FU-TX 320 Clamp-on Ultrasonic Flowmeter

Taiwan-made clamp-on design allows installation without stopping or cutting pipes. Easy maintenance and disassembly reduce costs. External installation ensures zero pipe damage, no blockages, leaks, or pressure issues.

Pipe Size:	TM1：2"～16" (DN 50 ~ 400)
Velocity range:	± 0.1~20 m/s
Applicable Fluid:	Clearwater, oil, or
	chemicals with minimal impurities
Fluid Temp:	Standard Probe: 0~80°C
	Heat-resistant Probe: 0~150°C
Accuracy:	< 2% F.S.
Waterproof:	Standard probe IP61
	Chemical-resistant probe IP68
Power Supply:	9~30VDC
	100-240 50/ 60Hz AC transformer
Input/Output:	Analog output 4-20mA
	Modbus RS485 two-wire
Fluid Temp:	Two sets of external PT1000
	-100~300°C with 0.1°C resolution

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Clamp-on Ultrasonic Flow Meter

The clamp-on ultrasonic flow meter uses sensors attached to the pipe, requiring no cutting or flow interruption. It is ideal for situations where downtime is not an option and contamination-free measurement is needed. It prevents leakage and pressure issues while ensuring consistent accuracy across different flow conditions.

Principle and Technology

The FU-ES ultrasonic flow meter with EchoSense technology calculates flow rate using the formula: Flow Rate = Pipe Area × Flow Velocity. It measures the time difference between faster downstream (A to B) and slower upstream (B to A) signals to determine flow velocity and, consequently, the flow rate.
Learn more: How to Calculate Flowrate

Split Design for Remote Monitoring

The FU-TX series ultrasonic flow meter features a split design, with the sensor clamped to the pipe and the display unit is placed in a convenient location for monitoring and operation. Ideal for large elevated pipelines and remote monitoring, such as chilled water systems and long-distance oil and gas pipelines.
For smaller pipes : FU-ES Ultrasonic Flow Meter

Patented Metal Clamp

LORRIC's patented FU-TX metal clamp offers a distinct advantage over traditional flow meter brackets. Its unique design allows for precise alignment of the probes, enabling easy installation even in tight spaces, with flexible positioning options. The clamp is suitable for both same-side and opposite-side installations and is designed to resist loosening due to gravity.

Applicable to variety of fluids, pipe materials and diameters

FU-TX ultrasonic flowmeter is versatile, working with water, oil, and chemicals. It's compatible with stainless steel, PVC, and even PP, PVDF piping materials. With applications ranging from 2-inch to 16-inch pipes.

Multiple Communication Outputs

FU-ES supports various communication modes like Analog output with self-powered 16-bit 4-20mA, Modbus RTU RS485. No need for additional communication modules – we've got you covered!
Learn more:
•What is Analog Output
•What is Modbus RTU RS485

Higher Accuracy with Upgraded EchoSense Technology

Improved EchoSense signal processing delivers higher measurement accuracy, better linearity, and reduced zero drift. Built for stable and reliable flow measurement in industrial applications.

Stable Measurement with Anti-Noise Technology

Advanced anti-noise filtering reduces the impact of bubbles, flow disturbances, and signal interference, ensuring more consistent and dependable readings.

Improved Firmware & User Experience

Upgraded firmware with a more intuitive UI/UX design for simpler setup, faster configuration, and smoother operation.

Optional Temperature Sensor Integration

Expand monitoring capability with an optional external temperature sensor.

Patch-type sensor
Stainless steel tube sensor

Flexible design for different installation needs and process environments.

Multiple Connector Options for Easy Installation

Standard waterproof connector ensures reliable industrial use.

Optional M12 connector type is available for standardized wiring and easier system integration.

Multiple Mounting Options

Standard model supports screw-mount installation on flat surfaces for quick setup.

Optional DIN rail backplate module is available for control cabinet integration (DIN rail not included).

Flexible Power Supply Options

Choose the power setup that fits your system:

24 VDC external power via 8-pin cable with flying leads (standard)
Optional universal AC to 24 VDC adapter for wider input compatibility

Track Energy Usage to Achieve ESG Goals

The LORRIC FU-TX 310 ultrasonic flow meter features data collection capabilities and can be installed without disrupting equipment operations, helping to prevent business losses. By accurately tracking energy consumption and reducing maintenance costs, it supports effective energy monitoring and reporting, aligning with ESG goals.

[待編輯]產品_文與圖

[待編輯]這產品為單件式，可以直接鎖附在管路上使用。然而，由於噴嘴是消耗品，使用時間和環境的變化會影響噴灑效果，如流量和噴射角度，因此需定時保養或更換。如果使用條件較為嚴苛，而導致需要頻繁進行維護或更換，我們另有多件式快拆噴嘴，可直接快拆更換噴頭，以節省您的維護與更換的時間。

Product Specifications

1. Mechanical Specifications
Installation method	Clamp-On
Max. pipe wall working temperature	Standard: 0 ~ 80°C
Max. pipe wall working temperature	High-temp: 0 ~ 150°C
Host ambient working temperature	-10 ~ 60°C (14 ~ 140°F)
Applicable pipe size	DN 50 - 400
Power requirement	DC 24V 200mA
Response time	≤ 0.5 ~ 1 second

2. Measurement Specifications
Applicable fluid	Liquids with no or small amount of impurities and bubbles
Linearity	± 0.5 % FS (> 0.3 m/s)
Repeatability	± 0.4 %
OR tolerance	10% to 100% of F.S.: ±3.0% OR / 0% to 10% of F.S.: ± 0.3% FS*
Measurement principle	Ultrasonic Time of Flight (ToF)
Measurement range	0.5 ~ 8 m/s
Instantaneous data	Instantaneous flow rate, instantaneous flow velocity
Cumulative data	Cumulative flow (positive, negative or net flow selectable)
Temperature measurement	3-wire PT100
Temperature range	-20 ~ 150°C
Waterproof rating**	Wall-mount host: IP67
Waterproof rating**	Probe: Standard IP61 / IP68 (optional)

