Dynasonics TFXL Specifications

Transit Time Flow Meters

TFXL Ultrasonic

DESCRIPTION

The TFXL ultrasonic transit time flow meter measures most clean
liquids and liquids with small amounts of suspended solids or
aeration, such as surface water or sewage.

FEATURES

• Bi-directional flow measurement system

• Totalizer options include forward, reverse and net total

• UltraLink® software utility enables in-field flow meter
configuration, calibration and troubleshooting, via laptop PC

• Compact enclosure uses large, easy-to-read digital display

BENEFITS

• Reduced material costs: Clamp-on sensor eliminates the need
for in-line flanges, pipe fittings, strainers and filters.

• Reduced installation time: May be installed and fully
operational within minutes. No need to break into pipelines.

• Reduced maintenance costs: With no moving parts, there
is nothing on the TFXL to wear down—no repair kits or
replacement parts are needed.

• Easy retrofit: With three standard outputs (4…20 mA, TTL pulse
and simulated turbine frequency), the TFXL drops easily into
existing DCS and flow monitoring systems.

• Reduced downtime: Installation may be performed on full
pipes. No need to shut the process down for installation
or maintenance.

APPLICATION

The TFXL ultrasonic flow meter clamps onto the outside of a pipe
and does not contact the internal liquid. This advanced product
provides instantaneous rate and accumulated flows along with
4…20 mA and pulse outputs. Compact integral mount systems can
accommodate pipes/tubing two inches and smaller. Remote mount
systems are also available for pipe/tubing sizes 1/2 in. (DN 15)
and higher.

OPERATION

Transit time flow meters use two transducers that function as both
ultrasonic transmitters and receivers. The flow meters operate by
alternately transmitting and receiving a frequency-modulated
burst of sound energy between the two transducers. The burst is
first transmitted in the direction of fluid flow and then against fluid
flow. Since sound energy in a moving liquid is carried faster when it
travels in the direction of fluid flow (downstream) than it does when
it travels against fluid flow (upstream), a differential in the times of
flight will occur. The sound’s time-of-flight is accurately measured in
both directions and the difference in time-of-flight calculated.

TTM-DS-00960-EN-07 (April 2016)

Product Data Sheet

Specications

SPECIFICATIONS

System

Liquid Types Most clean liquids or liquids containing small amounts of suspended solids or gas bubbles

Velocity Range 0.1…40 FPS (0.03…012 MPS)

Flow Accuracy

Ambient
Temperature

Repeatability ±0.5% of reading

Transducer Type Clamp-on, uses time-of-flight ultrasonics

Protection Reverse polarity, surge suppression

Certifications

DTTR/DTTN/DTTH
DTTS/DTTC

General purpose
Hazardous locations integral mount
Hazardous locations DTTN

Remote mount transmitter and
integral mount transmitter with
transducers

Hazardous location transducers
(DTTN with I.S. option)

±1% of reading or ±0.01 FPS (0.003 MPS), whichever is greater
1 in. (25 mm) and larger = ±1 % above 1 FPS (0.3 MPS) and ±0.01 FPS below 1 FPS
3/4 in. (19 mm) and smaller = ±1% of full scale

–40…185° F (–40…85° C)
0…105° F (–17…40° C)
–40…185° F (–40…85° C)

General purpose standards: UL 61010-1 and CSA C22.2 No. 61010-1

Hazardous location designation and standards:
Class I, Division 2, Groups C and D
UL1604, CSA C22.2 No. 213

Hazardous location designation and standards:
Class I, Division 1, Groups C and D, T5
UL913:2002, UL916
CAN/CSA C22.2 No. 0-10, C22.2 No. 142-M1987, C22.2 No. 157-92
Install with I.S. barrier D070-1010-002

Transmitter

Power
Requirements

Display

Enclosure
Rating

Units of
Measure

Outputs

12…28V DC @ 0.25A

Type
Rate
Total

NEMA Type 3 (Type 3) ABS, PVC and Ultem (integral system), brass or SS hardware

Engineering units

Rate

Analog and TTL
Frequency
(Output option 1)

