Are ultrasonic flowmeters accurate

Handheld ultrasonic flowmeters are commonly used tool instruments for flow detection. It is designed to enhance the convenience of flow measurement. It features high measurement accuracy, a large range ratio, no pressure loss, no moving parts, and is compact and lightweight. The flow measurement can be completed simply by installing the sensor on the outer wall of the pipeline.

Sewage ultrasonic flowmeters are favored by many users because of their ability to measure without indirect contact with the medium. However, in the daily use of the process, some users encounter the ultrasonic flow meter display is negative, this is what is going on after all?

Ultrasonic flowmeter installation, easy maintenance, cost-effective. However, no matter how good the flowmeter is, it also needs special attention in daily use. Otherwise, it will affect the measuring accuracy and service life of the flowmeter. Today, flowmeter manufacturer Aister meter mainly explains the maintenance and maintenance of ultrasonic flowmeters as follows.

Many times when we measure the flow, we often use a more convenient handheld ultrasonic flowmeter, because the handheld flowmeter has a high accuracy and belongs to the contact measuring instrument, so we should also pay attention to the operating specifications when operating, and a lot of precautions, so today, what are the precautions for using the handheld flowmeter?

Under the premise of fixed installation conditions, ultrasonic flowmeter improves the signal processing capacity and diagnostic capacity of the flowmeter itself, and can effectively reduce noise. Under normal circumstances, the measuring accuracy of the flowmeter is very important.

Ultrasonic flowmeters can generally operate normally for a long time without maintenance in the future. After that, maintenance and daily inspections are required. Not receiving the signal or having a too weak signal are both minor issues. So there’s no need to be surprised if it occurs. Just do the following steps carefully and it will be easy to solve.

Measuring medium: single sound conducting liquid medium
Measuring range: ± 0.03ft /s~ ± 40ft /s (± 0.01m /s~ ± 12m /s)
Accuracy class: ±1%
Pipe diameter range: 1″~48″(25mm~1200mm)
Handheld (portable) ultrasonic flowmeter with external clip-on sensing to measure liquid flow. The installation process is extremely simple, and the all-Chinese man-machine interface makes it easier to operate.

Measuring medium: single sound conducting liquid medium
Measuring range: ± 0.03ft /s~ ± 40ft /s (± 0.01m /s~ ± 12m /s)
Accuracy class: ±1%
Pipe diameter range: 1″~48″(25mm~1200mm)
Handheld (portable) ultrasonic flowmeter with external clip-on sensing to measure liquid flow. The installation process is extremely simple, and the all-Chinese man-machine interface makes it easier to operate.

There are significant differences between pipe-type ultrasonic flowmeters and insertable ultrasonic flowmeters in many aspects. The following is a specific analysis of these differences

Ultrasonic flowmeters are flowmeters that measure flow by detecting the effect of fluid movement on ultrasonic beams (or ultrasonic pulses). Ultrasonic flowmeters can all be installed outside the pipe and measure flow in a non-contact manner. Their surface cost is basically independent of the size of the pipe diameter being measured, making them excellent instruments for measuring the flow of large pipes.

The accuracy of ultrasonic flowmeters in measuring fluid flow is closely related to the on-site working conditions. When selecting the position of the probe equipment, the following conditions should be met:

Ultrasonic flowmeters usually have high accuracy in flow measurement. Ultrasonic flowmeters are easy to install and maintain, which makes them widely used in various fields such as petrochemicals, water conservancy projects, and energy.

Handheld ultrasonic flowmeters are commonly used tool instruments for flow detection. It is designed to enhance the convenience of flow measurement. It features high measurement accuracy, a large range ratio, no pressure loss, no moving parts, and is compact and lightweight.

When installing ultrasonic flowmeters, the requirements for the straight pipe section are very crucial. This is mainly because the straight pipe section can ensure that the fluid flow state through the flowmeter is stable and uniform, thereby improving the measurement accuracy. The following is a detailed analysis of the requirements for the straight pipe section of ultrasonic flowmeters:

1, ultrasonic flowmeter probe used for a period of time, there will be irregular alarm. Especially when there are more impurities in the conveying medium, this problem will be more common.
Solution: Clean the probe regularly (cleaning once a year is recommended).

