Dynasonics TFX-500w Specifications

Transit Time Ultrasonic Flow Meters

TFX-500w Clamp-On Meter

DESCRIPTION

The TFX-500w transit time ultrasonic flow meter measures
volumetric flow of clean water in pipes 10 in. or smaller. By clamping
on the outside of the pipe, the ultrasonic meter installs without
cutting or tapping the pipe.

FEATURES

• Clamp-on, non-invasive flow meter

• Bidirectional flow measurement system

• Measures flow rate, total and velocity of water flow

• Set up the meter through keypad interface or with
SoloCUE® Flow Device Manager software

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

• Modbus RTU or BACnet MS/TP over RS485 and
BEACON®/AquaCUE® connectivity

BENEFITS

• Reduces installation costs, especially retrofits

◊ Installs without cutting into the pipe

◊ Eliminates flanges and pipe fittings

◊ Eliminates draining and air purging

• Eliminates ingress or leak points in pipes

• No moving parts to maintain

• No pressure head loss

APPLICATION

The TFX-500w meter is well suited for building automation,
water distribution and wastewater collection in new and retrofit
applications. In addition to having lower installation costs than an
inline flow meter, the TFX-500w meter can be installed while the
system continues to operate without interruption.

The TFX-500w meter is suitable for:

• Potable water

• Reclaimed water

• Chiller water

• Boiler feed

• Make-up water

• Condenser water

• Condensate

By connecting the TFX-500w meter to Badger Meter® AquaCUE
or BEACON analytics cloud service, the meter becomes part of a
system that tracks and monitors water use for commercial buildings,
campuses and other large facilities.

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-02183-EN-06 (May 2019)

Product Data Sheet

Specications

SPECIFICATIONS

System

Liquid Types Water containing small amounts of suspended solids or gas bubbles

Velocity Range 0.1…40 ft/s (0.03…12 m/s) bidirectional

Flow Accuracy

Repeatability ±0.2% of reading

Transducer Type Clamp-on ultrasonics

Certifications

DTTR/DTTN
DTTC
Easy Rail (DTTJ, DTTK)

Remote mount transmitter and
integral mount transmitter with
transducers

Transmitter

±1% of reading or ±0.01 FPS (0.003 MPS), whichever is greater
DTTC 3/4 in. and smaller are accurate to ± 1% full scale

General Safety (option): FM Class 3810:2018, ANSI/ISA 61010-1:2012, ANSI/IEC 60529:2004,
CAN/CSA-C22.2 No. 61010-1:2012, CSA C22.2 No. 60529:2005
CE: EMC Directive 2014/30/EU

Power
Requirements

Display

Enclosure IP66; polycarbonate

Ambient
Temperature

Units of
Measure

Mounting Wall or pipe remote mount or integral mount; Enclosure can be rotated in 90° increments

Inputs Digital input 5…30V DC, 3.48k Ohm impedence, externally or internally sourced; totalizer reset or alarm unlatch

Outputs

Networks

Configuration
Port

Alarms Buffer previous alarms, warnings or errors

Languages English, French, German and Spanish selectable

Security Four levels: Read-only, Operator, Service and Admin; 6-digit passcode number; selectable auto logout

DC Class II power supply is required; 9…28V DC @ 5 W maximum

Protection Reverse polarity and transient suppression

Keypad 4-button navigation, membrane keypad with domed tactile feedback

Resolution 128 × 64 pixel LED backlit graphical display; adjustable brightness and timeout

Operational ambient With display: –4…140° F (–20…60° C); without display: –40…158° F (–40…70° C)

Storage –40…176° F (–40…80° C)

Velocity feet/second, meters/second

Totals

Flow rate

Pulse / Frequency /
Digital /

Analog Output 0…20 mA and 4…20 mA drive up to 800 Ohms; minimum 16-bit resolution, isolated

EIA-485 with
selectable protocols

Endpoints Connectivity to AquaCUE or BEACON cellular endpoints

USB, Type mini-B

US Gallons, Million Gallons, Imperial Gallons, Million Imperial Gallons, Acre-Feet, Barrels, Liters, Hectoliters,
Cubic Meters, Cubic Feet

Acre Feet/Day, Liters/Second, Liters/Minute, Liters/Hour, Cubic Meters/Second, Cubic Meters/Minute, Cubic
Meters/Hour, Cubic Feet/Minute, Cubic Feet/Minute, Cubic Feet/Hour, Gallons/Second, Gallons/Minute, Gallons/
Hour, Million Gallons/Day, Imperial Gallons/Second, Imperial Gallons/Minute, Imperial Gallons/Hour, Barrel/
Minute, Million Imperial Gallons/Day, Barrel/Day

Two outputs, each selectable as frequency, pulse, forward/reverse flow or alarm output; isolated open collector,
5…30V DC, 50 mA maximum, externally or internally sourced with pullup resistor
Digital alarm output: configurable high or low
Frequency output: 63 Hz…10 kHz maximum
Pulse (totalizer) output: 100 Hz maximum output open collector, pulse width 5…500 ms programmable

Modbus RTU, baud rates 9600, 19200, 38400, 57600, 76800, 115200
BACnet MS/TP, baud rates 9600, 19200, 38400, 57600, 76800, 115200

Page 2 May 2019TTM-DS-02183-EN-06

Transducers

Specications

Model Construction Cable Length Pipe/Tubing Sizes

DTTC

DTTR

DTTN

DTTN
Submersible

Easy Rail
(DTTJ/K)

* DTTC integral mount temperature is limited by the transmitter temperature rating

CPVC, Ultem, Nylon cord grip
Polyethylene cable jacket; –40…194° F (–40…90° C)*

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…194° F (–40…90° C)

CPVC, Ultem, Nylon cord grip
Polyethylene cable jacket; –40…194° F (–40…90° C)

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

100 ft (90 m) max. 0.5…2 in. (12…50 mm)

300 ft (90 m) max. 2.5…10 in. (DN65…DN250) NEMA 6/IP67

300 ft (90 m) max. 2.5…10 in. (DN65…DN250) NEMA 6/IP67

300 ft (90 m) max. 2.5…10 in. (DN65…DN250) NEMA 6P/IP68

100 ft (30 m) max.

2.5…6 in. (DN65…DN150)

2.5…10 in. (DN65…DN250)

Pipe/Tubing

Materials

Carbon steel,

stainless steel,

copper and

plastic

Conguration Software

The flow meter can be programmed and configured with the SoloCUE Flow Device Manager software. The software also has
troubleshooting tools for diagnosing and correcting installation problems.

SoloCUE Used to configure and troubleshoot flow meter. Software is compatible with Windows® 7 SP1 or newer

Protection

NEMA 6/IP67

NEMA 6/IP67

Figure 1: SoloCUE setup screen

Figure 2: SoloCUE diagnostics screen

Additional Parts Required for Configuration

Part Number Description

RC820648 USB Type A to mini B software cable (shielded to minimize noise)

Page 3 May 2019 TTM-DS-02183-EN-06