application

Specially designed for the petrochemical sector, it can directly measure the surface temperature of liquids, vapors, gases, and solids within the range of -200 ℃ to 1600 ℃.

working principle

The two electrical levels of a thermocouple are composed of different conductor materials. When there is a temperature difference between the measuring end and the participating end, a thermoelectric potential is generated, and the working instrument displays the temperature value corresponding to the thermoelectric potential.

Product execution standards

Nominal Pressure

Generally refers to the static external pressure that the protective tube can withstand at room temperature without breaking. The allowable working pressure is not only related to the material, diameter, and wall thickness of the protective tube, but also to its structural form, installation method, and the flow rate and type of the measured medium.

Temperature measurement range and allowable deviation

thermocouple

model	graduation mark	Tolerance level
		Ⅰ		Ⅱ
		Allowable deviation	Temperature measurement range ℃	Allowable deviation	Temperature measurement range ℃
WRN	K	±1.5℃	-40~+375	±2.5℃	-40~+333
		±0.004 │t│	375~1000	±0.0075 │t│	333~1200
WRE	E	±1.5℃	-40~+375	±2.5℃	-40~+333
		±0.004 │t│	375~800	±0.0075 │t│	333~900
WRP	S	±1℃	0~+1000	±1.5℃	0~600
		±（1+0.003 (t-1100)）	1000~1600	±0.0025 │t│	600~1600
WRQ	R	±1℃	0~+1100	±1.5℃	0~1100
		±0.004 │t│	1100~1600	±0.0025 │t│	1100~1600
WRR	B	-	-	-	-
		-	-	±0.0025 │t│	600-1700