What is Strap on Ultrasonic Flow Meters?

Strap on Ultrasonic Flow Meter is also often called Clamp On Type Flow Meter. The unique feature of Strap on Ultrasonic Flow Meter is that the sensor does not need to be in contact with the medium, which is different from other flow meters.

  • Clamp on type, No need to cut the pipe or do any other changes.
  • No professional product knowledge required, installation and measurement can be done based on the guide.
  • No moving parts or pressure changes involved, installation can be done without stop provide.
Strap on Ultrasonic Flow Meters

Featured Strap on Ultrasonic Flow Meters

Strap on Ultrasonic Flow Meter Working Principle

The strap-on ultrasonic flow meters supplied by Sino-Inst are based on the working principle of the time difference method.

Transit Time Ultrasonic Flow Meter adopts the measurement principle of the time difference method. It uses the ultrasonic wave emitted by the sensor to propagate in the flowing fluid. The sound wave propagation speed in the downstream direction will increase, and the backward direction will decrease. In the same propagation distance, there will be different transmission times. According to the difference between the transmission time and the measured The relationship between fluid velocity measures the fluid velocity.

The flow rate of the fluid is different in different positions in the tube. The flow rate in the center of the tube is faster than the flow rate near the wall of the tube. The flow velocity distribution of the fluid in the pipeline can be represented by the flow velocity cross-sectional distribution diagram.

By setting the flowmeter and considering the cross-sectional distribution of the flow velocity, the average flow velocity can be calculated. Then the volume flow of the fluid can be obtained according to the cross-sectional area of the pipe.

Clamp on Ultrasonic Flow Meter Working Principle

Notes:
V measure fluid velocity
M ultrasonic reflection times
D pipe diameter
θ The angle between the ultrasonic signal and the fluid
T up The time when the downstream sensor transmits the signal to the upstream
T down Time from upstream sensor to downstream
ΔT = T up – T down

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Strap on Ultrasonic Flow Meters Application

Sino-Inst concentrates on the development of flow measurement technology. The products serve real-time flow measurement and participation process control in the production process. The main customer industries are the chemical production process, fine chemical production, cleaning industry, beverage industry, etc.

With the world’s most advanced time measurement chip (time resolution of 50ps), Sino-Inst has developed a series of straps on ultrasonic flow meters.

It takes only 2-3 minutes to complete the whole process from installation to measurement. It also adopts the current popular OLED display, which makes it easy to read in low light conditions.

Strap on Ultrasonic Flow Meters is widely used in the production process flow measurement and monitoring. The application of the product continuously and effectively controls the flow of the fluid, so as to improve the yield of the product and even save the input of the personnel, bringing benefits to the production enterprise.

Strap on Ultrasonic Flow Meters can meet different pipe requirements: stainless steel pipe, carbon steel pipe, copper pipe, plastic pipe(PVC, PVDF, PPR, PPH, HDPE, etc.).

Strap-on-Ultrasonic-Flow-Meters-Application

Strap on Ultrasonic Flow Meters also satisfies different clean fluid measurements: various acids, alcohols, chemical solvents, alcohol, beverage water, Coca-Cola water, etc.

Strap on Ultrasonic Flow Meters Application

Installation Guidelines

Frequently
Asked
Questions

Ultrasonic Clamp-on Flow Meter is composed of an integrated host and external clamp-on sensors. Clamp-on Flow Sensors are available at room temperature and high temperature.

High Accuracy measuring:

Linearity: better than 0.5%, Repeatability: better than 0.2%, Accuracy: better than ±1% 

Ultrasonic Clamp on Flow Meter

Classification of ultrasonic flowmeters

  1. According to the measurement principle

(1) Time difference method ultrasonic flowmeter;
(2) Frequency difference method ultrasonic flowmeter;
(3) Phase difference method ultrasonic flowmeter;
(4) Doppler ultrasonic flowmeter;
(5) Ultrasonic flowmeters for partially full pipes and river channels that combine liquid level measurement and average flow velocity measurement.

  1. According to the way of use

(1) Portable ultrasonic flowmeter;
(2) Fixed (standard pipe section) ultrasonic flowmeter.

  1. According to the installation method of the transducer

(1) Standard pipe section ultrasonic flowmeter;
(2) Clip-on ultrasonic flowmeter;
(3) On-site hole-opening plug-in ultrasonic flowmeter.

  1. According to whether the transducer is in contact with the fluid

(1) Immersion (contact) ultrasonic flowmeter;
(2) Non-invasive (non-contact) ultrasonic flowmeter.

  1. According to the nature of the measured fluid

(1) Liquid ultrasonic flowmeter;
(2) Gas ultrasonic flowmeter.

  1. According to the number of transducer channels

(1) Mono ultrasonic flowmeter;
(2) Two-channel ultrasonic flowmeter;
(3) Multi-channel ultrasonic flowmeter.

Doppler ultrasonic flowmeter is widely used in industry, water conservancy, irrigation, and other industries. It is suitable for flow measurement of full pipe, partial pipe, open channel, etc.

(1) Branch channel flow monitoring (narrow channel)

Water distribution in the irrigation area requires real-time monitoring of the branch canal water level and flow. The traditional method is to measure the water level method. This method has high civil construction costs. The monitoring efficiency is low. The measurement accuracy is not enough.

Doppler ultrasonic flowmeter solves the problem of water measurement in-branch canals in irrigation areas.

Just fix the probe at the bottom of the channel. The device automatically measures the channel water level, flow area, and flow rate in real-time and calculates the instantaneous flow and cumulative flow. The flow rate measurement accuracy can reach ±1%+±1cm/s.

(2) Main channel flow monitoring (wide channel)

The difference between the main canal and the branch canal is that the width of the main canal is wider. Therefore, it is necessary to install multiple sets of Doppler ultrasonic flowmeters to accurately measure the flow velocity at different positions of the section during the operation.

The flow of the entire channel can be accurately measured through the integration method. This method is also applicable to some wide rivers.

(3) Monitoring of urban drainage pipeline flow

With the implementation of smart municipal administration, in order to monitor the operation of urban drainage pipe networks, municipal departments need to monitor the water level and flow of drainage pipes in real-time.

Through the analysis of the water level and flow data, the problems of siltation, overload, overflow, and abnormal water infiltration in the pipeline can be distinguished.

Sino-Inst, Manufacturer for Strap on Ultrasonic Flow Meters. It can measure a single sound-conducting liquid medium of DN 5—6000mm. It can measure even liquids such as water, seawater, oil, and slurry.

Sino-Inst’s Strap on Ultrasonic Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

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