How to choose a constant temperature and humidity test chamber

Constant temperature and humidity test chamber is a kind of commonly used test equipment, mainly used in testing materials in various environments of heat resistance, cold resistance, dry resistance, wet resistance and other performance parameters, is widely used in electronics, electrical appliances, communications, instruments, vehicles and other fields. So what aspects should we pay attention to in the process of choosing constant temperature and humidity test chamber? Next, Dongguan Huanyi simply introduces the selection method of constant temperature and humidity test chamber, hoping to help you.

Selection method of constant temperature and humidity test chamber:

First of all, choose a suitable test equipment, according to the size of the test sample, to choose the test chamber. When the trial product (component, component, component or whole machine) is placed into the climate environment chamber for testing, in order to ensure that the tested product can meet the environmental conditions specified in the test specification, the working space size of the climate chamber and the outer dimension size of the tested product should follow the following three points: 1. The volume of the tested product shall not exceed the effective working space of the test chamber (20-35), and it is recommended that the product heated in the test should not be greater than 30mm; 2. The ratio between the windward fault area of the tested product and the total area of the working chamber of the test chamber on this section shall not be greater than (35-50); 3. The distance between the outer surface of the tested product and the wall of the test chamber should be kept at least 100-150mm.

In terms of product performance, we also need to choose carefully! The focus needs to consider the following aspects!

1. Temperature range: What is the temperature range of the equipment? At present, there are four standard temperature ranges for customers to choose, A: 0℃~150℃; B: -20℃~150℃; C: -40℃~150℃; D: -70℃ to 150℃. If customers demand non-standard temperature, we can also produce, the low temperature can be up to -90℃.

2, cycle function: whether the equipment has the temperature cycle function, that is, repeated cycle between the temperature switch curve cycle. We call such equipment with circulation function as high and low temperature alternating test chamber.

3. Humidity range: Whether the equipment has humidity function. With humidity range, we call it high and low temperature humid heat test chamber or constant temperature and humidity test chamber. The humidity range is generally controlled in 20% ~ 98% R.H(the temperature is 25℃ ~ 80℃).

4. Selection of system control hardware. In the hardware selection, mainly according to the customer's actual operation, test use and combined with product cost to choose. For example: in refrigeration, the general production of imported French "Taikang" fully closed refrigeration compressor unit, the United States "Danfoss" thermal expansion valve, "Aigao" filter dryer, Italy "Casto" solenoid valve and so on. In terms of control, there are large touch-screen control methods imported from Korea and Japan for you to choose. When making specific plans, our company will send the product configuration list to the customer and make appropriate changes according to the customer's requirements.

Dongguan Huanyi -- Manufacturing expert of Quality testing equipment and test equipment!

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