Thermocouple
It is usually used in conjunction with display ins
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Description
I. application
It is usually used in conjunction with display instruments, recording instruments, computers and so on. Direct measurement of liquid, steam and gas medium and solid surface temperature at 0~1300 C in various production processes.
Two, characteristics
1. Simple assembly and convenient replacement.
2. The pressure spring type temperature sensing element has good anti vibration performance.
3, the scope of measurement is large.
4, high mechanical strength, good pressure resistance;
Three, working principle
The electrodes of the thermocouple are made up of two different conductor materials. When there is a temperature difference between the measuring end and the reference end, the thermo electric potential is generated, and the working instrument displays the temperature corresponding to the thermal potential.
Four, main technical parameters
1, product implementation standards
IEC584
IEC1515
GB/T16839-1997
JB/T5582-91
2, ambient temperature insulation resistance
The thermocouple at ambient temperature is 20 + 15 C, the relative humidity is not greater than 80%, the test voltage is 500 + 50V (DC), the insulation resistance between the electrode and the outer sleeve is more than 100M ohm.M.
3, measurement range and tolerance
Model | Graduation | Allowable error and mate grade | |||
Level I | Level II | ||||
Allowable difference | Temperature range C | Allowable difference | Temperature range C | ||
WRN | K | + 1.5 C | -40 ~ +375 | + 2.5 C | -40 ~ +333 |
0.004 t | 375~1000 | 0.0075 t | 333~1200 | ||
WRM | N | + 1.5 C | -40 ~ +375 | + 2.5 C | -40 ~ +333 |
0.004 t | 375~1000 | 0.0075 t | 333~1200 | ||
WRE | E | + 1.5 C | -40 ~ +375 | + 1.5 C | -40 ~ +333 |
0.004 t | 375~800 | 0.004 t | 333~900 | ||
WRF | J | + 1.5 C | -40 ~ +375 | + 1.5 C | -40 ~ +333 |
0.004 t | 375~750 | 0.004 t | 333~750 | ||
WRC | T | + 1.5 C | -40- ~ +125 | + 1 c | -40 ~ +333 |
0.004 t | 125~350 | 0.0075 t | 133~350 | ||
WRP | S | + 1 c | 0 ~ +1100 | + 2.5 C | 0~600 |
+ [1+0.003 (t-1100)] | 1100~1600 | 0.0025 t | 600~1600 | ||
Five. Model naming method
W temperature meter | |||||||
R thermocouple Z thermal resistance | |||||||
Grading of temperature sensor material M Ni Cr Si Ni Si N N Ni Cr Ni Si K E Ni Cr Cu Ni E F Fe Cu Ni J C copper copper nickel T P platinum thermal resistance Pt100 C copper thermal resistance Cu | |||||||
Install fixed form 1 no fixtures. 2 fixed thread 3 movable flange 4 fixed flange 5 flexible pipe connector. 6 fixed thread conical protection tube type 7 straight pipe connection type 8 fixed threaded connection type 9 movable threaded pipe joint type | |||||||
Junction box form 2 blowout preventer 3 waterproof | |||||||
Diameter of protection tube 0 diameter 16 (other specifications diameter need note) 1, 20 (12). 2 20 high aluminum tube 3 25 high aluminum tube | |||||||
Working end form G variable cross-section | |||||||
W | R | N | Two | Three | Zero | G | Examples of typical models |
Six, model specification
1. Thermocouple without fixed device
Model | Graduation | Temperature range C | Thermal response time | Protective tube material | Specifications | |
D | L*l | |||||
WRM-120 WRM-130 | N | 0-800 | <60s | 1Cr18Ni9Ti | Phi 16 | 300*150 350*200 400*250 450*300 500*350 650*500 1150*1000 1650*1500 2150*2000 |
WRM2-120 WRM2-130 | 0-1000 | 0Cr25Ni20 | ||||
WRM-120G WRM-130G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-120G WRM2-130G | 0-1000 | 0Cr25Ni20 | ||||
WRN-120 WRN-130 | K | 0-800 | <60s | 1Cr18Ni9Ti | ||
