Brief Description

The WRN-621 assembly thermocouple is used as asensor to measure temperature, usually matched with display instruments,recording meter and electronic regulator. It can directly measure temperaturefrom 0oC to 1800oC of liquid, vapor, gas medium and solidsurface during various production processes.

Since 1987,according to the national regulations, our factory have been producing thermocouplemade from PtRh30-PtRh6, PtRh10, NiCr-NiSi, NiCr-CuNi, Cu-CuNi, Fe-CuNi etc underthe IEC international standard index numbers, and JB/T9238-1 999 standard aswell.

Category   Model   Graduation   Range   Allowable  error(△t℃)  

Platinum rhodium30-Platinum  rhodium6   WRR   B   0-1800   ±1.5℃  or ±0.0025∣t∣  

Platinum rhodium10-platinum   WRP   S   0-1600   ±1.5℃  or ±0.0025∣t∣  

Nickel  chromium-nickel silicon   WRN   K   0-1300   ±2.5℃  or ±0.0075∣t∣  

Nickel  chromium-copper nickel   WRE   E   0-800   ±2.5℃  or ±0.0075∣t∣  

Model of WRN-621 assembly thermocouple

W    Temperature  meter  

R   Thermocouple    

□thermocouple material   R) Platinum  rhodium30-Platinum rhodium6  

P) Platinum  rhodium10-platinum    

N) Nickel  chromium-nickel silicon  

E) Nickel  chromium-copper nickel  

□ install and fixed type   1) without  fixed device    

2)fixed thread  type  

3)movable  flange type    

4)fixed  flange type  

5)movable  flange with square tube type  

6) fixed  thread with tapered tube type  

□ junction box type    2)splash  proof type    

3)waterproof  type  

4)explosion-proof  type  

□ design series number    0)ø16mm protecting tube    

1)ø25mm protecting tube(duplex tubes)    

2)ø16mm high aluminum tube(simplex tube)    

3)ø20mm high aluminum tube    

Fixed Thread Thermocouple with tapered tube

Thermocouple    Model   Graduation   Temp range ℃   Protection  tube material   Specs   Junction Box(head)    

Total lengthL mm   Insertion  length l mm  

Simplex  NiCr-NiSi   WRN-621     K   0~800 0~1000    1Cr18Ni9Ti   225 250 300 350 400     75 100 150 200 250     Splash-proof  type  

WRN-621A  

Duplex  Nicr-NiSi   WRN2-621  

Simplex  NiCr-CuNi   WRE-621     E   0~600   1Cr18Ni9Ti  

WRE-621A  

Duplex  NiCr-CuNi   WRE2-621  

Simplex  NiCr-NiSi   WRN-631    K   0~8000~1000   1Cr18Ni9Ti    Water-proof  type  

Duplex  NiCr-NiSi   WRN2-631  

Simplex  NiCr-CuNi   WRE-631    E   0~600   1Cr18Ni9Ti  

Duplex  NiCr-CuNi   WRE2-631  

Note: 1)Thermal-responsetime-T0.5<90seconds                   2) Nominal pressure:2.5Mpa

Model   Fixed thread  specs  

Mo  

WRN-620,  621    M33×2  

WRN-620A,62lA    Gl”  

WRN2-620,  621    M33×2  

WRE62l-1   M33×2  

WRE-621A   Gl”  

WRE2-621    M33×2  

WRN-631    M33×2  

WRN-631    M33×2  

WRE631    M33×2  

WRE2-631    M33×2  

Welded Thermocouple with fixed tapered tube

Thermocouple   Model   Graduation   Temperature ℃   Protectioncasing  material   ResponsetimeT0.5S   OperationEnd    

Simplex  NiCr-NiSi   WRN 624    K    0~600    1Cr18Ni9Ti   <20   Connected  with shell  

WRN-625   <30   insulation  

Simplex  NiCr-CuNi   WRE-624    E   <20   Connected  with shell  

WRE-625   <30   insulation  

Note: 1) headis water-proof

2) Nominal pressure: 30Mpa, flow speed:<80m/s

Note: Forspecial requirement of the WRN-621 thermocouple, please contact the manufacturer.