Thermocouple manufacturer and supplier-Shanghai MKYD
  aires@cepai.com

contact us

SHANGHAI MKYD INSTRUMENT

Mobile:+86-17717522891
Wechat:17717522891
Tel:+86-21-54891500
Email:aires@cepai.com
 

Office Address: 15 Floor,No 2281,West Zhongshan Road,Shanghai,China.
Factory Address:No.333 West Jianshe Road,Huaian City, Jiangsu Province, China

Type K Thermocouple WRNK-391 WRNK-392

  • Model:WRNK-391 WRNK-392
  • Structure:Output signal number :Single
  • Temperature:0~1000℃
  • Material:Nickel chromium-nickel silicon
  • Connection :Flexible adjustable thread joint
  • Others:With compensating lead wire
  • Description:Armoured type,Flexible adjustable thread joint,With compensating lead wire
Type K Thermocouple WRNK-391 WRNK-392
 

Type K Thermocouple WRNK-391 WRNK-392 Brief Description

Type K Thermocouple WRNK-391 WRNK-392 is armoured type with flexible adjustable thread joint,With compensating lead wire,Type K Thermocouple WRNK-391 WRNK-392 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, Type K Thermocouple WRNK-391 WRNK-392 is usually used with display, recorder and electronic regulator. Moreover, Type K Thermocouple WRNK-391 WRNK-392 can also be the temp sensor element of assembly-type thermocouple. Type K Thermocouple WRNK-391 WRNK-392 can measure temp of liquid, stream, gas and surface of solid range 0℃~1000℃ in all production processes. It is as per GB/T18404-2001 standard.

 

Type K Thermocouple WRNK-391 WRNK-392 Working principle

Type K Thermocouple WRNK-391 WRNK-392 working principle: two conductors with different components are welded at both ends to form a loop, measuring temperature directly side is called measurement side, terminal side is called reference side. When the temperature between measurement side and reference side has a difference, Type K Thermocouple WRNK-391 WRNK-392 will generate heat in the loop current, then connected to the display instrument, And the instrument indicates the corresponding temperature value of the thermal electromotive force generated by the thermocouple. Thermocouple thermoelectric EMF will grow with the measurement temperature’s growth, The size of the thermal electromotive force is related to the temperature of both ends. It has nothing to do with the length, diameter of the thermode. Type K Thermocouple WRNK-391 WRNK-392 structure is made of conductor, insulation magnesia and 1Cr18Ni9Ti stainless steel protection tube after many times drawing. Junction box, protective tube, insulated casing, terminals and armoured thermocouple form a basic structure of assembly-type thermocouple, with a variety of installation of fixtures.Type K Thermocouple WRNK-391 WRNK-392 has two kinds: insulation type and shell connecting type.

 

Type K Thermocouple WRNK-391 WRNK-392 Main technical parameter

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-NiSi

WRNK

K

≥Φ3

800

1000

0~1000

±2.5℃/±0.75%t

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

 

Thermal response time of Type K Thermocouple WRNK-391 WRNK-392

When the temperature appear step change, the Type K Thermocouple WRNK-391 WRNK-392 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 Type K Thermocouple WRNK-391 WRNK-392 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

 

Insulation resistance of Type K Thermocouple WRNK-391 WRNK-392

When the ambient temp is 20±15℃, and relative humidity is not more than 80﹪, the insulation resistance value between insulation Type K Thermocouple WRNK-391 WRNK-392 wires and outer tube should be as per the following table.

Well diameter mm

Test voltage V-D.C

Insulation resistance MΩ.m

0.5~1.5

50±5

≥1000

>1.5

500±50

≥1000

 

Type K Thermocouple WRNK-391 WRNK-392 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

N

K

-

3

9

1
2

 

 

If the wrnk series armoured type Type K Thermocouple WRNK-391 WRNK-392 for sale caters to your requirement, welcome to buy with us. As one of the leading such manufacturers and suppliers in China, we will offer you cheap price and excellent services.

inquiry us

INQUIRY US

微信扫一扫

添加我为好友了解更多