WRN2-120 WRN2-130 | 0-1000 | 0Cr25Ni20 | ||||
WRN-120G WRN-130G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-120G WRN2-130G | 0-1000 | 0Cr25Ni20 | ||||
WRE-120 WRE-130 | E | 0-700 | <60s | 1Cr18Ni9Ti | ||
WRE2-120 WRE2-130 | ||||||
WRE-120G WRE-130G | <24s | |||||
WRE2-120G WRE2-130G | ||||||
WRC-120 WRC-130 | T | 0-350 | <60s | 1Cr18Ni9Ti | ||
WRC2-120 WRC2-130 | ||||||
WRC-120G WRC-130G | <24s | |||||
WRC2-120G WRC2-130G | ||||||
WRF-120 WRF-130 | J | 0-600 | <60s | 1Cr18Ni9Ti | ||
WRF2-120 WRF2-130 | ||||||
WRF-120G WRF-130G | <24s | |||||
WRF2-120G WRF2-130G | ||||||
WRM-121 WRM-131 | N | 0-800 | <90s | 1Cr18Ni9Ti | Phi 20 | |
WRM2-121 WRM2-131 | 0-1000 | 0Cr25Ni20 | ||||
WRM-121G WRM-131G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-121G WRM2-131G | 0-1000 | 0Cr25Ni20 | ||||
WRN-121 WRN-131 | K | 0-800 | <90s | 1Cr18Ni9Ti | ||
WRN2-121 WRN2-131 | 0-1000 | 0Cr25Ni20 | ||||
WRN-121G WRN-131G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-121G WRN2-131G | 0-1000 | 0Cr25Ni20 | ||||
WRE-121 WRE-131 | E | 0-700 | <90s | 1Cr18Ni9Ti | ||
WRE2-121 WRE2-131 | ||||||
WRE-121G WRE-131G | <24s | |||||
WRE2-121G WRE2-131G | ||||||
WRC-121 WRC-131 | T | 0-350 | <90s | 1Cr18Ni9Ti | ||
WRC2-121 WRC2-131 | ||||||
WRC-121G WRC-131G | <24s | |||||
WRC2-121G WRC2-131G | ||||||
WRF-121 WRF-131 | J | 0-600 | <90s | 1Cr18Ni9Ti | ||
WRF2-121 WRF2-131 | ||||||
WRF-121G WRF-131G | <24s | |||||
WRF2-121G WRF2-131G | ||||||
Note: 1), if the remaining material protection tube can be ordered.
2) thermocouple with variable cross-section is equipped with armored elements.
2. Fixed thread thermocouple
Model | Graduation | Temperature range C | Thermal response time | Protective tube material | Specifications | |
D | L*l | |||||
WRM-220 WRM-230 | N | 0-800 | <60s | 1Cr18Ni9Ti | Phi 16 | 300*150 350*200 400*250 450*300 500*350 650*500 1150*1000 1650*1500 2150*2000 |
WRM2-220 WRM2-230 | 0-1000 | 0Cr25Ni20 | ||||
WRM-220G WRM-230G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-220G WRM2-230G | 0-1000 | 0Cr25Ni20 | ||||
WRN-220 WRN-230 | K | 0-800 | <60s | 1Cr18Ni9Ti | ||
WRN2-220 WRN2-230 | 0-1000 | 0Cr25Ni20 | ||||
WRN-220G WRN-230G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-220G WRN2-230G | 0-1000 | 0Cr25Ni20 | ||||
WRE-220 WRE-230 | E | 0-700 | <60s | 1Cr18Ni9Ti | ||
WRE2-220 WRE2-230 | ||||||
WRE-220G WRE-230G | <24s | |||||
WRE2-220G WRE2-230G | ||||||
WRC-220 WRC-230 | T | 0-350 | <60s | 1Cr18Ni9Ti | ||
WRC2-220 WRC2-230 | ||||||
WRC-220G WRC-230G | <24s | |||||
WRC2-220G WRC2-230G | ||||||
WRF-220 WRF-230 | J | 0-600 | <60s | 1Cr18Ni9Ti | ||
WRF2-220 WRF2-230 | ||||||
WRF-220G WRF-230G | <24s | |||||
WRF2-220G WRF2-230G | ||||||
WRM-221 WRM-231 | N | 0-800 | <90s | 1Cr18Ni9Ti | Phi 20 | |
WRM2-221 WRM2-231 | 0-1000 | 0Cr25Ni20 | ||||
WRM-221G WRM-231G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-221G WRM2-231G | 0-1000 | 0Cr25Ni20 | ||||
WRN-221 WRN-231 | K | 0-800 | <90s | 1Cr18Ni9Ti | ||
WRN2-221 WRN2-231 | 0-1000 | 0Cr25Ni20 | ||||
WRN-221G WRN-231G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-221G WRN2-231G | 0-1000 | 0Cr25Ni20 | ||||
WRE-221 WRE-231 | E | 0-700 | <90s | 1Cr18Ni9Ti | ||
WRE2-221 WRE2-231 | ||||||
WRE-221G WRE-231G | <24s | |||||
WRE2-221G WRE2-231G | ||||||
WRC-221 WRC-231 | T | 0-350 | <90s | 1Cr18Ni9Ti | ||
WRC2-221 WRC2-231 | ||||||
WRC-221G WRC-231G | <24s | |||||
WRC2-221G WRC2-231G | ||||||
WRF-221 WRF-231 | J | 0-600 | <90s | 1Cr18Ni9Ti | ||
WRF2-221 WRF2-231 | ||||||
WRF-221G WRF-231G | <24s | |||||
WRF2-221G WRF2-231G | ||||||
Note: 1), if the remaining material protection tube can be ordered.
