The hardware of the platinum resistance and temperature measurement system mainly includes platinum resistance sensors, segmentation modules, communication modules, and display terminals. Under normal circumstances, all platinum resistance temperature sensor equipment at the automatic meteorological station introduces a common ground wire to avoid lightning or electromagnetic electromagnetic interference. During the on -site inspection process of platinum resistance temperature sensors, connecting the common ground line of the dry furnace with the automatic weather station can effectively avoid interference introduced by dry furnaces. When dealing with several such electromagnetic interference faults that appeared in our city, they found that a certain module in a platinum resistance and temperature measurement system was incorrect or other reasons caused the ground line. This type of electromagnetic interference failure is excluded. Therefore, correct grounding can effectively avoid the effects of electromagnetic interference.
 

The best way to prevent electromagnetic interference from electromagnetic interference is to do a good job of electromagnetic shielding, so that the platinum resistor temperature sensor and the source of interference can be shielded and isolated. During the on -site inspection process, due to the complex situation and restrictions on the conditions, the electromagnetic interference was sometimes unable to achieve effectively shielding, resulting in inaccurate or not the verification process of the verification data. If the verification method is changed and the on -site verification is changed to the laboratory inspection, the unnecessary electromagnetic interference introduced during the on -site test can be effectively avoided. At the same time, some preventive measures are taken. For example , And using the height temperature tank with better shielding performance, or connecting the shielding line of the platinum resistance sensor with the ground wire of the constant temperature tank, can effectively eliminate the effects of electromagnetic interference.