 application |
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| Usually used in conjunction with display instruments, recording instruments, etc. Directly measure the temperature of liquid, vapor, gas media, and solid surfaces within the range of 0-1300 ℃ in various production processes. |
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characteristic |
● Less thermal response time, reducing dynamic errors;
● Flexible installation and use;
● Large measurement range;
High mechanical strength and good pressure resistance. |
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Working principle |
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sheath thermocoupleThe two electrodes are composed of different conductor materials. When there is a temperature difference between the measuring end and the reference end, a thermoelectric potential is generated, and the working instrument displays the temperature value corresponding to the thermoelectric potential. |
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Main technical parameters
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● Product execution standards
IEC584 IEC1515 GB／T16839－1997 JB／T5582－91
● Room temperature insulation resistance
Armored tropical dollAt an ambient temperature of 20 ± 15 ℃, relative humidity not exceeding 80%, and a test voltage of 500 ± 50V (DC), the insulation resistance between the electrode and the outer sleeve is ≥ 1000M Ω. m. The insulation resistance of a 1m long sample is 1000M Ω; The insulation resistance of a 10m long sample is 100M Ω.
● Temperature measurement range and allowable deviation |
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| ● Temperature measurement range and allowable deviation |
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| model |
Graduation |
Allowable error and material grade |
| Level I |
class ii |
| Allowable deviation |
Temperature measurement range ℃ |
Allowable deviation |
Temperature measurement range ℃ |
| WRNK |
K |
±1.5℃ |
-40～+375 |
±2.5℃ |
-40～+333 |
| ±0.004│t│ |
375~1000 |
±0.0075│t│ |
333~1200 |
| WRMK |
N |
±1.5℃ |
-40～+375 |
±2.5℃ |
-40～+333 |
| ±0.004│t│ |
375~1000 |
±0.0075│t│ |
333~1200 |
| WREK |
E |
±1.5℃ |
-40～+375 |
±1.5℃ |
-40～+333 |
| ±0.004│t│ |
375~800 |
±0.004│t│ |
333~900 |
| WRFK |
J |
±1.5℃ |
-40～+375 |
±1.5℃ |
-40～+333 |
| ±0.004│t│ |
375~750 |
±0.004│t│ |
333~750 |
| WRCK |
T |
±1.5℃ |
-40～+125 |
±1℃ |
-40～+333 |
| ±0.004│t│ |
125~350 |
±0.0075│t│ |
133~350 |
| WRPK |
S |
±1℃ |
0～+1100 |
±2.5℃ |
0~600 |
| ±[1+0.003(t-1100)] |
1100~1600 |
±0.0025│t│ |
600~1600 |
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Temperature measurement range and allowable deviation |
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Code and size
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Outer diameter of armor doll
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Φ8
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Φ6
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Φ5
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Φ4
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Φ3
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Φ2
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M
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M16×1.5
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M12×1.5
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S
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22
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19
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Code and size
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Outer diameter of armor doll
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Φ8
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Φ6
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Φ5
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Φ4
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Φ3
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Φ2
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D
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Φ60
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Φ50
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D0
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Φ42
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Φ36
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D1
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Φ24
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Φ20
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S
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22
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19
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d0
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Φ9
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Φ7
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 Anti spray type
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 Waterproof type
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 Flat plug-in type
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 Circular plug-in type
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 Handle type
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 Compensation wire type
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sheath thermocoupleRecommended temperature for use |
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variety
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Sleeve Material
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Outer diameter (mm)
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Operating temperature (℃)
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Long term use temperature
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Short term usage temperature
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Armored nickel chromium nickel silicon
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1Cr18Ni9Ti
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2.0
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600
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700
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3.0,4.0,5.0,6.0,8.0
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800
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900
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GH3030
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2.0,3.0
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800
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900
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4.0,5.0
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900
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1000
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6.0,8.0
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1000
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1100
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Armored nickel chromium silicon nickel silicon
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1Cr18Ni9Ti
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2.0
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600
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700
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GH3030
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3.0,4.0,5.0,6.0,8.0
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800
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900
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2.0,3.0
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900
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1000
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4.0,5.0
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1000
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1100
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GH3039
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6.0.8.0
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1100
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1200
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2.0,3.0,4.0
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1000
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1100
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5.0.6.0.8.0
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1100
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1200
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Armored nickel chromium copper nickel
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1Cr18Ni9Ti
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2.0
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500
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600
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3.0.4.0.5.0
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600
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700
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6.0.8.0
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700
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800
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Armored Iron Copper Nickel
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1Cr18Ni9Ti
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2.0
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400
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500
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3.0.4.0.5.0
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500
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600
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Armored copper copper nickel
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1Cr18Ni9Ti
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6.0.8.0
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600
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700
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2.0,3.0.4.0.5.0
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250
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300
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Armored Platinum Rhodium 10 Platinum
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GH3039
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6.0.8.0
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300
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350
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2.0.3.0.4.0.
