How to protect the ultrasonic flow meter using enclosures?

How to protect the ultrasonic flow meter using enclosures?

September 16, 2022by yongubox0

How to protect the ultrasonic flow meter using enclosures?

Before, we move on to enclosures for ultrasonic flowmeter enclosures, it is important to develop a good understanding of ultrasonic flowmeter itself.

An ultrasonic flowmeter is an inline liquid flowmeter uses ultrasound to monitor a fluid’s velocity and determine its volumetric flow.

Generally speaking, ultrasonic meters won’t function with pure water or drinking water, but they’re perfect magnetic flowmeter for wastewater operations or any contaminated liquid that’s conductive or water-based. The minimal pressure drop, chemical adaptability, and ease of maintenance offered by these flow meters make them a top pick for various uses.



Ultrasonic flow meters can be built using upstream and downstream sensors, sensor pipes, and reflectors. The ultrasonic flow meter works by utilizing sound waves to figure out how fast the liquid is moving through the pipe. There are two possible states for the pipe: one with no flow and one with a considerable amount of liquid. There is no discernible difference between the frequency of the ultrasonic waves released into the pipe and the fluid’s indication in the first scenario. In the second scenario, the Doppler effect causes the frequency of the reflected wave to change.

The frequency shift grows linearly when the fluid moves quickly through the pipe. The wave’s reflection ultimately establishes the flow rate, and the transmitter interprets the wave’s signal. The timer transmits ultrasonic waves down the pipe and picks them up at the other end. When no water moves through the pipes, the upstream and downstream flow sensors will read the same amount of time.



The upstream wave will move more slowly than the downstream wave in either case. The time gap between the beginning and end of a journey grows as the liquid moves more quickly. The transmitter uses the timings in either case to calculate the flow rate.



Doppler and transit time are the two basic ultrasonic flow metering systems currently available. When immediate interaction with the fluid is not an option, ultrasonic meters are also known as clamp-on solutions.

The choice of ultrasonic flow meter depends on several variables, including the kind of output (analogue or digital), hydraulic pipe diameter, operating temperature, pressure, and flow rate.



Several different types of industries can benefit greatly from using ultrasonic flowmeters. Ultrasonic flowmeters have many advantages:

  • Conventional mechanical flowmeters include sensors in the form of moving components to monitor pressure. There are several issues with these components. They are a common source of pressure drop and obstruction of flow. The wear and tear on the moving parts also cause the results to decline with time, necessitating periodic maintenance or even replacement. Ultrasonic flowmeters eliminate the need to worry about wear and tear or clogging caused by mechanical parts.



  • Considering that ultrasonic flowmeters have no mechanical components, they require extremely little upkeep and endure for a long period before necessitating replacement. And because of their low power usage, they may last for years without necessitating new batteries.
  • Modern technology has enabled the development of ultrasonic sensors with digital monitoring systems and network connection capabilities, expanding the variety of applications for ultrasonic flowmeters. It allows monitors to provide data to a central monitoring system in real-time.
  • These meters are precise as long as they are set up and placed correctly. However,  ultrasonic flowmeters clamp onto a pipe aren’t as accurate as those that measure fluid flow without a pipe.



However, despite their usefulness, ultrasonic flowmeters are not without limitations. Concerns related to them include:

  • Compared to other in-line flowmeter choices now on the market, ultrasonic flowmeters are incredibly expensive. The reason for this is primarily the high cost of acoustic components. Even if these meters save money in the long run, the initial investment may be too much for several customers.
  • Ultrasonic flowmeters are not suitable for use with slurries or other highly polluted liquids. An ultrasonic flow measuring instrument can’t be used to gauge the velocity of any fluid that blocks the passage of ultrasonic waves.


  • It’s common practice to employ these meters anywhere sewage or a noxious liquid is being measured.



  • These meters are used in situations requiring chemical tolerance, low maintenance, and minimal pressure loss.
  • Volumetric flow analysis is performed using these meters by monitoring the speed of a liquid with ultrasound.
  • The meters determine the direction of liquid flow by measuring the time delay between initiating an ultrasonic pulse and detecting it.
  • These meters have various uses in both process and supervision settings.
  • This instrument can measure the volumetric flow rate of fluids and gases.
  • These are a superior replacement for both electromagnetic and vortex flow meters.



The primary components of an ultrasonic flow meter electronics enclosure box with a suitable IP rating are the electronic housing itself, a lid or access aperture, and a seal between the two. All connections and other gaps in the enclosure must be sealed after the electrical circuit has been safely installed. When it’s done correctly, nothing from the outside can enter. Since it’s an electrical circuit, an ultrasonic flowmeter will produce heat, and the display will likely have buttons or a touch screen for adjusting settings or activating an alert.



The easiest solution to deal with user interface concerns is to embed ultrasonic circuitry inside a waterproof enclosure and utilize a versatile material such as transparent plastic or latex that allows the individual to press a button right under and near the malleable material. Alternatively, you may attach switches and controls with the appropriate IP rating outside the PCB enclosure box and link them to the circuit using wires or a printed circuit.

The greater the efficiency of electrical equipment, the less heat it generates, yet according to the second rule of thermodynamics, nothing can be completely efficient. The temperature within the hermetically sealed electronics enclosure may rise, but it will likely level out far below the maximum ratings for both your components and the PCB.

The most common heat dissipation method is convection, in which cool air is circulated over hot equipment. To solve this problem, we’d have to punch holes in the enclosure to let air in, which would be counterproductive given that we need a sealed ultrasonic enclosure.

The only practical method is conduction, in which heat is lost directly to the surroundings via the enclosure’s walls. The only exception is that the enclosure needs to be constructed from a metal that is an excellent heat conductor, such as aluminium.

It is possible to dissipate heat energy from components by strategically placing them inside the aluminium enclosures body. Using heat-conducting materials, components may be connected to the housing either directly or via the PCB. The conduction effect can be improved once the heat energy has left the enclosure.

The protection from direct sunlight is still another essential aspect that outstanding ultrasonic enclosures can circumvent. It is made possible by the naturally resistant features of the materials used.

The importance of ensuring that electronic gadgets continue to work reliably into the future is growing as we increasingly rely on them in our everyday lives. Engineers and product teams must ensure that the material choice and part design of electronic enclosures are optimized to give an optimum advantage.

If you choose YONGUBOX as your electronics cases boxes manufacturing partner, you will have instant access to our team’s accumulated wisdom and experience of more than a century. We are a manufacturing platform that operates on customer demand for plastic and aluminium electronics enclosure manufacturing and cost-effectively produces high-quality goods.



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