Using platinum rhodium thermocouple are which need special attention?

A, we in the use of platinum-rhodium thermocouple compensation wire, it should be noted that type of match each other, never the wrong polarity, and the compensating conductor and platinum rhodium thermocouple temperature on end connection, can not exceed 100 ℃; Second, if you use the time constant of larger platinum-rhodium thermocouple for measuring temperature, or is carried out on the temperature, while the instrument temperature fluctuations on show are very small, but, in fact furnace temperature on the temperature fluctuation is very big, in order to more accurate temperature measurement, can choose platinum rhodium thermocouple time constant is small; Three, according to meter the correct wiring diagram to electricity connection of platinum-rhodium thermocouple, the instrument will show on the first is the platinum rhodium thermocouple indexing number, and then shows the main scope of the whole instrument range, the measuring instrument of small tube of digital temperature setting, time is displayed on the meter is temperature measurements; Four, platinum rhodium thermocouple is the comparison of the measured medium flow can not be installed in the area of small, using a platinum rhodium thermocouple to measure the tube of containment, installation must ensure that it is the reverse flow direction, and is fully and contact between gas. Five, in order to ensure that platinum rhodium thermocouple and thermal resistance between the measured between the terminal and the interface of the measured medium, can get more sufficient heat, should be reasonable choice of measuring point position, try to avoid in the position of the valve. Six, in accordance with the laws of conductor in the middle of, the use of actual measurements of platinum-rhodium thermocouple, often can use welding, the hot side and cold side different forms such as open, at this time of the cold end is connected between and display of the instrument.