> For the complete documentation index, see [llms.txt](https://docs.lorric.com/qr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lorric.com/qr/fu-tx320-english-v1/dimensions-specifications-and-model-numbers.md).

# Product Appearance, Specifications, and Model

## **Exterior**

<figure><img src="/files/hg1e41ebqQvPTsnlFoYv" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/bsipjR99LDwS0wrH3reB" alt="" width="375"><figcaption></figcaption></figure>

## **Models & Dimensions** <a href="#models-and-dimensions" id="models-and-dimensions"></a>

#### **Device Housing Size**

<figure><img src="/files/DhPakUHTA1IZscl1eulm" alt="" width="540"><figcaption></figcaption></figure>

<figure><img src="/files/FQfrLnLZEMdVjwNysdBT" alt="" width="540"><figcaption></figcaption></figure>

<figure><img src="/files/aC90jnWdYgraYUvQbQHp" alt="" width="540"><figcaption></figcaption></figure>

#### TM-1 Tansducer Size

<div><figure><img src="/files/g1G2vLCnOSN2NqJCHCZz" alt="" width="365"><figcaption></figcaption></figure> <figure><img src="/files/1y1FJIYL24j4eExGYWwO" alt="" width="150"><figcaption></figcaption></figure></div>

#### **PT-100 Temperature Sensor Size**

<figure><img src="/files/rnEOEA5thza8PHvyn8wJ" alt="" width="132"><figcaption></figcaption></figure>

## **Product Specifications**

### **1. Mechanical Specifications**

| Installation method                     | Clamp-On                                                                                                                           |
| --------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| Applicable pipe material                | Metal pipe, Plastic pipe (UPVC/PPH/PVDF/PFA/PTFE)                                                                                  |
| Applicable pipe size                    | 2”～16” (DN 50 \~ 400)                                                                                                              |
| <p>Pipe wall<br>working temperature</p> | **Standard:** 0 \~ 80°C \| **High-temp:** 0 \~ 150°C                                                                               |
| Device working environment temperature  | -10\~60°C (14\~140°F) (The higher the temperature of the fluid in the pipe, the lower the upper limit of the ambient temperature.) |
| Power requirement                       | DC 24V 200mA                                                                                                                       |
| Transducer cable length                 | 10 m (Waterproof / M12 connector)                                                                                                  |
| Response time                           | ≤0.5 to 1 s                                                                                                                        |

### **2. Measurement Specifications**

<table data-header-hidden><thead><tr><th width="217.81640625">量測相關規格</th><th></th></tr></thead><tbody><tr><td>Measurement Principle</td><td>Ultrasonic Time of Flight（Time of Flight, ToF）</td></tr><tr><td>Applicable fluid</td><td>Clear, oil or chemicals with less impurities (&#x3C;1%)</td></tr><tr><td>Flow Velocity Range<mark style="color:red;">**</mark></td><td>Recommended: ±0.3 to 6.0 m/s, Measurable: ±0.1 to 8.0 m/s</td></tr><tr><td>Linearity</td><td>± 0.5 % FS (>0.3m/s)</td></tr><tr><td>Repeatbility</td><td>± 0.4 %</td></tr><tr><td>OR tolerance</td><td><p>±3.0% RD (10%-100% F.S.)</p><p>±0.3% F.S. (0%-10% F.S.)<mark style="color:red;">**</mark></p></td></tr><tr><td>Measurement range</td><td>0.5 ~ 8 m/s</td></tr><tr><td>Instantaneous data</td><td>Instantaneous flow volume and flow velocity</td></tr><tr><td>Cumulative data</td><td>Cumulative flow (optional positive, negative or net flow)</td></tr><tr><td>Temperature Measurement</td><td>3-wire PT100</td></tr><tr><td>Temperature rating</td><td>-20 ~ 150°C</td></tr><tr><td>Waterproof rating<mark style="color:red;">*</mark></td><td><strong>Wall-mount host:</strong> IP67 | <strong>Probe:</strong> IP61 <em>(Standard)</em> / IP68 <em>(optional)</em></td></tr></tbody></table>

<mark style="color:red;">\*</mark> <mark style="color:red;"></mark><mark style="color:red;">**IP66 Rating**</mark>\
IP66 stands for Ingress Protection 66. The IP rating is a standard that classifies the degree of protection provided by an electrical enclosure against the intrusion of foreign objects. The format is IPXX, where XX represents two digits: the first digit indicates the level of protection against contact and solid foreign objects (dust protection), and the second digit indicates the level of protection against water ingress. A higher number indicates a higher level of protection. For IP66: the first 6 means complete protection against dust ingress; the second 6 means protection against powerful water jets without harmful effect.

