Platinum rhodium thermocouple measuring temperature will be the cause of the temperature fluctuation release date: 2019 - 06 - 11 reading times: zero

Thermocouple is one of the most commonly used temperature detecting element in industry. When using platinum rhodium thermocouple temperature measurement is easy to appear big fluctuations, so, what was the reason for the appear this kind of circumstance? How should we solve this problem? The answer for you. Platinum rhodium thermocouple temperature measurement in an oven, computer shows the shake, the power curve moved too big, this is how to return a responsibility? What is the problem? PLC is a problem or a thermocouple itself appeared to be the problem? Or is the stove in the thermal field problems happened? In fact, the general ordinary shake fundamental are triggered by trouble, platinum, rhodium thermocouple is due to the millivolt level signal, so will be more easily. To solve this problem, we first need to check the shielded wire if you have any questions, shielding compensation conductor can have a large electric field around? Such as power line; Then test the shielding grounding, shielding should be grounded at one end, if on both ends of the ground will also introduce the trouble, so with PLC and platinum-rhodium thermocouple itself should not too big relations. Above is for platinum rhodium thermocouple temperature measurement why there will be a big wave is introduced.