2) thermocouple with variable cross-section is equipped with armored elements.
3) the diameter and length of the protection tube can be customized according to customer requirements.
3, movable flange thermocouple
Model | Graduation | Temperature range C | Thermal response time | Protective tube material | Specifications | |
D | L*l | |||||
WRM-320 WRM-330 | N | 0-800 | <60s | 1Cr18Ni9Ti | Phi 16 | Three hundred Three hundred and fifty Four hundred Four hundred and fifty Five hundred Six hundred and fifty One thousand one hundred and fifty One thousand six hundred and fifty Two thousand one hundred and fifty |
WRM2-320 WRM2-330 | 0-1000 | 0Cr25Ni20 | ||||
WRM-320G WRM-330G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-320G WRM2-330G | 0-1000 | 0Cr25Ni20 | ||||
WRN-320 WRN-330 | K | 0-800 | <60s | 1Cr18Ni9Ti | ||
WRN2-320 WRN2-330 | 0-1000 | 0Cr25Ni20 | ||||
WRN-320G WRN-330G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-320G WRN2-330G | 0-1000 | 0Cr25Ni20 | ||||
WRE-320 WRE-330 | E | 0-700 | <60s | 1Cr18Ni9Ti | ||
WRE2-320 WRE2-330 | ||||||
WRE-320G WRE-330G | <24s | |||||
WRE2-320G WRE2-330G | ||||||
WRC-320 WRC-330 | T | 0-350 | <60s | 1Cr18Ni9Ti | ||
WRC2-320 WRC2-330 | ||||||
WRC-320G WRC-330G | <24s | |||||
WRC2-320G WRC2-330G | ||||||
WRF-320 WRF-330 | J | 0-600 | <60s | 1Cr18Ni9Ti | ||
WRF2-320 WRF2-330 | ||||||
WRF-320G WRF-330G | <24s | |||||
WRF2-320G WRF2-330G | ||||||
WRM-321 WRM-331 | N | 0-800 | <90s | 1Cr18Ni9Ti | Phi 20 | |
WRM2-321 WRM2-331 | 0-1000 | 0Cr25Ni20 | ||||
WRM-321G WRM-331G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-321G WRM2-331G | 0-1000 | 0Cr25Ni20 | ||||
WRN-321 WRN-331 | K | 0-800 | <90s | 1Cr18Ni9Ti | ||
WRN2-321 WRN2-331 | 0-1000 | 0Cr25Ni20 | ||||
WRN-321G WRN-331G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-321G WRN2-331G | 0-1000 | 0Cr25Ni20 | ||||
WRE-321 WRE-331 | E | 0-700 | <90s | 1Cr18Ni9Ti | ||
WRE2-321 WRE2-331 | ||||||
WRE-321G WRE-331G | <24s | |||||
WRE2-321G WRE2-331G | ||||||
WRC-321 WRC-331 | T | 0-350 | <90s | 1Cr18Ni9Ti | ||
WRC2-321 WRC2-331 | ||||||
WRC-321G WRC-331G | <24s | |||||
WRC2-321G WRC2-331G | ||||||
WRF-321 WRF-331 | J | 0-600 | <90s | 1Cr18Ni9Ti | ||
WRF2-321 WRF2-331 | ||||||
WRF-321G WRF-331G | <24s | |||||
WRF2-321G WRF2-331G | ||||||
Note: 1), if the remaining material protection tube can be ordered.
2) thermocouple with variable cross-section is equipped with armored elements.
3) the diameter and length of the protection tube can be customized according to customer requirements.
