By comparing test data, we can analyze the advantages and disadvantages of load curve instruments. A deep understanding of the differences between key load curve meters is essential, especially when there are so many high-quality switch load curve meters available on the market. Prices can vary by several thousand or even tens of thousands of dollars, which often leaves customers confused. In this article, I will explain how to evaluate the quality of a key switch load curve meter.
First and foremost, choosing the right manufacturer is crucial. While I have previously discussed the difference between manufacturers and distributors in my articles, I won’t go into detail here. However, it’s important for customers to verify whether the supplier is associated with a well-known brand. It’s recommended that buyers communicate directly with suppliers and, if possible, conduct on-site inspections. Additionally, request to see relevant certificates such as patent documents—because patent certifications indicate that the manufacturer has independent R&D capabilities.
Another critical factor is checking the test machine prototype. Pay attention to the type of data acquisition cable used: multi-pin cables offer higher sampling rates, ensuring more accurate testing and better protection for the sensors. Also, check if the sensor has foolproof protection and whether calibration requires a password, as this reflects the machine's security and reliability.
The technical performance of the machine is another key aspect. For industry professionals, the quality of the testing equipment can be clearly identified through its specifications. The performance of a test machine may not be obvious when testing standard products, just like how a good car and a poor one may seem similar on a flat road. However, the real difference becomes evident when facing uneven terrain.
For button switches, the most important parameter is the "hand value," which is calculated from the peak and valley values of the waveform. Some switches, potentiometers, and micro-switches may have fewer valley points, resulting in sharp peaks. Different machines may show a slight variation in hand value—sometimes just a few percentage points. But a high-sampling-rate tester can capture smaller valley data, leading to a higher hand value based on the formula (peak minus valley divided by peak).
In the image below, you can see the same product tested under identical conditions, yet the measured hand value differs by 3%. This is because some testers have lower sampling rates, causing the valley points to appear higher and the hand value to be smaller.
Domestic millimeter instruments have proven their quality by being compared to Japanese machines and successfully exported to South Korea, Japan, and even Europe and America. Therefore, it’s highly recommended that customers pay close attention when purchasing and thoroughly understand the intrinsic performance and quality of the testing equipment.
Editor: Hardware Business Network Information Center
http://news.chinawj.com.cn
Electromagnetic Flow Meters,Electromagnetic Flow Meter,Electromagnetic Water Flow Meter,Intelligent Flow Meter
Jingsu Huaerwei Science and Technology Group Co.,Ltd , https://www.hewflowmeter.com