With clamp-on installation, the non invasive flow meter is easy to install, convenient to operate, and less maintenance, suitable for virtually all pure liquids like water, gasoline, oils and so on. High accuracy, good repeatability and low price.
Specification
Model |
ATO-TDS-2100H |
Accuracy |
±1% of reading @ flow rate >0.2m/s |
Linearity |
0.50% |
Repeatability |
0.20% |
Response Time |
0-999 seconds, user-selectable |
Velocity |
0.2~32m/s |
Pipe Size |
40mm-1200mm |
Totalizer |
7-digit totals for net, positive and negative flow respectively |
Liquid Type |
Virtually all liquids |
Transducer (Optional)* |
Standard clamp-on transducers: small/medium/large; High-temperature clamp-on transducers: small/medium/large (See the "Transducer Selection" table below for the details) |
Protection Grade |
Transducer: IP67 |
Transducer Cable Length |
Standard 5m x 2 |
Operating Temperature |
Main unit: -30°C~90°C, Transducers: -30°C~160°C |
Operating Humidity |
Main unit: ≤85%RH |
Power Supply |
3 AAA built-in Ni-H batteries (Can work over 12 hours after a full charge), external charger with 100V-240VAC |
Display |
4 x 16 English letters |
Signal Output |
OCT output (6~1000ms) |
Data Logger |
Built-in data logger, can store over 2000 lines of data |
Housing Material |
ABS |
Main Unit Size |
100*66*20mm |
Main Unit Weight |
500g with batteries |
Download Attachments |
Ultrasonic Flow Meter User Manual |
Dimension (unit: mm)

Features
- Convenient use, fast testing & less maintenance. The non invasive ultrasonic flow meter can measure the liquid flow rate inside the pipe without disassembling the pipe and pressure loss
- Applicable for various pure liquids including water, tapwater, seawater, beers, lubricants, gasoline, cooking oil, etc.
- Compatible with various material pipes like cast iron pipe, galvanized pipe, stainless steel pipe, PVC pipe, aluminum pipe, etc. The ultrasonic flow meter with the proper clamp-on transducer does well in these applications.
- Measuring diameter covers a wide range of DN40-DN1200, suitable for all kinds of industrial site installation and use.
- Big LCD display the instantaneous flow rate and cumulative flow rate at the real time.
- Built-in data logger, the ultrasonic flowmeter can storage 2000 lines of data.
Details

- Ultrasonic flow meter is bilingual windowed operation, with backlight night can also be clearly read.
- Standard aviation plug interface design, easy to disassemble and install upstream and downstream interface labeling, concise and clear.
- Communication interface is a standard RS232 interface, support the upper computer real-time communication.
Transducer Selection
Transducer |
Measuring Pipe Size Range |
Temperature Range |
Dimensions |
Standard clamp-on transducer - Small |
DN40-DN100 |
-30°C~90°C |
45*25*32mm |
Standard clamp-on transducer - Medium |
DN50-DN700 |
64*39*44mm |
Standard clamp-on transducer - Large |
DN300-DN1200 |
97*54*33mm |
High-temp clamp-on transducer - Small |
DN40-DN100 |
-30°C~160°C |
45*25*32mm |
High-temp clamp-on transducer - Medium |
DN50-DN700 |
64*39*44mm |
High-temp clamp-on transducer - Large |
DN300-DN1200 |
97*54*33mm |
Transducer Installation
1. Choosing right installation position

- The pipeline where the transducer is installed must have a long enough straight pipe section, of course, the longer the better, generally 10 times the pipe diameter upstream, 5 times the pipe diameter downstream, and 30 times the pipe diameter from the pump port. At the same time, ensure that the liquid in this section must be full.
- Make sure that the temperature range of the pipe under test is within the applicable range of the sensor, usually at room temperature.
- Take the corrosion or scaling of the pipeline into consideration. It is better to choose a newer pipeline for the measurement. If it is not available, subtract the corrosion from the pipe wall thickness or consider scaling as the pipe lining.
2. Transducer installation method
- Z-installation method: generally suitable for the pipes above DN100mm

- V-installation method: generally suitable for the DN20-300mm pipes

* The installation distance is shown after entering the pipe parameters into the ultrasonic flow meter.
Tips: How to install portable clamp-on ultrasonic flow meter?
Installation of portable clamp-on ultrasonic flowmeter is very simple. Simply clamp the sensor on the outside of the pipe and ensure that the sensor and pipe surface contact is good. In the setup process, the user needs to ensure that the sensor and the pipe contact surface clean, and in accordance with the requirements of the equipment manual to choose the appropriate installation location. After installation, the device will be automatically calibrated to ensure the accuracy of the measurement.
Portable ultrasonic flow meters are widely used in a variety of fields, especially the need for temporary or rapid measurement of the flow rate of the occasion. Common applications include: Water treatment industry, petrochemical, heating, ventilation and air conditioning (HVAC), energy management, power industry. Because it does not need to destroy the pipeline and easy to carry, it is particularly suitable for emergency flow detection, equipment maintenance and on-site diagnosis and other scenarios.