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Summary: When using an infrared thermometer, if there are data fluctuations, this is mainly caused by the following reasons. There are several reasons for the fluctuation of the data of the infrared thermometer.
Release time:
2021/01/05
Useinfrared thermometerIf there is data fluctuation, this is mainly caused by the following reasons.
There are several reasons for the fluctuation of infrared thermometer data:
First of all, when this happens, it is necessary to check whether the cable insulation is damaged and whether it is in regular contact with the shell of the machine to cause a short circuit to ground.
Secondly, the alignment of the linear infrared thermometer needs to be very good, but the parallelism can have±0.5mmerror, the angle can have ±12degree of error. However, if the parallelism error and the angle error are too large, the display number will jump. When this happens, the parallelism and angle must be adjusted.
Third, the wiring of the infrared thermometer cannot be connected incorrectly, and the power line and the output line cannot be interchanged. If the line connection is incorrect, there will be a large linear error, which is difficult to control, the control accuracy will be poor, and the display screen is easy to jump and so on.
In addition,FMInterference and electrostatic interference may cause the digital display of the linear infrared thermometer to jump. Therefore, the signal line of the electronic ruler must be separated from the strong current line of the device. Electronic ruler must be forced to ground. The signal line needs to use a shielded wire, and a part of the electrical box should be grounded to the shielded wire. If there is high-frequency interference, the voltage measurement usually performed with a multimeter will show normal, but the displayed number will be pulsating. When electrostatic interference is present, the situation is the same as high frequency interference. To prove whether it is electrostatic interference, just use the power cord to short-circuit the cover screw of the electronic ruler with some metal on the machine. As long as the short circuit is connected, the electrostatic interference will be eliminated immediately. However, if you want to eliminate high-frequency interference, it is difficult to use the above method. You can try to pause the high-frequency interference source to see if the display effect is better, so as to determine whether it is a high-frequency interference problem.
It is very helpful for us to understand the reasons for the fluctuation of infrared thermometer data. We usually encounter this situation, we don't know the reason. On the contrary, we can take corresponding measures to deal with it in order to make better use of the infrared thermometer.
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