Confusion: What is the difference between constant temperature and humidity Test Chamber, high-low Temperature Test Chamber, thermal shock Test Chamber and rapid temperature change chamber?

Environmental testing equipment is very common in the industrial field. It is used to test the adaptability of products such as high-low temperature resistance and humidity resistance. Common testing machines include constant temperature and humidity Test Chambers, high-low Temperature Test Chambers, and thermal shock Test Chambers. And rapid temperature change Test Chamber. As for these four environmental Test Chambers, what is the difference between them? This is a point of confusion for many technical and purchasing personnel when selecting models. Today, the editor will elaborate on the differences between the four test equipment.

The overall difference between the four

First, briefly summarize the differences between constant temperature and humidity Test Chambers, high-low Temperature Test Chambers, thermal shock Test Chambers and rapid temperature change chambers:

• Rapid temperature change Test Chamber - means that the temperature rise and fall speed is higher than that of ordinary constant temperature and Humidity Chamber;

• Ordinary constant temperature and Humidity Chambers rise 3 degrees in one minute and drop 1 degree in one minute;

• Constant temperature and Humidity Chamber, without adding humidity is a high-low Temperature Test Chamber;

• The thermal shock Test Chamber refers to switching between different temperature environments within 3-5 minutes.

The difference between high-low Temperature Test Chamber and thermal shock Test Chamber

However, both the high-low Temperature Test Chamber and the thermal shock Test Chamber have high temperature and low temperature functions, and they are both used for high-low temperature environmental tests. What are the specific differences between them? Please read below:

The high-low Temperature Test Chamber is to test the change of the product in the process of heating and cooling or constant temperature, while the thermal shock Test Chamber does not have this slow temperature change process, it is to test the ability of the product to be subjected to rapid temperature changes.

The main differences are divided into the following four points:

1. In terms of use:

1. The high-low Temperature Test Chamber mainly tests the adaptability of the product under high temperature and low temperature conditions.

2. The thermal shock Test Chamber mainly tests the adaptability of the product under high temperature and low temperature conditions.

High-low Temperature Test Chambers generally have no specific requirements for the time of temperature conversion. The time for high temperature to low temperature and low temperature to high temperature is generally about 1 hour. The thermal shock Test Chamber generally changes from low temperature to high temperature, and from high temperature to low temperature. It must be completed within 15S and stabilized within 5 minutes. The impact Test Chamber is more stringent in terms of testing.

Second, the structure

1. The high-low temperature test box has only one box, the cooling part is placed at the bottom of the box, the heating part is at the back of the box, and the control circuit is at the top of the box.

2. Cold and heat shock Test Chambers are generally divided into two-Cabinet-type and three-Cabinet-type. As the name suggests, the two-Cabinet-type has two boxes, which are divided into high temperature room and low temperature room. Generally, the low temperature room is on the bottom and the high temperature room is on the top. The one with a mobile basket is also called a two-box basket-type thermal shock Test Chamber; the three-Cabinet-type has three boxes, which are divided into a high temperature room, a low temperature room and a laboratory, and the test products are placed in a fixed laboratory.

The high-low temperature is mainly the refrigeration system and the control system to balance the high temperature and low temperature. The cold and heat shock Test Chamber mainly realizes the sharp change of temperature through the cold storage and heat storage in the low temperature room and the high temperature room.

Three, the price

With the same box size and temperature range, the price of the thermal shock test box is 3-5 times higher than that of ordinary high-low temperature test boxes. The larger the test box, the higher the price.

Fourth, the technical requirements

The high-low Temperature Test Chamber is relatively mature in technology, while the thermal shock Test Chamber has certain technical difficulties in the design of the structure of the chamber and the production of the process.

To put it simply, the thermal shock Test Chamber is a test equipment that drops from high temperature to low temperature in an instant, or from low temperature to high temperature. The low Temperature Test Chamber can only do high temperature and low temperature tests, and its heating and cooling rate is slow, and the temperature change rate has corresponding standards.

After such a detailed comparison, do you understand the differences between constant temperature and humidity Test Chambers, high-low Temperature Test Chambers, thermal shock Test Chambers and rapid temperature change chambers ?

For those who do not understand, please consult technical engineers from the North and South Tide.