The SI-3402 portable ultrasonic flow meter, equipped with a mini printer, is used to measure the flow rate of liquids in closed pipelines. Its sensor is non-contact and adhesive, making installation and operation simple and easy.
It features an RS485 communication interface, allowing the upload of set parameters and measurement results to a host computer. It supports various input and output signals: Output signals: 4-20mA, pulse signal, relay signal; Input signals: 3 channels of 4-20mA.
| Diameter | DN15~ DN6000 |
| Accuracy | ±1% |
| Temp. range | -30~160°C |
| Data Record | Thermal printer,external SD card (2G of capacity) |
| Flow rate | 0~±10m/s |
| Liquid type | hot water, chilled water, city water, sea water, waste water, Sewage with small particle content；crude oil, lubricating oil, diesel oil, fuel oil, Chemicals (alcohol, etc. ) ； Plant effluent； Beverage; Ultra-pure liquids, etc. |
| Items | Performance & Parameter | |
| Convertor | Principle | Transit- time ultrasonic flowmeter |
| Accuracy | ±1% | |
| Display | 2×20 character LCD with backlight, support the language of Chinese, English and Italy | |
| Signal Output | 1 way 4-20mA output,electric resistance 0~1K，accuracy 0.1% | |
| 1 way OCT pulse output (Pulse width 6~1000ms,the default value is 200ms) | ||
| 1 way relay output | ||
| Signal Input | 3 way 4-20mA input,accAuracy 0.1%,acquire signals such as temperature,press and liquid level | |
| Achieve to heat maesurement by connecting the temperature transducer PT100 | ||
| Data Interface | Insulate RS485 serial interface,upgrade the flowmeter software by computer,support MODBUS | |
| Data Record | Thermal printer,external SD card (2G of capacity) | |
| Pipe Installation Condition | Pipe Material | Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC, Aluminum, Glass steel product, liner is allowed |
| Pipe Diameter | 15~ 6000mm | |
| Straight Pipe | Transducer installation should be satisfied: upstream10D, downstream 5D, 30D from the pump | |
| Measuring Medium | Type of Liquid | Single liquid can transmit sound wave,such as Water (hot water, chilled water, city water, sea water, waste water, etc.)； Sewage with small particle content； Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.);Chemicals (alcohol, etc. ) ； Plant effluent； Beverage; Ultra-pure liquids, etc. |
| Temperature | -30~160°C | |
| Turbidity | Less than 10000ppm and less bubble | |
| Flowrate | 0~±10m/s | |
| Working Environment | Temperature | Convertor：-20~60C； Flow Transducer：-30~ 160C |
| Humidity | Convertor: 85%RH； Flow Transducer:IP67 | |
| Power Supply | 8 built-in Ni-MH batteries 1.2V(for over 20 hours of operation).90V-260VAC adapter | |
| Power Consumption | 1.5W | |
| transducer | Cable length | Heat Measuremen | Input Signal | |
| SI-3402－ | □ | □m | N No heat measurement | N no output |
| TS | 5×2 | 1 Heat measurement | 1 4-20mA output | |
| TM | 10×2 | |||
| TL | ||||
| TS-HT | ||||
| TM-HT | ||||
| TL-HT | ||||
| HS | ||||
| HM | ||||
| EB-1 | ||||
| HS-HT | ||||
| HM-HT | ||||
| EB-1-HT | ||||
| CT-1 |
Example: SI-3402-HS,HM,TL-5-N-N
Explanation: portable ultrasonic flow meter+ small size mounting bracket transducer+ medium size mounting bracket transducer + large size clamp on transducer+2×5M cable ,no heat measurement, no 4-20mA signal output
Power Stations
Water and Waste Water Management
Building Services
Chemicals and Petrochemicals
Food and Beverage Industry
Portable ultrasonic flow meters feature two sensors that function as both transmitters and receivers. Users simply attach the two sensors to the outside of the pipe at a specific distance. The V-method (two-way sound path), W-method (four-way sound path), or Z-method (relatively mounted, where the sound wave passes directly through the pipe being measured) can be used.
The flow meter controls the two sensors to alternately receive and transmit ultrasonic waves, measuring the propagation time between them and calculating the time difference. This time difference is proportional to the fluid velocity.
We at Sino-Inst supply various types of ultrasonic flow meters, including wall-mounted, handheld, and portable models. They are widely used for flow measurement in various liquid pipelines. Please feel free to contact us for inquiries!
Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.
Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.
Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.
