WR □ K series armored thermocouple - Thermocouple - sensor - Chongqing Instrument Materials Research Institute

■ Standard：JB／T5582－91
Armored thermocouple has a slender body shape, fast heat response, resistance to vibration, long life and easy to bend, etc., widely used in aviation, atomic energy, petroleum, chemical, metallurgical, mechanical, electrical and other industrial sectors and research areas, especially suitable for installation in the pipeline narrow, winding and demands rapid response, micro-oriented place special temperature.
Armored thermocouple is usually sheathed thermocouple components, installation of fixture and the reference side connected devices and other major parts.
■Feature
Temperature range, reaction speed, diameter is small, temperature responsive, easy installation, long service life, good gas tightness, mechanical strength good. There may be vibration, low temperature, high temperature under the conditions of use.
■Main Technical Specifications
Armored Thermocouple recommended temperature limit

Variety	Type	Outside sleeve tube material	Diameter	Recommended temperature
Variety	Type	Outside sleeve tube material	Diameter	Long-term use the maximum temperature	Short-term use the maximum temperature
Armored NiCr-NiSi	WRKK	GH3030	0.25; 0.5;1.0	300 500	600
			1.5;2.0;3.0	800	900
			4.0;4.5;5.0	900	1000
			6.0;8.0	1000	1100
		1Cr18Ni9Ti	0.25 0.5;1.0	300 400	600
			1.5;2.0	600	700
			3.0;4.0;4.5; 5.0;6.0;8.0	800	900
Armored NiCrSi-NiSi	WRKN	GH3030	0.25; 05;1.0	300 500	600
			1.0;2.0;3.0	800	900
			4.0;4.5;5.0	900	1000
			6.0;8.0	1000	1100
		1Cr18Ni9Ti	0.25 0.5;1.0	300 400	600
			1.5;2.0	600	700
			3.0;4.0;4.5 5.0;6.0;8.0	800	900
Armored NiCrSi-CuNi	WRKE	1Cr18Ni9Ti	1.0	400	500
			1.5;2.0	500	600
			3.0;4.0;4.5;5.0	600	700
			6.0;8.0	700	800
Armored Fe-CuNi	WRKJ	1Cr18Ni9Ti	1.0	300	400
			1.5;2.0	400	500
			3.0;4.0;4.5;5.0	500	600
			6.0;8.0	600	750
Armored Cu-CuNi	WRKT	1Cr18Ni9Ti	1.0	200	250
			1.5;2.0;3.0;4.0 4.5;5.0	250	300
			6.0;8.0	300	350
Armored PtRh10-Pt	WRKS	GH3039	2.0	1000	1050
Armored PtRh10-Pt	WRKS	GH3039	3.0;4.0;4.5 5.0;6.0	1100	1200
Armored PtRh13-Pt	WRKR	GH3039 (PtRh6)	2.0	1100
Armored PtRh13-Pt	WRKR	GH3039 (PtRh6)	3.0;4.0;4.5 5.0;6.0	1200	1300
Armored PtRh30-PtRh6	WRKB	PtRh6	2.0	1400	1500
			3.0;4.0;4.5	1500	1600
			5.0;6.0	1600	1700

● Type and tolerance

Variety	Type	Tolerance
Variety	Type	Ⅰ	Ⅱ	Ⅲ
NiCr-NiSi	WRKK	±1.5℃ or ±0.4%1t1	±2.5℃ or ±0.75%1t1	±2.5℃ or ±1.5%1t1
NiCrSi-NiSi	WRKN
NiCr-CuNi	WRKE
Fe-CuNi	WRKJ			-----
Cu-CuNi	WRKT	±0.5℃ or ±0.4%1t1	±1℃ or ±0.75%1t1	±1℃ or ±1.5%1t1
PtRh10-Pt	WRKS	±3℃or±0.5% 1t1
PtRh13-Pt	WRKR	±3℃or±0.5% 1t1
PtRh30-RtRh6	WRKB	±4℃or±0.5% 1t1

Variety	Type	Tolerance
		Ⅰ		Ⅱ		P
		Temperature range	0~1100℃	0~600℃	600~1100℃	0~600℃		600~1100℃
PtRh10-Pt	WRKS	±1℃		±1.5℃	±0.25％t		±3.0℃	±0.5%t
PtRh13-Pt	WRKR
PtRh30-PtRh6	WRKB	±4℃ or ±0.5% t

● Armored thermocouple response time τ0.5

outer diameter (mm) response time (s) working side form	0.25	1.0	1.5	2.0	3.0	4.0	5.0	6.0	8.0
Outcrop type	0.01	0.01	0.02	0.03	0.05	0.07	0.08	0.10	0.12
Shorted junction type	0.05	0.1	0.2	0.3	0.5	1	2	2.5	5
Insulation type	0.1	0.2	0.3	0.5	1.5	3	5	8	10

● Armored thermocouple insulation resistance at room temperature

Dia (mm)	Test voltage (DC)V	Insulation resistance MΩ.m
0.25	50±5	≥100
0.5~1.5	50±5	≥1000
>1.5	500±5	≥1000

● Armored thermocouple high-temperature insulation resistance

Graduation	Length in temperature field mm	Test temperature ℃	Insulation resistance value MΩ

K,N,E,J	300	500±15	≥5
T		300±10	≥500

● Armored thermocouple measurement end form

Form	Structure	Characteristic
Outcrop type		Fast response speed; suitable for measurement of engine exhaust and other require fast response for temperature measurement; mechanical strength lower.
Bottom-touch type		Fast response speed; pressure up to 3.4 × 102MPa; is not applicable to electromagnetic interference occasions.
Insulation type		Speed of response compared with the previous two kinds is slow, long service life; anti-electromagnetic interference; no special requirements for rapid response to events that use this form.
Separating insulation type		To avoid signal interference between pairs of branch, characterized by the same insulation type.

■ Installation of fixture and nominal dimension

Variety	Installation of fixture and type	D	8	6	5	4.5	4	3	Nominal pressure MPa	Remark
Ferrule thread									fixed ferrule thread 50 active ferrule thread normal pressure	single:d=2~8 dual:d=3~8

		M	M16×1.5				M12×1.5
		H	15				15
		S	22				19


Ferrule flange		D	60(95)				50(95)		fixed ferrule flange 50 active ferrule flange normal pressure	single:d=3~8 dual:d=3~8
		D1	42(65)				36(65)
		D2	24(45)				20(45)
		d0	3-9(4-14)				3-7(4-14)
		H	10(16)
		h	2
		s	22				19

Ferrule flange size in () specified in the contract: ferrule flange D1 = 65mm.

■ Armored thermocouple structure
Description: • The minimum outer diameter of armored thermocouple, K type is Φ0.25mm, E type is Φ1.0mm, the maximum outer diameter of armored thermocouple, K type is Φ8mm, be ing able to provide Φ10mm.
• The minimum outer diameter of dual insulation type thermocouple is Φ3.0mm, the minimum outside diameter of separating insulation type is Φ4.0mm.
• The minimum outer diameter of flameproof armored thermocouple is Φ3.0mm.
• The minimum outer diameter of fixed ferrule thread and fixed ferrule flange armored thermocouple is Φ3.0mm.