If you are using a soldering iron for electrical and electronics work you know it gets very hot in order to melt the soldering wire, we are talking about hundreds of degrees Celsius here. What gets very hot however is the tip of the soldering iron and depending on the kind of soldering wire you are using it can be as low as 200 degrees or go over 400 degrees Celsius. Cheaper soldering irons do not come with temperature control from the user, but if you want something better then you can get a soldering iron that will allow you to control the operating temperature within a specific range depending on the soldering wire and kind of work you will be doing. Here you can see a thermal image of a soldering iron that has its tip already heated to 200 degrees, or actually more than that, though our thermal imaging camera maxes out at 200 degrees Celisus, so it will not show higher temperatures unfortunately. The actual temperature of the soldering iron tip should be more like 300 degrees Celsius if the thermal camera range could cover that you would see it on the thermal image. This is one of the limitations of the consumer oriented and more affordable thermal imaging cameras you can find on the market – more limited temperature range.


Here is a thermal image taken of the indoor unit of a Mitsubishi air conditioner in operation and set to maintain room temperature of 23 degrees Celsius during the winter, something it happens to do very well. As you can see from the thermal image the temperature of the inner components of the air conditioner unit visible from the exhaust for hot air is significantly higher and goes up to about 40 degrees Celsius after a few hours of use when the thermal image was taken. The hot air coming from the AC unit however can vary greatly depending on the preset temperature that the device needs to maintain in the room and the current ambient temperature. So the conditions can greatly vary in each case and when it gets hotter outside we are going to also take a thermal image with the air conditioner unit actually keeping lower indoor temperatures than the outer hot ones.


Do you happen to know how hot is the hot water or how cold is the cold water coming out from a water dispenser that you have at the home or office? Well, the temperatures of the hot and cold water can differ, but often they are either too cold or too hot to normally drink right away, so you might have to mix both to get the right temperature. We took a thermal image of two cups that were just filled with hot and with cold water from a water dispenser and you can see the results yourself. The temperature of the hot water cup on the left is around 80 degrees Celsius while the temperature of the cold water cup on the right is just about 5 degrees Celsius. This makes the hot water at a good temperature to make a tea with it and the cold water temperature for a refreshing drink in the summer for example.