How is the temperature change rate of high and low temperature alternating test chamber

NOKI Chamber pm5:40

High and low temperature alternating hot and humid test chamber temperature and cooling rate test procedures: in the test chamber temperature adjustable range, select the low nominal temperature for the low cooling temperature, high nominal temperature for the high heating temperature.

Turn on the cold source, so that the test chamber has room temperature down to low cooling temperature, at least 3H after stabilization, up to high heating temperature, at least 3h after stabilization and then will be to low cooling temperature, heating time and cooling time, recorded every minute until the end of the experimental process, the calculation and evaluation of experimental results.

The measured temperature value according to the test instrument correction value correction, according to GB11158 Article 5.5.4.2 formula to calculate the temperature, high and low temperature alternating hot and humid test chamber change rate should be consistent with the requirements of Article 4.1.7.

High and low temperature alternating heat and humidity test chamber insulation performance testing and evaluation methods.

This test is done during the warming and cooling test, when the test chamber to reach a high test temperature and stable 3h, with a surface thermometer to check the test chamber outer wall, observation window frame, and other easily accessible parts of the temperature, such as not higher than 50 ℃, in low temperature conditions, when the ambient temperature of 30 ~ 35 ℃, relative humidity of 75% to 85%, the outer wall of the box, the box door and sealing should not be obvious condensation phenomenon.

When the high and low temperature alternating hot and humid test chamber to reach a low test temperature and stable 3h, with the naked eye to observe the outer wall of the box, box door sealing condensation, such as no obvious dew or water film of the above condensation phenomenon and other matters.

High and low temperature alternating hot and humid test chamber temperature range and third-party certification

High and low temperature alternating heat and humidity test chamber equipment size: This is based on the size of the customer’s products and the number of placement to consider, of course, the customer use the area of the place and the elevator door, the size of the laboratory door should be well thought out. If it is electronic parts and other small things, choose the size of 45 * 45 * 50cm 100 liters volume is enough if it is a motor and other large products, it is necessary to choose then 800 liters or 1 cubic meter, and then the larger words should provide the size of the manufacturer for you to customize walk-in high and low temperature alternating shriek test box.

Temperature and humidity range: GB/T2423.2-2001 in the national standard humidity range is 30 ~ 98% R.H, but because the products are now pursuing more accurate, there are some customers will mention to 20 ~ 98% R.H, of course, a little more experienced manufacturers this can also be done, but to correspond to a certain temperature point, because, 0 degrees to do humidity that is impossible, because 0 degrees are icing, high temperature 150 degrees to do humidity is also impossible, are drying, this is a common sense, as for the temperature range, high temperature is basically 130 ℃, 150 ℃, low temperature range from 0 ℃, -20 ℃, -40 ℃, -60 ℃, -70 ℃, -80 ℃ or even lower, the lower the temperature the greater the technical difficulty, and consequently the price will be higher, choose the time to choose to have often done since the temperature and humidity Point, rather than the pursuit of low points, because it is not used, but out of such a high price, which is unnecessary.

High and low temperature alternating hot and humid test chamber origin of the accessories: the cost of the equipment lies in the good or bad accessories, the quality of the equipment also lies in the good or bad accessories, so, high and low temperature alternating hot and humid test chamber equipment life and quality assurance and price are dependent on the accessories, now most manufacturers in the pursuit of low cost are using some small domestic factory production of accessories, independent brand high and low temperature alternating hot and humid test chamber led to Equipment after-sales constantly, can not be used normally

High and low temperature alternating heat and humidity test chamber third-party certification: is whether the equipment can pass the local quality inspection bureau or metrology institute of the third-party quality inspection of the equipment if there are manufacturers package ticket equipment can be certified by a third party, then this equipment you can rest assured to buy.

What are the characteristics of the temperature of the high and low temperature alternating hot and humid test chamber?

High and low temperature alternating hot and humid test chamber as the name implies is to maintain the temperature of the equipment, it is understood that the application of the thermostat is mainly planted cultivation and related applications, the characteristics of its control temperature is incomparable to other equipment.

High and low temperature alternating hot and humid test chamber is mainly to put the product in the specified temperature and humidity, to see the product’s high temperature, low temperature, and humidity resistance, thermostat box at the same time with heating, cooling, humidification, humidity reduction capacity.

High and low temperature alternating hot and humid test chamber is used to raise or cultivate biological or biological parts (cells, etc.) of the box-type apparatus. Beijing constant temperature and humidity test chamber used to incubate eggs thermostat, some are heated by hot water (water temperature type), but most of the experimental use of electric heating, thermostats are equipped with internal electric heaters and thermostats, is a box or cabinet equipped with insulation material on the outer wall.

Some thermostats are more advanced, you can set the deviation degree, for example, under normal circumstances, the temperature should be reached when the lower limit to start heating, at this time heating a little later, because, after the start of heating, the temperature may have to drop for some time, then you can set the deviation degree, so that the early heating or cooling.

High and low temperature alternating hot and humid test chamber is widely used, its role is also relatively large, with cooling, heating, humidification, humidity reduction, and other roles.

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