The Handheld Ultrasonic Flow Meter uses clamp-on sensors to non-invasively measure liquid flow. No cutting or modification of pipes is required; simply attach the sensor to the outer wall of the pipe to complete flow measurement. It covers pipe sizes from DN15 to DN6000.
Sino-Inst’s handheld ultrasonic flow meter features a portable design, long battery life, and easy portability. It is widely used in the water supply, heating, water conservancy, and energy industries. It can be used for production monitoring, flow calibration, temporary testing, flow inspections, water balance commissioning, and energy conservation monitoring, making it an essential tool for real-time flow measurement.

| Diameter | DN15~DN6000 |
| Accuracy | ±1% |
| Temp. range | -30~160℃ |
| Special Cable | Twisted-pair cable, under 50 m; RS485,transmission distance can over 1000m |
| Liquid type | Such as Water (hot water, sea water, waste water, etc.); Oil(crude oil, diesel fuel oil, etc. |
Features
Specifications
| Item | Performance and Specifications | |
| Host | Principle | Ultrasonic time difference principle, 4-byte IEEE754 floating-point arithmetic; |
| Accuracy | Flow rate: better than ±1%; | |
| Display | 4 x 16 dot-matrix backlit LCD display, supporting English and Italian; | |
| Signal Output | 1 OCT pulse output (pulse width 6-1000ms, default 200ms); | |
| Data Interface | Isolated RS232 serial port, allowing flow meter upgrades via PC. | |
| Pipeline Condition | Pipe Material | Suitable for all dense pipes, including steel, stainless steel, cast iron, copper, PVC, aluminum, and fiberglass. Lining is permitted. |
| Pipe Inner Diameter | 15-6000mm; | |
| Straight Pipe Section | The sensor installation distance should ideally meet the following requirements: 10D upstream, 5D downstream, and 30D from the pump outlet (D is the pipe diameter). | |
| Measurement Medium | Liquid Type | Suitable for single, uniform liquids that can conduct ultrasonic waves, such as water, seawater, industrial wastewater, acids and alkalis, alcohol, beer, and various oils. |
| Temperature | Temperature: -30-160°C; | |
| Turbidity | 10,000 ppm with minimal bubble content; | |
| Flow Velocity | 0-±10 m/s; | |
| Operating Environment | Temperature | Host: -20-60°C; Flow sensor: -30-160°C; |
| Humidity | Host: 85% RH; Sensor IP67 protection rating. | |
| Power Supply | Three built-in 1.2V 2000mAH rechargeable Ni-MH batteries provide over 12 hours of continuous operation on a full charge. An AC 90-260V power adapter allows for uninterrupted measurement. | |
| Power Consumption | 1.5W | |
| Casing Material | Flame-retardant ABS | |
| Host Weight | 390g | |
Installation note:

Transducer options

Handheld Ultrasonic Flow Meter Applications
Handheld ultrasonic flow meters use external clamp-on sensors to measure liquid flow. They are particularly suitable for flow balance testing and flow monitoring of drinking water, river water, seawater, cooling water, hot water, industrial wastewater, lubricating oil, diesel, fuel, and chemical liquids.
In urban water supply systems, handheld ultrasonic flow meters can be used to monitor flow in water supply pipes, helping water utilities understand urban water usage and promptly detect problems such as leaks.
In some older urban areas, aging water supply pipes are prone to leaks. Regular inspections with handheld ultrasonic flow meters can quickly locate leaks and reduce water waste.
In the wastewater treatment sector, handheld Doppler flow meters are widely used to monitor wastewater discharge flow rates due to their excellent measurement performance for wastewater containing suspended particles and impurities.
Environmental protection departments can use this data to evaluate the operating efficiency of wastewater treatment plants, ensure that wastewater discharge meets standards, and protect the environment.
In agricultural irrigation, handheld ultrasonic flow meters can be used to measure water flow in irrigation channels, helping to rationally allocate water resources and achieve accurate irrigation. This improves water resource utilization efficiency and promotes increased agricultural production and income.

More Flow Measurement Solutions
Handheld ultrasonic flow meters, with their convenience and high accuracy, are becoming an ideal choice for flow measurement. Whether in the water utility or industrial sectors, they provide efficient, accurate, and convenient solutions for flow measurement. Choosing this device will bring you unprecedented measurement convenience.
Sino-Inst handheld ultrasonic flow meters, with their unique operating principle, play an important role in industry, municipal utilities, and many other fields. If you need flow measurement, please feel free to contact us!