Explosion-proof and intrinsic safety thermocouple
Explosion-proof and intrinsic safety thermocouple
Brief Description

WRNK2-440 Explosion-proof and intrinsic safety type thermocouple is a temperature sensor, widely applied in the chemical industrial automatic control system. It transfers the object temperature to electrical signal, and sends it to display, record and adj

Details

In chemical plant, the production field is often accompanied with various inflammable, explosive chemical gas & steam, it’s not safe to use common thermocouple which is easy to result in gas explosion. Therefore, explosion-proof and intrinsic safety type thermocouple is necessary. Our explosion-proof and intrinsic safety type thermocouple are used in these dangerous occasions of which temperature group zone are dII BT4 ~ dII CT6, ib II BT4, ia ll BT4, ia ll CT6.

Model

Graduation

Range ℃

Accuracy

Allowable deviation

WRN,WRNK WRN2,WRNK2

 

K

0~800℃

I

±1 5℃ or ±0. 004 t

±2.5℃ or ±0.0075t

WRE,WREK WRE2,WREK2

 

E

 

0~600℃

I

±1.5℃ or ±0.004t

±2 5℃ or ±0 0075 t

Specifications 

Model

Graduation

Measure range

Structure

Protection

tube diameter

(mm)

Insertion length l(mm)

Response

 time

T0.5s

Nominal pressure (MPa)

Exd grade

WRNK-240

WRNK2-240

K

0~800

M27×2

 

Fixed thread

Φ8

 

Φ6

 

Φ5

 

Based on flange size

≤8

 

≤6

 

≤4

10

dIIBT4 dIIBT6 or dlICT4 dIICT6

WREK -240

WREK2-240

E

0~600

WRNK- 440

WRNK2-440

K

0~800

 

Fixed flange

6.4

WREK-440

WREK2-440

F

0~600