Environment Indoor use
Ambient Temperature General Purpose: 0 to +185°F [-20 to +85°C]
Hazardous Area: 0 to +105°F [-20 to +40°C
Altitude Up to 2000 meters
Humidity -20º to 31ºC; 80% max; decreasing linearly to
50% at 40ºC
Transient Overvoltages According to installation category 1, in accor-
dance with IEC 664
Pollution Degree 2 in accordance with IEC 664
Enclosure Material ABS/Polycarbonate
Approvals General Requirements: ANSI/ISA 82.02.01;
Hazardous Location: ANSI/ISA 12.12.01
Class I Div 2, Groups C & D
4-20 mA Output 12-bit, sourcing, DC ground referenced
Pulse Output Turbine Frequency Output/Pulse Output—
Switch Selectable, non-ground referenced AC/
Ground referenced square wave, 0-1,000 Hz,
100mVpp minimum/5VDC.
SYMBOL EXPLANATIONS
Caution—Refer to accompanying documents
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FLOW METER COMPONENTS AND TERMINOLOGY
The pictures on the following two pages reference key
components and their respective terminology of the TFXL
flow meter. These terms are utilized throughout this
manual.

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SOUND GUIDES
CLAMP
PC INTERFACE
CABLE

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FLOW METER INSTALLATION
IMPORTANT NOTE:
Not following instructions properly may impair
safety of equipment and/or personnel.
IMPORTANT NOTE:
Must be operated by a power supply suitable
for the location.
IMPORTANT NOTE:
Do not connect or disconnect either power or
outputs unless the area is known to be non-
hazardous.
IMPORTANT NOTE:
Do not connect the interface cable between a
TFXL and a personal computer unless the
area is known to be non-hazardous.
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