For electromagnetic flowmeters, most of the well-known brands are international brands, such as ABB, Siemens, Cologne, E H, etc. It is generally recognized that ABB and Cologne are the best in the electromagnetic field.
As for domestic brands, the differences from a technical perspective are small, because many companies also use Shenyang Lanshen’s converters (signal processing electronic meter part), and a large number of companies only produce The transducer (signal acquisition part), this makes the signal processing aspect of many companies basically the same, so the technical differences are very small, and to judge its advantages and disadvantages, it must be determined through the production process and inspection of the manufacturer.
The pursuit of profits is the foundation for the survival of an enterprise. Generally, small businesses have no business support, so they are unable to use advanced processing equipment and high-quality raw materials, so they cut back on processes and materials, which leads to excessive product quality. Difference. In addition, everyone knows that flow meters are instruments, and instruments must be calibrated. The quality of the calibration directly affects the error and accuracy of its measurement. Many domestic small factories or small workshops only assemble and produce flow meters, but do not conduct real-flow calibration, or have too few sampling points or simplify the process. Although this saves a lot of costs, it ultimately affects the Product performance, everyone needs to be careful when choosing.
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Tianshi flowmeter calibration device
Let’s talk about the domestic Lanshen converter, the early Lanshen converter The performance is quite satisfactory and the performance is relatively stable. However, due to the decrease in the overall price of flow meters in the domestic market, manufacturers have significantly reduced the purchase cost of converters. In order to gain market share, Lanshen was forced to reduce the production cost of its flow converters. Due to these changes, This directly caused the quality and stability of Lanshen's products to plummet. As a result, many downstream manufacturers' flowmeter products had many quality problems compared with previous products.
To sum up, when you purchase electromagnetic flowmeters, I will give you several evaluation methods for choosing flowmeter manufacturers:
1. Enterprise scale
(1) You can go to the National Enterprise Credit Information Publicity System to check the company's registered capital, registration time and business scope, as well as some production licenses, which can also be found here. It is recommended not to choose a factory that does not have automated instrumentation in its business scope, or a new factory that has just been registered. There are too many uncontrollable factors.
(2) You can go to the tax bureau website to check the tax grade, grade A is the best
2. The credit of the company
(1) Credit China website, you can Check whether the company has any breach of trust cases
(2) China Enforcement Judgment Documents Network, you can check the company's past legal disputes
3. The company's research and development capabilities
(1) Product patents can be checked on the website of the State Intellectual Property Office. Utility model and invention patents are relatively valuable. The greater the number, the stronger the research and development capabilities. As for appearance patents, they do not have much value
(2) Software copyright, this can be checked through the official account of the National Copyright Administration website.
Here, if you are interested in electromagnetic flowmeters, you can also consider TSD electromagnetic flowmeters, which have independently developed converters with national invention patents. Each flowmeter has passed the actual flow test. Calibration.