<mark style="color:red;">**\*\***</mark> Measurement accuracy is calibrated under controlled laboratory conditions using clean water at room temperature with CNS UPVC piping. Actual results may vary depending on fluid properties, piping conditions, installation, and environmental factors.

### **3. Electrical Specifications**

* #### **Power supply**

  | **Whole device power supply** |                                                        |
  | ----------------------------- | ------------------------------------------------------ |
  | Working specification         | 24V 200mA (4-20mA and RS485 current are not included.) |
  | Reverse voltage protection    | **Yes**                                                |

  <br>
* #### **OCT output**

  | Power supply spec          | 5V\~30V 200mA |
  | -------------------------- | ------------- |
  | Reverse voltage protection | Yes           |
  | NPN connection             | Yes           |
  | PNP connection             | Yes           |
  | Maximum output frequency   | 700Hz         |
  | Overcurrent protection     | 200mA         |

  <br>
* #### Analog output (4-20mA, 0-20mA)

  <table data-header-hidden><thead><tr><th width="287.984375">Analog output (4-20mA, 0-20mA)</th><th></th></tr></thead><tbody><tr><td>Wiring</td><td>3 wiring</td></tr><tr><td>Power supply</td><td>Device shares power with the main unit, no external power supply required.</td></tr><tr><td>Output range</td><td>0–20 mA or 4–20 mA (selectable)</td></tr><tr><td>Maximum output range<br>(incl. error signal)</td><td>0~21.6 mA (0–20 mA mode) / <br>2.4~21.6 mA (4–20 mA mode)</td></tr><tr><td>Resolution</td><td>16-bit (0–24 mA physical range)</td></tr><tr><td>Response time</td><td>≤0.5 to 1s (matches display update rate)</td></tr><tr><td>Max Loop Resistance</td><td>600 ohm @ 24V</td></tr></tbody></table>

  <br>
* #### Digital communication Modbus RTU RS485

  | Baud             | 9600, 19200, 38400, 57600 |
  | ---------------- | ------------------------- |
  | Wiring           | 2 wiring                  |
  | Nodes on the bus | 32                        |

### **4. User Interface**

| Language            | English, Traditional Chinese, Simplified Chinese (Others customizable)                                                                                                                                            |
| ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Unit                | <p><strong>Metric:</strong> Liter, cubic meters, meters <strong>Imperial:</strong> foot, Cubic foot, Uk gallon, US gallon <br><strong>Time:</strong> second, minute, hour, day</p>                                |
| Display             | <p>Single-screen<br>3-color backlit LCD, 3 lines × 16 characters (English)<br>Line 1: Current parameter and unit<br>Line 2: Measurement data<br>Line 3: Key definitions (see Human-Machine Interface section)</p> |
| Display digits      | 10 digits (plus sign and decimal point)                                                                                                                                                                           |
| Operation buttons   | 4 Key touch buttons                                                                                                                                                                                               |
| Wired communication | Self-powered Analog output 4-20mA (Device after HW1.3) Modbus RTU RS485 Two-line OCT switch signal (ship with 2 meter cable)                                                                                      |

## **Shipping Contents**

Besides other agreed contents, our standard package contains:

* FU-TX320 Display Unit \* 1
* TM-1 transducer pair, pre-wired with IP61 waterproof connector cable\* 1
* 2 m, 8-pin power & communication cable with flying leads (S) \* 1
* Quick starting manual \* 1

Also available as upgrade / add-ons:

* **AC power adapter** (upgrade from standard DC) — Global AC to 24 VDC adapter, universal input
* **IP68 waterproof transducer cable** (upgrade from standard IP61)
* **M12 connector transducer cable** — IP61 or IP68 (upgrade from standard waterproof connector)
* **PT100 temperature sensor, stainless steel tube-type** — 3 m or 10 m (add-on; standard is none)
* **PT100 temperature sensor, patch-type** — 3 m or 10 m (add-on; standard is none)
* **DIN rail backplate module** (upgrade from standard screw-mount) — *DIN rail itself not included*
* 2 m, 8-pin cable + 110 VAC 60Hz to 24 VDC transformer (upgrade from standard flying-leads-only cable)


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