Thermal resistance and thermocouple, which fast response to temperature changes?

Actually affect 'response time' is the main reason of the resistance ( Temporarily to Pt100) , thermocouple ( Insulated type) Depends on the features of itself!

say first principle: heat resistance is the temperature change into resistance changes directly to the instrument display would eventually we can read the temperature, although need power supply, but energy consumption is very small!

we say again, the advantages and disadvantages of thermal resistance, heat resistance is the most widely used heat resistance materials is platinum and copper, etc. ( In recent years, the resistance of the material also has a lot of try) A biggest drawback, the copper is

'more than 150 degrees is susceptible to oxidation' that determines its temperature range! And the platinum resistance of high precision, good stability, good linear, so I decided to in the environment of small temperature difference temperature calibration! But also have a headache problem, that is, the higher the temperature the smaller resistance change rate, the smaller the mean? Accuracy is more and more low, finally to measuring temperature. Also limits the temperature measurement range.

we say again thermocouple ( The thermocouple insulation shall prevail) , first say A principle:

the thermocouple are two different material A conductor or semi-conductor A and B welding together, form A closed loop. When the conductor A and B two persistent point temperature difference between 1 and 2, occurs between the electromotive force, thus forming the size of A current in the circuit, this kind of phenomenon called the thermoelectric effect. Thermocouple is in using this effect to work!

high plus thermocouple temperature measurement range is larger, so the response time of the thermocouple to heat resistance is fast, ( Hull thermocouple faster response time, at the expense of the precision. ）

the final conclusion: ( Put aside all external interference) Thermocouple heat resistance response time must be quick!