How to install the humidification system and the matters needing attention in the programmable high and low temperature damp heat test chamber
Many customers should know what the high and low temperature damp heat test box is, but some customers do not know how to install it, how to prevent it from happening, etc., we will answer all the questions from our Haotian Xiaobian.
In a simulated climatic environment test apparatus, programmable high and low temperature heat chamber are widely used in electronic, electrical, automotive components, metal products in heat resistance, cold resistance, resistance to detect the dry mass, humidity, etc. In research and development. In its main system consisting of humidification, heating, refrigeration, control , etc., the main principle of humidification is to change the water into hot water to control the humidity in the test chamber. Therefore , the installation of the programmable high and low temperature damp heat test chamber humidification system is actually the installation of its humidifying water.
The installation method is as follows:
1. First, inject the recovery water tank into pure water or distilled water (do not use tap water, etc., in order to avoid blockage caused by use, the test machine can not operate normally), and add to about nine minutes;
2. Check if the maintenance valve is related (closed to the vertical direction of the water pipe);
3. After the power supply is properly configured for power transmission for about 3 minutes, please pay attention to the water level of the water supply tank and the water level controller. The water level must be maintained at least half of the water level at any time (the water level is seen at the lower observation port in front of the machine);
4. Replenishing humidification water. When the water level is insufficient, inject pure water or distilled water into the water tank and use a small water pump to pump to the water supply tank for water supply in the automatic water circulation system.
There are two types of issues that we should pay attention to in our attention: First, what you need to pay attention to when doing the experiment, that is,
Things to note when doing an experiment:
1. The high and low temperature damp heat test chamber should not open the door unless it is absolutely necessary during the test, otherwise the following adverse consequences may result.
1. The inside of the door is still hot (causing burns).
2. High temperature air may trigger a fire alarm and cause malfunction.
3. The high temperature airflow is flushed out of the box (very dangerous).
Second, before doing low temperature, the studio should be dried and dried at 60 ° C for 1 h.
3. It is absolutely forbidden to test explosive, flammable and highly corrosive substances.
4. If the hot test sample is placed in the box, please use the external power supply for the power supply control of the test product. Do not use the power supply directly. When placing high temperature samples for low temperature test, be careful: the time to open the door should be as short as possible.
5. Circuit breakers and over-temperature protectors provide the test products of the machine and the safety protection of the operators, so please check them regularly.
6. Avoid turning the refrigeration unit off and on within three minutes.
7. The lighting should be turned off except when necessary.
8. Please note that this unit must be safely grounded to avoid static induction.
9. In any section perpendicular to the dominant wind direction, the sum of the cross-sectional areas of the test loads shall not be greater than one third of the working section at that location.
10. When doing high temperature test, when the temperature exceeds 55 °C, it is forbidden to turn on the cold machine.
Operational precautions
1. The high and low temperature damp heat test chamber is in operation, unless it is absolutely necessary, please do not open the door, otherwise it may lead to the following adverse consequences.
High temperature airflow out of the box
Very dangerous
The inside of the door still maintains high temperature
Causing burns
High temperature air may trigger a fire alarm
Malfunction
Second, avoid turning the refrigeration unit off and on within three minutes.
Third, please note that the high and low temperature damp heat test chamber must be safely grounded to avoid static induction.
Fourth, circuit breakers, over-temperature protectors, provide the test products of this machine and the operator's safety protection, so please check regularly.
5. If the hot test sample is placed in the box, please use the external power supply for the sample power control. Do not use the high and low temperature damp heat test box power supply directly. When placing a high temperature sample for low temperature test, it should be noted that the time to open the door should be as short as possible.
6. It is absolutely forbidden to put explosive, flammable and highly corrosive substances into the box for testing.
7. The lighting should be turned off except when necessary.
8. In any section perpendicular to the dominant wind direction, the sum of the cross-sectional areas of the test loads shall not be greater than one third of the working section at that location.
Nine, when doing high temperature test, when the temperature exceeds 55 °C, it is forbidden to open the cold machine.
10. Before the low temperature is done, the studio should be dried and dried at 60 ° C for 1 hour.
11. Confirm whether the water storage capacity is sufficient;
12. Confirm that the water tank cover is covered;
13. Confirm whether the water in the water tank is clean and free of debris;
14. Confirm whether the humidified gauze is not hardened or yellowed;
15. Check the water level after 3 to 5 minutes after the water supply of the humidification tank. The water in the barrel should cover the humidification tube about 1 cm;
16. Whether the water in the humidification tank is clean (the water in the humidification tank should be drained regularly to keep the inside of the tank clean);
17. Confirmation of the drain pipe (whether the drain pipe is connected and the drain valve is closed)
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