> 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-es-echosense-instruction-manual/dimensions-specifications-and-model-numbers.md).

# Product Appearance, Specifications, and Model

## **Exterior**

<figure><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FOvWlWkHWWmlKly3RNe2w%2FEchoSense-views-en.png?alt=media&amp;token=0e06800e-e92a-4283-b78a-c2b3e20ee1e1" alt=""><figcaption></figcaption></figure>

## **Exploded views**

<figure><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FNwIlpOnTwQQ6Iu7O25It%2FEchoSense-Exploded-views-en.png?alt=media&amp;token=00e2a709-40b0-4c04-9029-962d02544b9f" alt=""><figcaption></figcaption></figure>

<figure><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FkjKG2hh0KOv462QQzWPf%2F%E6%88%AA%E5%9C%96%202026-03-12%20%E4%B8%8B%E5%8D%882.32.24.png?alt=media&amp;token=9d4a8318-9720-4002-aea3-050e9f89d89d" alt=""><figcaption></figcaption></figure>

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

<figure><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FhKQBsZEjbBsgcElzAzbz%2Ffu-es-set1-size-web2.jpg?alt=media&amp;token=88834a40-a978-49cf-9f84-7b6bd6bac909" alt=""><figcaption></figcaption></figure>

<table><thead><tr><th width="86.623046875">Spec</th><th width="82.90234375">A</th><th width="69.1767578125">B</th><th width="70.6123046875">C</th><th width="73.6640625">D</th><th width="68.48828125">E</th><th width="71.681640625">F</th><th width="108.15625">G</th><th>H</th></tr></thead><tbody><tr><td>FU-ES015</td><td>169.85</td><td>115</td><td>64</td><td>79</td><td>3</td><td>2.5</td><td>120.53</td><td>54</td></tr><tr><td>FU-ES020</td><td>169.85</td><td>115</td><td>64</td><td>79</td><td>3</td><td>2.5</td><td>124.02</td><td>54</td></tr><tr><td>FU-ES025</td><td>169.85</td><td>115</td><td>64</td><td>79</td><td>3</td><td>2.5</td><td>133.52</td><td>54</td></tr><tr><td>FU-ES032</td><td>169.85</td><td>115</td><td>64</td><td>79</td><td>3</td><td>2.5</td><td>143.02</td><td>54</td></tr></tbody></table>

<figure><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FGNZx3xqr2V3nF0zmOokV%2Ffu-es-set2-size-web1.jpg?alt=media&amp;token=9e77e767-d649-4092-8080-055bc7ca755f" alt=""><figcaption></figcaption></figure>

<table><thead><tr><th width="96.173828125">Spec</th><th width="90.1044921875">A</th><th width="65.6171875">B</th><th width="87.326171875">C</th><th width="59.279296875">D</th><th width="74.3232421875">E</th><th width="91.9794921875">F</th><th width="75.978515625">G</th><th>H</th></tr></thead><tbody><tr><td>FU-ES040</td><td>184.90</td><td>64</td><td>125.22</td><td>4</td><td>2.5</td><td>164.12</td><td>53.50</td><td>69.50</td></tr><tr><td>FU-ES050</td><td>184.90</td><td>64</td><td>125.30</td><td>4</td><td>2.5</td><td>178.12</td><td>53.50</td><td>69.50</td></tr><tr><td>FU-ES065</td><td>184.90</td><td>64</td><td>126.87</td><td>4</td><td>2.5</td><td>193.12</td><td>53.50</td><td>69.50</td></tr><tr><td>FU-ES075</td><td>184.90</td><td>64</td><td>128.55</td><td>4</td><td>2.5</td><td>207.12</td><td>53.50</td><td>69.50</td></tr></tbody></table>

<p align="center"><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2Fw9qveOsxumALKxwg0Wjq%2FWiring-connector.jpg?alt=media&amp;token=3dbff43c-6600-4552-899d-738b272e904c" alt=""><br></p>

## **Product Specifications**

### **1. Mechanical Specifications**

| Installation method                      | Clamp-On                                                                                                                                                  |
| ---------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Maximum working temperature of pipe wall | 85°C (non-UL)                                                                                                                                             |
| 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.)                        |
| Applicable pipe size                     | DN15-75 (1/2" to 3")                                                                                                                                      |
| Power supply                             | DC 12V to 36V 200mA                                                                                                                                       |
| Response time                            | ≤0.5 to 1 s                                                                                                                                               |
| Ingress Protection                       | IP66<mark style="color:red;">\*</mark>                                                                                                                    |
| Device Materials                         | <ul><li>Plastics (PPS+GF, PC+GF, PA66+GF, PET, PMMA, Nylon)</li><li>Metals (304 Stainless Steel)</li><li>Electronic Components</li><li>Silicone</li></ul> |

<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.

### **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>Repeatability</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>Transient data</td><td>Instantaneous flow volume and flow velocity</td></tr><tr><td>Totalized data</td><td>Cumulative flow (optional positive, negative or net flow)</td></tr></tbody></table>

<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         | 12V \~ 36V 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>Loop Resistance</td><td><p>1100 ohm @ 36V</p><p>600 ohm @ 24V</p><p>250 ohm @ 12V</p></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                | Metric: Liter, cubic meters, meters Imperial: foot, Cubic foot, Uk gallon, US gallon Time: second, minute, hour, day         |
| Display             | <p>Double screen display : </p><p>Large 5-Digit LED, 16x3 3-Color Backlight LCD display</p>                                  |
| Display digits      | <p>LED 5 Digits (4 digits when negative value) </p><p>LCD 10 Digits (Not including sign and decimal point)</p>               |
| 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-ES Device \* 1
* 2m 8 pin cable \* 1
* Quick starting manual \* 1

<figure><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2F1uuI7jcXatG81MuivBAb%2FFU-ES-shipped-parts.jpeg?alt=media&amp;token=ce5f0022-ec78-4a19-a903-ba268c028d08" alt=""><figcaption></figcaption></figure>

## **Size, material, model**

<table data-header-hidden><thead><tr><th width="355.53515625">Parts</th><th>Material</th></tr></thead><tbody><tr><td>Screws for top side housing</td><td>Stainless steel 304</td></tr><tr><td>Screen cover</td><td>PMMA</td></tr><tr><td>Whole housing without screen cover</td><td>PC+GF</td></tr><tr><td>Buttons</td><td>PET</td></tr><tr><td>2 meters long 8 pin cable with insulation cover</td><td>Nylon</td></tr><tr><td>Middle lid</td><td>PPS+GF</td></tr><tr><td>Lower lid</td><td>PPS+GF, Silicon</td></tr><tr><td>Buckle</td><td>PPS+GF, PA66+GF, Silicon, Stainless steel 304</td></tr></tbody></table>


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