External clamp-on ultrasonic flowmeters are now widely used in many fields, such as waterworks, seawater, sewage treatment plants, diesel plants, chemical plants, and so on. However, for the values measured by this instrument to be accurate, the basic condition is correct installation. So, what are the requirements for the installation of external clamp-on ultrasonic flowmeters?

Advantages of ultrasonic flow meter

Common faults and solutions encountered in the use of ultrasonic flowmeters for sewage

Ultrasonic flowmeter has the advantages of easy installation and maintenance and low price. So in the large pipe measurement has an unusual position, but today’s flow meter manufacturer Aister instrument Xiaobian will say that the ultrasonic flow meter is not a separate product, according to different installation methods, there are several categories. In this paper, the selection points of each different ultrasonic flowmeter are introduced in detail.

The maintenance of the probe of ultrasonic flowmeters is a key link to ensure the accurate measurement and long-term stable operation of the flowmeters. The following are some specific maintenance methods and precautions:

Today, we mainly talk about several common fault situations of ultrasonic flowmeters and the corresponding solutions.

Ultrasonic flowmeter is cost-effective, easy to install and maintain. Today, flowmeter manufacturer Aister meter makes the following guidance for you on the installation of ultrasonic flowmeter.

1. Reflection issue

If the object being detected is always at the appropriate Angle, the ultrasonic sensor will obtain the correct Angle. But unfortunately, in practical use, few detected objects can be detected correctly.

Several types of errors may occur among them:

What are the common failures caused by improper installation of ultrasonic flowmeter? Today, flowmeter manufacturer Aister meter collected the fault performance and treatment methods, and it can be collected if necessary.

Measuring range ±0.03 ft/s ~ ±40 ft/s (±0.01 m/s~ ±12 m/s)
Accuracy ±1%
Diameter range 1″~48″(25mm~1200mm)
Measuring medium Single conducting liquid medium
Measurable pipe Carbon steel, stainless steel, PVC pipe or other dense sound conductive pipe
Output Analog output: 4~20mA, maximum load 750Ω, Modbus: RS485
SD card storage 16G
Set the storage interval 1 ~ 99999 s
Keyboard Digital film keying
Display screen  240*128 LCD display (with backlight)
Power source Rechargeable lithium battery with 3000mAh battery capacity. Under normal use, a full charge can be used for 16 hours.
Operating temperature Transmitter: -40℃~ 60 ℃, sensor: -40℃~80℃, standard type; The range from -40 ° C to 130 ° C is optional
Measure the ambient relative humidity 0-99%
Protection class Transmitter IP65, sensor IP68
Cable Twisted pair shielded cable, standard length of 5 meters

Pipe Size: DN25-DN1200mm (1”~48”)
Fluid: Single medium liquid
Temperature: -40℃~80℃ (standard), -40℃~130℃ (optional)
Accuracy: ±1% of measured value
Flow Range: ±0.01 m/s~ ±12 m/s

After having a corresponding understanding of the working principle and application of the ultrasonic flowmeter, what we now need to understand is that in its application of a variety of occasions and various fields to measure user flow, and after the application, we will have to do maintenance for it?

Correction methods for ultrasonic flowmeters are essential to ensure accurate and reliable measurements. Here are some specific correction methods commonly used in practice:

The pharmaceutical and chemical industries also benefit significantly from ultrasonic flow meters. In these sectors, where precise measurement of liquid chemicals is crucial for manufacturing processes, ultrasonic flow meters offer a reliable and contamination-free solution. Their non-invasive nature is particularly advantageous when dealing with sensitive or hazardous substances, ensuring the integrity of the product while maintaining operational efficiency.

The reasonable selection of ultrasonic flowmeter model can ensure the more effective application of ultrasonic flowmeter. The choice of which type of ultrasonic flowmeter should be based on the physical and chemical properties of the measured medium to choose, so that the nominal diameter of the ultrasonic flowmeter, flow range, lining material, electrode material and output current can adapt to the nature of the measured medium and flow measurement requirements.