The arrival of the summer sun in May means that summer has come and the temperature has risen significantly. At this time, thunderstorms increase and humidity is high. Frequent rainfall and humid environment can easily lead to internal condensation of the laser, which will reduce the performance of the laser, or even damage the laser. Condensation: place the object in a certain temperature, humidity and pressure environment, and gradually reduce the object temperature. When the temperature around the object drops below the "dew point temperature" of the environment, the moisture in the air gradually reaches the saturation state until the dew drops settle on the surface of the object.
How to avoid condensation
1. Avoid condensation inside and outside the laser without air conditioner
If the laser without air conditioner is used and exposed to the working environment, once the cooling temperature is lower than the dew point temperature of the internal environment of the laser, water will precipitate into the electrical and optical modules. If no measures are taken, the external surface of the laser will start to condense. Therefore, once the condensation of the laser shell is seen, it means that the internal environment has been dewed. The operation must be stopped immediately and the working environment of the laser must be improved immediately. The solution is: the laser is equipped with an independent air conditioning room.
2. Avoid condensation inside and outside the laser with air conditioner
When the laser is used with its own air conditioner and exposed to the working environment, the cooling and dehumidification effects of the air conditioner will greatly reduce the dew point temperature of the laser environment. Generally, the refrigeration temperature of industrial air conditioners is consistent with that of cooling water.
When the ambient temperature is lower than 38 ℃
The industrial air conditioner can maintain the safety of the laser environment, but the surface of the laser enclosure may be condensed. If the condensation does not form flowing drops, it is safe. If there are a lot of flowing water drops and there are obvious water stains around the laser, a safe and non condensing working environment must be established for the laser with air conditioner.
When the ambient temperature is higher than 38 ℃
The cooling capacity of the industrial air conditioner is not enough to maintain the safety of the internal environment of the laser, and condensation will still occur in the internal environment, and the external environment will also be condensed for a long time. Therefore, there should be no obvious heat source around the laser, and the heat outlet of the water cooler should not face the laser directly.
Whether the laser is equipped with an air conditioning room, please set the cooling water temperature according to the following recommendations
1. The water temperature of purified water (also called low temperature water) should be set at about 21 ℃, which can be adjusted between 20 ℃ and 25 ℃ according to the situation. This adjustment needs to be made or confirmed by professionals.
2. The water temperature of ionized deionized water (also called high-temperature water) should be set at 27~33 ℃, which should be adjusted according to the ambient temperature and humidity. The basic principle is that the water temperature of deionized water should be higher than the ambient dew point.
Since condensation is an objective physical phenomenon, it cannot be avoided 100%. However, we should remind everyone that when using the laser, we must try our best to reduce the temperature difference between the working environment and the laser cooling temperature.