Influence of ambient temperature on infrared thermometers
When using infrared thermometry to measure the temperature of an object, we inevitably have to consider external factors. The obvious one is the environment. In the environmental conditions of this piece has some of its own new technology. Down to talk about the environmental conditions of some of the impact of the pyrometer.
Infrared temperature measurement of the environmental conditions of the measurement results have a great impact, should be considered, and appropriate solutions, otherwise it will affect the accuracy of temperature measurement and even cause damage to the pyrometer.
First, the ambient temperature on the performance of infrared thermometer effects
Ambient temperature is divided into two cases: one is the measured target environment, the second is the ambient temperature of the infrared thermometer residence. If the measured target background temperature is higher than the measured target or with the measured target temperature near, will have an impact on the measurement results. And when the ambient temperature of the infrared thermometer residence beyond the range of the thermometer can withstand, will also have an impact on the temperature measurement results.
Second, the impact of humid environment on the performance of infrared thermometer
Humid environments can cause internal short circuit pyrometer, which in turn affects the measurement results.
Third, the thermometer temperature measurement site factors:
(1). Measurement angle, whether it is within the allowable range;
(2). Whether the correct aiming
(3). Whether the selected spectral range (wavelength) is appropriate, for the measurement of targets in containers with glass windows, the spectral range can not be selected from 8 to 14 μm, but should be selected near 1 μm;
Fourth, the target in the bright light background to be measured:
If the measured target has a relatively bright background light (such as sunlight or strong lamps directly), the accuracy of the measurement will also be affected, so objects can be used to block the target of direct light to eliminate the background light interference to produce the impact of the measurement results.
In order to reduce the environment and background radiation on the temperature measurement results, the following measures should be taken:
First, as far as possible, choose to use indoors or outdoors in a cool place, indoor equipment can be used to turn off direct lighting equipment, as well as to avoid other radiation effects.
Second, for highly reflective equipment surfaces, can be used to change the detection angle, to find a good angle to avoid the reflection of the detection.
Third, in order to reduce the radiation impact of solar radiation and the surrounding high temperature background, can be used in the detection of shielding measures.
