How to choose an electronic moisture-proof box (drying cabinet) has always been one of the concerns of everyone. With the arrival of the rainy season, for the laboratory, especially some experimental samples, the precision instruments are dry and preserved, moisture-proof, mildew-proof, and electronic moisture-proof. Boxes (drying cabinets) are especially important. Electronic moisture-proof box purchase should pay attention to the following points;
1. Comparison of the selection of the humidity control range of the electronic moisture-proof box. At present, the moisture level of the electronic moisture-proof box on the market is generally divided into three levels of 20-50% RH (or 60% RH), 10-20% RH, and 1-10% RH. Of course, some manufacturers also cater to The customer's large-scale control of moisture demand, will also introduce 1-50% RH, or 5% RH models, in fact, in my opinion, the latter two basically have no application value or significance. Let's talk about some humidity levels. Conventional items such as biological agents, medicines, seeds, and powders are basically placed in sealed containers. The humidity range of 20-50% RH can meet the requirements. Some special materials may absorb moisture. Stronger, will require the better the better, then you can choose according to the actual requirements, such as 1-10% RH, mainly based on the storage conditions of the stored items to select. Let's talk about the latter two humidity models, 1-50% RH. It seems that this model can put all the items in storage, but the electronic moisture-proof box can only set one humidity, and at 1-10% RH. The scope is not easy to control, which means that this model is only able to satisfy the storage of a class of products, not all. Let me talk about 5% RH, this %RH is an absolute humidity value, the accuracy of the temperature sensor is plus or minus 3% RH, and in actual use, the model of 5% RH needs to reach the humidity of 2% RH or less to meet 5 The requirements below %RH, because the sensor itself is with errors, in addition, the measurement of 5% RH, for the secondary instrument (humidity tester), there is no way to measure (the measurement bureau will not issue a qualified report, because There is no way to do calibration), which means that an unfounded data or display cannot be applied in the lab.
2. The selection of the cabinet of the electronic moisture-proof box. The cabinet of the electronic moisture-proof box includes stainless steel cabinet and steel plate lacquer. The stainless steel cabinet is basically made of SUS201 or SUS304. It is also divided into mirror stainless steel and brushed stainless steel. As for SUS201 or SUS304, according to the customer's own needs, the laboratory is generally SUS201. It can meet the requirements. Of course, if it is clean or the sample is non-neutral, it is safer to use SUS304. The corrosion resistance of SUS201 is not as good as SUS304. The steel baking varnish is divided into ordinary baking varnish and black anti-static. The so-called black anti-static refers to柒 itself is a permanent anti-static paint. After baking, the cabinet itself can be anti-static. For some electronic products, it is more practical for black anti-static models. As for the size of the cabinet, it is recommended to choose as large as possible, the larger the cabinet, relatively speaking, the equivalent cost of the same type of large-capacity cabinet is more cost-effective.
3. Details of the selection of electronic moisture-proof box. At present, there are more and more manufacturers of electronic moisture-proof boxes on the market. Some details are often not very concerned, such as temperature and humidity sensors, LED display modules, dehumidification host materials, workmanship, humidity control stability, Dehumidification speed, these are actually the main reference for determining the performance of an electronic moisture-proof box. They are often ignored by everyone. If the requirements are not high, some of the above parameters can be ignored, but if the requirements are high, these contents should be understood as much as possible. There is also inspection at the factory, after-sales service, etc.
Regarding the selection of electronic moisture-proof box (drying cabinet), you can refer to the above points carefully. Of course, the demand for buying equipment is different, so the reference point will be different, and the price and performance need to be weighed and evaluated.
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