* The measurement accuracy of this product is calibrated under controlled laboratory conditions using clean water at room temperature and CNS UPVC pipe fittings. In real-world applications, actual measurement results may differ from laboratory data due to variations in fluid properties, pipe conditions, installation location, and environmental factors.
** IP66 stands for Ingress Protection 66. The IP rating is a classification system for the degree of protection provided by enclosures of electrical equipment against the intrusion of foreign objects. The IP rating format is IPXX, where XX represents two Arabic numerals. The first digit indicates the level of protection against contact and foreign objects (used to denote dust protection), and the second digit indicates the level of waterproof protection. The higher the number, the better the protection. The first "6" in IP66 means: completely prevents dust ingress; the second "6" means: no harm from high-pressure water jets.

3. Electrical Specifications
System Power
Power specification	24V 200mA (4-20mA and RS485 currents not included)
Reverse voltage protection	Yes
Optocoupler Output
Power specification	5V ~ 30V 200mA
Reverse voltage protection	Yes
NPN wiring	Supported
PNP wiring	Supported
Max. output frequency	700Hz
Over-current protection	200mA
Analog Current Output (4-20mA, 0-20mA)
Wiring	3-wire
Power	Shared with host power, no separate power needed
Output range	0-20 mA or 4-20 mA (selectable)
Max. output range (incl. error signal range)	0 ~ 21.6 mA (0 ~ 20 mA mode) / 2.4 ~ 21.6 mA (4-20 mA mode)
Resolution	16-bit (0 ~ 24 mA physical range)
Response time	≤ 0.5 ~ 1 second, same update rate as the display
Max Loop resistance	600 ohm @ 24V
Digital Communication Modbus RTU RS485
Baud rate	9600, 19200, 38400, 57600
Wiring	2-wire
Max. nodes per network	256

4. User Interface
Language	English, Traditional Chinese, Simplified Chinese
Unit	Volume: L, ft³, Imp gal, US gal, m³ Time: Minute, Second, Day, Hour Velocity: m/s, ft/s
Display	3-color backlight, 3-line 16-character LCD
Display effective digits	LCD 10 digits (plus sign and decimal point)
Operation buttons	4-key touch buttons
Wired communication	Analog output self-powered 4-20mA / 0-20mA Modbus RTU RS485, 2-wire Optocoupler switch signal (2-meter signal cable included)

Size

Unit：mm

How to Order — FU-TX320

Use the selections below to build your order code. Steps 1–5 configure the main unit; the clamp set is ordered separately with its own part number.

Make a selection for each of the 5 steps. Options marked (Standard) are the default configuration.
Options marked ⚠ Confirm with sales require availability confirmation before ordering.
Select your clamp installation method and pipe size to generate the clamp set code.
Your order codes update live in the “Your order code” section below — copy and include them in your order inquiry.

Temperature sensors must be specified at time of order — they cannot be added after shipment.

Please select your main unit configuration:

1Power supply

— Select power supply —

External 24 VDC supply via 8-pin cable with flying leads (Standard)

Global AC to 24 VDC adapter (universal input)Currently unavailable

2Transducer cableIP rating & connector type

— Select transducer cable —

IP61 TM1 — waterproof connector (Standard)

IP68 TM1 — waterproof connectorAdditional charge

IP61 TM1 — M12 connectorAdditional charge

IP68 TM1 — M12 connectorAdditional charge

3Temperature sensorOptional add-on · enables BTU metering

— Select temperature sensor option —

None (Standard)

10 m PT100 — stainless steel tube type, 1 pairAdditional charge

10 m PT100 — patch type, 1 pairAdditional charge

3 m PT100 — stainless steel tube type, 1 pairCurrently unavailable

3 m PT100 — patch type, 1 pairCurrently unavailable

⚠ Please confirm availability with sales before placing your order. Temperature sensors cannot be retrofitted after shipment.

4Mounting

— Select mounting type —

Screw-mount onto flat surface (Standard), screws not included

DIN rail backplate module, DIN rail not includedAdditional charge

5Communication & power cable

— Select cable option —

2 m, 8-pin cable with flying leads (Standard)

2 m, 8-pin cable + 110 VAC 60 Hz to 24 VDC transformerCurrently unavailable

Please select your clamp set: (ordered separately with its own part number)

Pipe size:

— Select pipe size —

2"–3" nominal pipe (DN50–DN80)

3"–4" nominal pipe (DN80–DN100)

4"–5" nominal pipe (DN100–DN125)

5"–6" nominal pipe (DN125–DN150)

7"–8" nominal pipe (DN175–DN200)

* Note on clamp availability: The sizes listed reflect current inventory. Once stock is depleted, replacement sizes will be provided: 460 mm clamps → 420 mm, 320 mm clamps → 310 mm, with alternating strap attachment positions.

Your order code

Main unit code: FU-TX320 — — — — — — — — — —

Clamp set code: —

* Options marked Additional charge are subject to additional fees beyond the standard configuration. Please contact LORRIC sales for a quote when making your inquiry.
* Some options shown above are not yet available to order. Please contact LORRIC sales for updates on availability.
* Temperature sensor options are custom add-ons that must be specified at time of order — they cannot be added after shipment. If a factory calibration report is also required, please notify us when ordering as it cannot be arranged afterwards and is subject to an additional charge.
* Pipe sizes refer to nominal pipe diameter (NPS). DN equivalents shown for reference. Contact sales if your pipe OD falls between standard sizes.

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