How to choose Ethernet POE power supply temperature and humidity sensor
There are many types of Ethernet temperature and humidity sensors on the market today. They are mixed and miscellaneous. It seems that Ethernet interface temperature and humidity sensors are Ethernet temperature and humidity sensors. Just looking at the technical parameters of the publicity page, they all seem to be similar, giving engineers choices. Confused, what kind of sensor should you choose? ? The author summarizes the following points according to the actual test, on-site understanding and other aspects to select for the reference of all engineers:
1, professional, to see whether a company is professional, depends on the company's position in the industry and whether the equipment is advanced, technical areas have made some achievements, the company's establishment time is also an inspection standard, after all, the establishment of a long time, experience and Technically mature.
Humidity measurement is not simply a technical issue. As a composite technology for electronics and physical chemistry, the experience is very important. The ignorant is fearless. Not all electronic engineers understand this, especially the design of the production process. Making a product is not the same as producing a product.
Therefore, unlike the cottage collection, it is more secure to choose a professional and professional company. After all, these sensors are not used for our own use but for our customers. Quality assurance is very important.
2. Equipment, temperature and humidity sensors are required by the accuracy. It is very important whether there is calibration equipment related to the factory before the calibration. It is not the accuracy of the device or the accuracy of the finished product. A high-precision humidity environment is expensive, and it is calibrated every year with national standards and calibration certificates are obtained. These must be clearly observed with the manufacturers. 3% product accuracy, at least 1% of the equipment can be guaranteed.
3, batch, product production volume is very important, the product does not have batch, then the reliability of the device is not guaranteed, we must know that IC manufacturers usually do not accept small quantities of orders, but the old electronic IC market cheap, refurbished IC is the mainstream . This is also the reason why the quality of some small factories is unstable.
A simple way to determine the volume of a product is to look at the general housing used by the product's housing or the housing that specifically opens the mold. Usually only the mass produced product will open the mold.
4, security, network areas, are everywhere threatened. Data security issues are very important. Currently, in the Ethernet interface part, most manufacturers choose integrated protocol products. However, these integrated modules are usually used in commercial applications. Factory settings are made in the most convenient way. Security is not enough, and it is easily modified and attacked by the network. The author has had this kind of product, used in the public network, after 2~3 months, the network parameter has been revised and learned. Therefore, professional manufacturers will generally re-process this, re-writing the underlying program to enhance its security.
5, shape design, usually I like to choose products that meet the standards, the size of the product is very easy to install. Pluggable terminals or connectors are important, otherwise wiring for future construction and maintenance can be a pain. These details reflect the manufacturers' intentions for the product. As for aesthetics, it's a matter of opinion. I prefer small products.
6. Function, true Ethernet temperature and humidity sensor, should support POE power supply, support multiple network protocols such as TCP/UDP/SNMP, and be compatible with any third-party network management and maintenance software.
Zhongshan Sitom Electric Co.,Ltd , https://www.chinasitom.com
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