Features

For Noble Metal Thermocouple,the thermocouple with highest measurement accuracy of all, and be treated as standard thermocouple. Including S,R and B types, almost be assembly structure. The highest accuracy is ±1℃,and highest using temperature is 1700℃ (B).The thermocouple is mainly applied for oxide environment, and using occasions mainly be high temperature kilns.

Product Name	Type B thermocouple
Thermoelement	Ptrh30-Ptrh6
Grade	II class ±1.5C or 0.25%t
Connection	Water-proof head
Length	Specify Total length and Immersion length
Diameter	Specify OD
Tube	99% Al2O3
Temperature	600~1700℃

About protection tube material

For oxide environment temperature above 900℃,always use 2520(310S),when higher than 1000℃,always consider GH3039,Inconel600 and 99% Al2O3 protection tube. When temperature up to 1300℃,just 99% Al2O3 tube have to be considered.

About Process connection

For non-sealing environment, the thermocouple can be without thread or flange. For sealing environment, have to with thread or flange. The process connection is depended on your device.

Type B Thermocouple Conductor Combinations And Characteristics

Type	Thermoelement	Temperature range ℃	Function Features
			Advantages	Disadvantages
S	Ptrh10-Pt	0~1600	Suitable for oxidation atmosphere. High precision, stability is not affected by using time.With oxidation resistance, chemical corrosion resistance, can be used as standard thermocouple.	Not suitable for reducing atmosphere (especially H2, metal vapor) and vacuum environment, high cost.
R	Ptrh13-Pt	0~1600
B	Ptrh30-Ptrh6	600~1700	Suitable for more than 1000℃,with small thermoelectric, oxidation resistance and chemical corrosion resistance	Can't be used below 600℃, low sensitivity.

Type B Thermocouple Limit Of Error

	Thermoelement	Type	Limits Of Error(±℃)/Effective Temperature Range(℃)
			1 class	2 class	3 class
Nobel Metal TC	Ptrh10-Pt	S	1.0/600~1100 1+0.003(t-1100)/1100~1600	1.5 or 0.25%t/0~1600	--
	Ptrh13-Pt	R
	Ptrh30-Ptrh6	B	--	1.5 or 0.25%t/600~1700	4.0 or 0.5%t/600~1700