5.0.6.0.8.0
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1000
1100 |
1100
1200
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Additional device form |
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Hoop type
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Thermal block type
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Model naming method |
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| W |
Temperature instrument |
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R |
thermocouple |
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Index number of temperature sensing element material |
M
N
E
F
C
P
Q
R |
Nickel chromium silicon nickel silicon N
Nickel chromium nickel silicon K
Nickel chromium copper nickel E
Iron Copper Nickel J
Copper Copper Nickel T
Platinum rhodium 10 platinum S
Platinum rhodium 13 platinum R
Platinum rhodium 30- Platinum 6B |
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K
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Armored type |
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| Even number of threads |
not have
2 |
Single tube
Double branch |
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Installation fixed form |
1
2
3
4
5 |
No fixed device
Fixed card sleeve thread
Activity card sleeve thread
Fixed card sleeve flange
Activity card sleeve flange |
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Form of junction box |
2
3
6
7
8
9 |
Anti spray type
Waterproof type
Circular plug-in type
Flat plug-in type
Handle type
Compensation wire type |
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Workplace format |
1
2 |
Insulated type
Shell type |
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Additional device form |
M
G |
Contact block type
Hoop type |
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| W |
R |
N |
K |
2 - |
2 |
3 |
1 |
M |
Typical Model Example |
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Selection Notice |
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1) Model number
2) Dividing number
3) Accuracy level
4) Installation fixed form
5) Material of protective tube
6) Length or insertion length
Example A:sheath thermocouple， K-type, Class I, fixed sleeve thread, protective tube GH3030, length 450mm, insertion length 300mm, WRNK-231, K, L × l=450 × 300, Class I, protective tube GH3030. |
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Model and specifications |
temperature-sensing element
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name
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model
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Graduation
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specifications
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Workplace format
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| d |
L1 |
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Single Platinum Rhodium 10 Platinum
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WRPK-101
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S
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Φ2
Φ3
Φ4
Φ5
Φ6
Φ8
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75
100
150
200
250
300
400
500
750
1000
2000
3000
4000
5000
7500
10000
15000
20000
25000
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Insulated type
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| WRPK-102 |
Shell type |
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Double platinum rhodium 10 platinum
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WRPK2-101
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Insulated type
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| WRPK2-102 |
Shell type |
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Single nickel chromium silicon nickel silicon
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WRMK-101
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N
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Insulated type
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| WRMK-102 |
Shell type |
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Double branch nickel chromium silicon nickel silicon
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WRMK2-101
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Insulated type
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| WRMK2-102 |
Shell type |
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Single nickel chromium nickel silicon
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WRNK-101
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K
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Insulated type
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| WRNK-102 |
Shell type |
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Double branch nickel chromium nickel silicon
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WRNK2-101
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Insulated type
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| WRNK2-102 |
Shell type |
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Single nickel chromium nickel silicon
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WREK-101
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E
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Insulated type
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| WREK-102 |
Shell type |
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Single nickel chromium copper nickel
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WREK2-101
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Insulated type
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| WREK2-102 |
Shell type |
| Single copper copper nickel |
WRCK-101 |
T |
Insulated type
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| WRCK-102 |
Shell type |
| Double copper copper nickel |
WRCK2-101 |
Insulated type
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| WRCK2-102 |
Shell type |
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Single iron copper nickel
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WRFK-101
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J
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Insulated type
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| WRFK-102 |
Shell type |
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Double iron copper nickel
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WRFK2-101
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Insulated type
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| WRFK2-102 |
Shell type |
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