Matters needing attention in the use of ultrasonic heat meters

Abstract: The information on the precautions for the use of ultrasonic heat meters is provided by excellent flowmeter and flowmeter manufacturers. Several problems that are easily overlooked in the use of ultrasonic heat meters 1. The ultrasonic flowmeter is not properly calibrated or calibrated 1. Any flowmeter needs to be calibrated or calibrated before it is used. Portable ultrasonic flowmeters are particularly important in this regard. Everyone. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details of the precautions in the use of ultrasonic heat meters. Several problems that are easily overlooked in the use of ultrasonic heat meters 1. The ultrasonic flowmeter is not properly calibrated or calibrated 1. Any flowmeter needs to be calibrated or calibrated before it is used. Portable ultrasonic flowmeters are particularly important in this regard. As we all know, the portable ultrasonic flowmeter has three sets of probes to choose from (large, medium and small), which are suitable for different pipe diameter ranges. The combination of each set of probes and the host is a set of independent flowmeters in a sense. . 2. If you only use a small probe to verify or calibrate the portable ultrasonic flowmeter on a flow standard device with a small diameter, then if you use a large probe to measure the flow of a large pipeline, it means that you are using an unverified product. Or calibrated flowmeters are measuring flow, and its measurement accuracy cannot be guaranteed, because the current technical level cannot guarantee the interchangeability of probes, not to mention the difference between large and small probes is a variable that cannot be ignored. 3. Therefore, the correct method should be: based on the user's own usage as a reference, as far as possible, the portable ultrasonic flowmeter should be verified or calibrated for multiple pipelines on a flow standard device with the same or close diameter as the pipeline used. At least ensure that each set of probes configured with the flowmeter is calibrated. 4. The purpose of recording the experimental caliber and probe number on the certificate when the verification or calibration institution issues the verification or calibration certificate is to prevent misunderstandings. Those who equate portable ultrasonic flowmeters with other fixed-caliber flowmeters are wrong. , which is also one of the reasons why some users are not good at using portable ultrasonic flowmeters. 2. Neglecting the requirements for the use conditions and environment of the flowmeter 1. Any velocity flowmeter has certain requirements for the flow field of the fluid in the measured pipeline, and the ultrasonic flowmeter is no exception. When the installation position of the flowmeter cannot guarantee the length of the straight pipe section before and after it, the measurement error caused by the unstable flow field cannot be ignored. Many users are limited by the measuring well of the instrument and measure at the position that cannot meet the installation requirements, which causes the increase of the measurement error. 2. The time difference ultrasonic flowmeter is particularly sensitive to the bubbles mixed in the water. The bubbles flowing along with it will cause the unstable value of the flowmeter. If the accumulated gas coincides with the installation position of the probe, the flowmeter will not work. Therefore, the installation of the ultrasonic flowmeter should try to avoid the pump outlet, the high point of the pipeline and other places that are easily affected by gas, and the installation point of the probe should also try to avoid the upper and bottom of the pipeline.°Installation within the range of the angle, but also pay attention to avoid pipeline defects such as welds. 3. The installation and use environment of the ultrasonic flowmeter should pay attention to avoid strong electromagnetic interference and vibration. During use, we found that the use of mobile phones or walkie-talkies near the host will have a more or less impact on the measurement. . 3. Inaccurate measurement caused by inaccurate measurement of pipeline parameters 1. The probe is installed outside the pipeline. It directly measures the flow rate of the fluid in the pipeline. The flow rate is the product of the flow rate and the flow area of ​​the pipeline, and the pipe area and channel length are It is calculated by the user from the pipeline parameters manually input by the host, and the accuracy of these parameters directly affects the measurement results. That is: even if the flow meter measures the flow rate accurately, if you enter an inaccurate set of pipe parameters, the measurement will be inaccurate. 2. The acquisition of pipeline parameters is based on actual measurement. Errors may occur in the way of checking design drawings and inquiring people familiar with the situation, because the actual construction situation often differs from the design parameters, and the manufacturing deviation of pipelines is sometimes It is also not negligible, and parameters such as the wall thickness of the pipe used for a period of time will also change a lot with time. 3. The rationality of the methods and methods should also be paid attention to in actual measurement of pipeline parameters, and the measuring tools and instruments used for measurement should be calibrated. When measuring the outer diameter of the pipe, pay attention to the possible influence of the outer protective layer of the pipe and the rust and dirt on the outer layer on the measurement. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Precautions for the use of ultrasonic heat meters'
Beijing Sincerity Automatic Equipment Co., Ltd have long believed that management practices are an important element in productivity.
The expert engineers of Beijing Sincerity Automatic Equipment Co., Ltd always develop with utmost precision so that all quality standards are met during the production. we are looking forward to becoming a trusted supplier of customers. visit us at Sincerity Flow Meter.
With this competency, Beijing Sincerity Automatic Equipment Co., Ltd provide high technology and assist customers to create added value and contribute to the development of producing mass flow meter.
First, in sparking the initial idea for a company based on manufacturing technology; and second, in designing a solution that could meet a clear market need for solving issues related to mass flow meter low flow turbine flow meter.
Our company specializes in selling mass flow meter as well as providing relevant services.