Cleaning infrared thermometer points and precautions for use

1. Some "baffles" should be placed around the infrared thermometer, and even the thin metal plate should be used to cover the thermometer.

This prevents debris from smudging the thermometer and some moving parts, and this "staining" tends to make the movable part uncomfortable and affects the weighing accuracy. Whether the system has motion or not, can be judged by the following method. That is to say, add or subtract about one thousandth of the rated load on the weighing platform to see if the electronic weighbridge display is reflected, and there is a reflection that the movable part is not "stained".

2. All shielded cables shall be used for all wires leading to or from the display circuit.

The connection and grounding point of the shielded wire should be reasonable. If it is not grounded through the mechanical frame, it is grounded externally, but the shielded wires are not grounded after being connected to each other and are floating.

Note: There are 3 thermometers that are fully connected. The thermometer itself is a 4 gauge system, but it is replaced by a 6-wire connection in the junction box. The output signal readout circuit of the thermometer should not be placed in the same box with the device that can generate strong interference, such as “controllable silicon, contactor, etc.” and equipment with considerable heat generation. If this cannot be guaranteed, it should be considered. A baffle is isolated between them, and a fan is placed in the box. The electronic circuit for measuring the output signal of the fiber optic thermometer should be configured with a separate power supply transformer as much as possible, instead of sharing the same main power source with devices such as contactors.

3. Infrared thermometers should be constructed with hinged copper wires (cutting area of ​​about 50mm2) to form electrical bypass to protect them from electric welding current or lightning strikes. In the use of the thermometer, strong heat radiation must be avoided, especially on the one side.

4, electrical connection (such as the signal cable of the thermometer, not in parallel with the strong power line or control line infrared two-color thermometer (for example, do not put the thermometer signal line and strong power line and control line In the same pipe.) If they must be placed in parallel, the distance between them should be kept above 50CM, and the signal wires should be covered with metal pipes.

Everyone knows that there is some pollution on the lens of the infrared thermometer, which will not affect the accuracy of the two-color infrared thermometer, but it has a great influence on the monochrome infrared thermometer. Of course, if the lens is too dirty, the sensor head can not get enough infrared energy, even if it is a two-color infrared thermometer, the measured temperature value will have a large deviation, so in daily maintenance, you should pay attention to keep The lens is cleaned to ensure the normal operation of the thermometer and meet the measurement needs.