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The ultrasonic flow meter

The ultrasonic flow meter

● Linearity:0.5%,Repeatability:0.2%,Accuracy:±1%

● Several type transducers for selection ,measuring pipe size  is from 

● DN15mm to DN6000mm

● Adopt low voltage,multi-pulse technology to improve accuracy,useful life and reliability.

● Powerful Recording Function ,record the totalizer data of the last 64 days/64monthes/5yesrs

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An ultrasonic flow meter is a device used to measure the flow rate of liquids or gases in a pipeline. It works by sending ultrasonic waves through the fluid and measuring the time it takes for the waves to travel between two transducers located in the pipe. By comparing the time it takes for the waves to travel upstream and downstream, the flow rate can be calculated. Ultrasonic flow meters are non-invasive, meaning they do not come into contact with the fluid being measured, making them suitable for use with hazardous or corrosive liquids and gases.


Ultrasonic flow meters have several characteristics, including:

Non-intrusive: Ultrasonic flow meters are non-intrusive, meaning they do not require the insertion of a probe into the flow stream. This makes them ideal for use in applications where there is a risk of contamination or where maintenance is difficult.

High accuracy: Ultrasonic flow meters have a high accuracy of measurement, with some models capable of measuring flow rates to within 0.5% of the actual flow rate.

Wide range: Ultrasonic flow meters have a wide flow range, making them suitable for use in a variety of applications, from low flow rates to high flow rates.

Versatile: Ultrasonic flow meters can be used to measure the flow of a variety of liquids, including water, oils, chemicals, and gases.

No moving parts: Ultrasonic flow meters have no moving parts, which means they require minimal maintenance and have a long lifespan.

Non-contact: Ultrasonic flow meters operate on a non-contact basis, which means they do not come into contact with the fluid being measured. This makes them suitable for use in applications where the fluid may be hazardous or corrosive.


Ultrasonic flow meters enable users to perform flow measurement inspections at many points in the flow process without the need for permanent installation. This universal driving time timer has a dual-function button interface, an ergonomic handheld design, and a beautiful backlit color digital display that greatly simplifies setup and data collection. Compared with other traditional flowmeters or ultrasonic flow meter price, it has the characteristics of high accuracy, high reliability, high performance, and low cost. The flowmeter also has other advantages:

TVT technology design. Fewer hardware components, low-voltage broadband pulse transmission, and low power consumption.

Clear, user-friendly menu selections make the flowmeter easy to use.

Daily, monthly and yearly total traffic. The parallel operation of positive, negative, and net flow is displayed cumulatively by a scale factor (span) and a 7-digit number.

Please contact Sincerity ultrasonic flow meter manufacturer.

Product Specification



Main unit


Better than ±1%


Better than 0.2%


Transit-time measuring principle




LCD with backlight,display accumulated flow/heat, instantaneous flow/heat, velocity, time etc.



Analogue output: 4-20mA or 0-20mA current output. Impedance 0~1kW. Accuracy 0.1%.

OCT output: Frequency signal (1~9999HZ)

Relay output: over 20 source signal (no signal, reverse flow etc.)

RS485 serial port


Three analogue input


Three-wire PT100 resistor input (optional)

Other functions

Automatically record the totaliser data of the last 64 days / 64 months / 5 years;
The power-on time and corresponding flow rate of the last 64 power on and off events. Allow manual or automatic flow loss compensation
The instrument working status of the last 64 days



Steel, stainless steel, cast iron, cement pipe, copper, PVC, aluminum, FRP etc. Liner is allowed



Straight pipe section

In the upstream it must be beyond 10D, in the downstream it must be beyond 5D, in the upstream the length must be beyond 30D from the access of the pump. (D stands for pipe diameter)



Water, sea water, industrial sewage,acid & alkali liquid, alcohol, beer, all kinds of oils which can transmit ultrasonic single uniform liquid


Standard: -30℃ - 90℃ ,High-temperature:-30℃ - 160℃


Less than 10000ppm, with a little bubble

Flow Direction

Bi-directional measuring, net flow/heat measuring



Main Unit: -30℃ - 80℃

Transducer: -40℃ -110℃, Temperature transducer: select on enquiry


Main Unit: 85% RH

Transducer: water-immersible, water depth less than 3m


Twisted Pair Line, standard length of 20m, can be extended to 500m (not recommended);      Contact the manufacturer for longer cable requirement.
RS-485 interface, transmission distance up to 1000m

Power Supply


Power Consumption

Less than 1.5W


MODBUS, M-BUS, Fuji extended protocol and other factory protocol


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