WREK-281 WREK-282 Little junction box Armored thermocouple

 

WREK-281 WREK-282 Little junction box Armored thermocouple Brief Description

WREK-281 WREK-282 Little junction box Armored thermocouple is armoured type with fixed thread connection, little junction box, WREK series armoured type Type K Thermocouple WREK-281 WREK-282 has advantages of being able to bend, high temp resistance, quick thermal response time and being sturdy and durable etc. Like industrial assembly-type thermocouple, as sensor of temp measurement,  WREK-281 WREK-282 Little junction box Armored thermocouple is usually used with display, recorder and electronic regulator. Moreover,  WREK-281 WREK-282 Little junction box Armored thermocouple can also be the temp sensor element of assembly-type thermocouple. WREK-281 WREK-282 Little junction box Armored thermocouple can measure temp of liquid, stream, gas and surface of solid range 0℃～700℃ in all production processes. It is as per GB/T18404-2001 standard.

 

WREK-281 WREK-282 Little junction box Armored thermocouple Main technical parameter

 WREK-281 WREK-282 Little junction box Armored thermocouple Temperature measurement range and tolerance

Category	Code	Graduation	Outer diameter of well mm	Temperature℃	Max temp℃	Allowed error △t
						Measuring range℃	Allowed error value
NiCr-CuNi	WREK	T	≥Φ3	600	700	0～700	±2.5℃/±0.75%t

Note：1）t is the absolute value of measuring temperature.

 

WREK-281 WREK-282 Little junction box Armored thermocouple Thermal response time

When the temperature appear step change, the thermocouple output variation is to the equivalent of 50% of the change, The time required is called the thermal response time “T0.5”

 

Thermal response time of  WREK-281 WREK-282 Little junction box Armored thermocouple should not be more than requirements of the following table:

Thermal response time      T0.5S	Shell connecting type	Insulation type
Well diameter（min）
2.0	0.4	0.5
3.0	0.6	1.2
4.0	0.8	2.5
5.0	1.2	4.0
6.0	2.0	6.0
8.0	4.0	8.0

 

 

WREK-281 WREK-282 Little junction box Armored thermocouple Model

W	R	Spec
		N	NiCr－NiSi
		E	NiCr－CuNi
		C	Cu－CuNi
		Material of thermometric element	K
			Armoured type	-	1	No fixed device
					2	Fixed adjustable thread joint
					3	Flexible adjustable thread joint
					4	Fixed adjustable thread flange
					5	Flexible adjustable thread flange
					Mounting fixed type	0	No junction box
						2	Splash-proof
						3	Water-proof
						8	Hand lever
						8	Little junction box
						9	With compensating lead wire
						Junction box type	1	Insulation
							2	Shell connecting
							7	Insulation（Hand lever）
							8	Shell connecting（Hand lever）
							Working end type	3	3-couples
								4	4-couples
								5	5-couples
								6	6-couples
								Multi-couples
W	R	E	K	-	2	8	1 2	□

 

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