Totalizer pulse
(Output option 3)

2 line x 8 character LCD
8 maximum digits with lead zero blanking
8 maximum digits with exponential multipliers from –1…6

Feet, US gallons, cubic feet, million gallons, barrels (liquid and oil), acre-feet, lbs, meters, cubic meters, liters,
million liters, kilograms
Second, minute, hour, day

4…20 mA: 900 ohms max, internally powered, 12-bit resolution

Selectable turbine meter simulation or square wave
0…1000 Hz, duty cycle 50% +/- 10%
Square wave: 5V DC
Turbine meter simulation: 500 mVpp minimum

Source or sink, 5V DC, 2 mA maximum, pulse duration 30 ms, external resistor
Normal state high with pulses low

Page 2 April 2016TTM-DS-00960-EN-07

Transducers

?

ULTRALINK Software Utility

PBT glass filled, Ultem, Nylon cord grip
PVC cable jacket; –40…250° F (–40…121° C)

CPVC, Ultem, Nylon cord grip
Polyethylene cable jacket; –40…185° F (–40…85° C)

CPVC, Ultem, Nylon cord grip
Polyethylene cable jacket; –40…185° F (–40…85° C)

PTFE, Vespel, Nickel-plated brass cord grip
PFA cable jacket; –40…350° F (–40…176° C)

PVC, Ultem, Nylon cord grip
PVC cable jacket; –40…140° F (–40…60° C)

Transducer
Construction

DTTR NEMA 6*/IP67

DTTC NEMA 6*/IP67

DTTN I.S. NEMA 6P*/IP68

DTTH NEMA 6*/IP67

DTTS NEMA 6*/IP67

*NEMA 6 units: to a depth of 3 ft (1 m) for 30 days max. NEMA 6P units: to a depth of 100 ft (30 m) seawater equivalent
density indefinitely.

Cable Length 990 ft (300 meter) max. in 10 ft (3 m) increments; Submersible Conduit limited to 100 ft (30 m)

Pipe/Tubing Sizes 1/2 in. (12 mm) and larger

Pipe/Tubing Materials Carbon steel, stainless steel, copper and plastic

Software Utilities

ULTRALINK

Used to configure, calibrate and troubleshoot flow meter. Software is compatible with Windows 2000, Windows XP, Windows Vista and
Windows 7

ULTRALINK SOFTWARE UTILITY

The flow meter must be programmed with the UltraLink software utility. The software is used to configure, calibrate and communicate with
TFXL flow meters. Additionally, it has numerous troubleshooting tools to make diagnosing and correcting installation problems easier.

UltraLINK Device Addr 127

U

Conguration CalibrationStrategy

Device Addr 127

U

135 Gal/Min

Flow:

237 Gal

Totalizer Net:

Pos:

237 Gal

Neg:

0 Gal

Sig. Strength:

15.6%

Margin:

100%

Delta T:

2.50 ns

Last Update:

12:17:20

Signal Strength too Low!

Reset Totalizers

Data Display Diagnostics

HelpWindowCommunicationsViewEditFile

!

Print About

Errors

60 Min

2000

1600

1200

800

400

0

Flow Rate

-400

-800

-1200

-1600

-2000

-1.00:00

?

Stop

Step View

Go

Stop

Print Preview

2000

Scale:Time:

-50:00 -40:00 -30:00 -20:00 -10:00 -0:00

Stop

Historical Data

Time (mm:ss)

ADDITIONAL PARTS REQUIRED FOR CONFIGURATION

Part Number Description

D010-0204-001 Configuration cable kit

D005-2116-004 USB-to-DB9 converter (required if PC does not have a serial port)

13:26:33

Exit

OK

COMM:For Help, press F1

Page 3 April 2016 TTM-DS-00960-EN-07