4. Fixed flange thermocouple
Model | Graduation | Temperature range C | Thermal response time | Protective tube material | Specifications | |
D | L*l | |||||
WRM-420 WRM-430 | N | 0-800 | <60s | 1Cr18Ni9Ti | Phi 16 | 300*150 350*200 400*250 450*300 500*350 650*500 1150*1000 1650*1500 2150*2000 |
WRM2-420 WRM2-430 | 0-1000 | 0Cr25Ni20 | ||||
WRM-420G WRM-430G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-420G WRM2-430G | 0-1000 | 0Cr25Ni20 | ||||
WRN-420 WRN-430 | K | 0-800 | <60s | 1Cr18Ni9Ti | ||
WRN2-420 WRN2-430 | 0-1000 | 0Cr25Ni20 | ||||
WRN-420G WRN-430G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-420G WRN2-430G | 0-1000 | 0Cr25Ni20 | ||||
WRE-420 WRE-430 | E | 0-700 | <60s | 1Cr18Ni9Ti | ||
WRE2-420 WRE2-430 | ||||||
WRE-420G WRE-430G | <24s | |||||
WRE2-420G WRE2-430G | ||||||
WRC-420 WRC-430 | T | 0-350 | <60s | 1Cr18Ni9Ti | ||
WRC2-420 WRC2-430 | ||||||
WRC-420G WRC-430G | <24s | |||||
WRC2-420G WRC2-430G | ||||||
WRF-420 WRF-430 | J | 0-600 | <60s | 1Cr18Ni9Ti | ||
WRF2-420 WRF2-430 | ||||||
WRF-420G WRF-430G | <24s | |||||
WRF2-420G WRF2-430G | ||||||
WRM-421 WRM-431 | N | 0-800 | <90s | 1Cr18Ni9Ti | Phi 20 | |
WRM2-421 WRM2-431 | 0-1000 | 0Cr25Ni20 | ||||
WRM-421G WRM-431G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRM2-421G WRM2-431G | 0-1000 | 0Cr25Ni20 | ||||
WRN-421 WRN-431 | K | 0-800 | <90s | 1Cr18Ni9Ti | ||
WRN2-421 WRN2-431 | 0-1000 | 0Cr25Ni20 | ||||
WRN-421G WRN-431G | 0-800 | <24s | 1Cr18Ni9Ti | |||
WRN2-421G WRN2-431G | 0-1000 | 0Cr25Ni20 | ||||
WRE-421 WRE-431 | E | 0-700 | <90s | 1Cr18Ni9Ti | ||
WRE2-421 WRE2-431 | ||||||
WRE-421G WRE-431G | <24s | |||||
WRE2-421G WRE2-431G | ||||||
WRC-421 WRC-431 | T | 0-350 | <90s | 1Cr18Ni9Ti | ||
WRC2-421 WRC2-431 | ||||||
WRC-421G WRC-431G | <24s | |||||
WRC2-421G WRC2-431G | ||||||
WRF-421 WRF-431 | J | 0-600 | <90s | 1Cr18Ni9Ti | ||
WRF2-421 WRF2-431 | ||||||
WRF-421G WRF-431G | <24s | |||||
WRF2-421G WRF2-431G | ||||||
Note: 1. If the remaining material is protected, the order can be ordered.
2. Variable section type thermocouple is equipped with armored elements.
3, the diameter and length of the protection tube can be customized according to customer requirements.
5. Fixed thread conical protection tube thermocouple
Model | Graduation | Temperature range C | Thermal response time | Protective tube material | Specifications | |
D | L | |||||
WRM-630 | N | 0-1000 | <90s | 1Cr18Ni9Ti | Phi 16 | Two hundred Four hundred Five hundred Seven hundred and fifty One thousand |
WRN-630 | K | <90s | ||||
WRE-630 | E | 0-700 | <90s | |||
WRC-630 | T | 0-350 | <90s | |||
WRF-630 | J | 0-600 | <90s | |||
6. Flexible junction type thermocouple
Model | Graduation | Temperature range C | Thread specification | Protective tube material | Specifications | |
D | L | |||||
WRM-53 | N | 0-1000 | M20*1.5 | 1Cr18Ni9Ti | Phi 16 | One hundred and fifty Two hundred Two hundred and fifty Three hundred Three hundred and fifty Four hundred Four hundred and fifty Five hundred Seven hundred and fifty One thousand |
WRM-53A | NPT1/2 | |||||
WRN-53 | K | M20*1.5 | ||||
WRN-53A | NPT1/2 | |||||
WRE-53 | E | 0-700 | M20*1.5 | |||
WRE-53A | NPT1/2 | |||||
WRC-53 | T | 0-350 | M20*1.5 | |||
WRC-53A | NPT1/2 | |||||
WRF-53 | J | 0-600 | M20*1.5 | |||
WRF-53A | NPT1/2 | |||||
7. Straight tube joint type thermocouple.
Model | Graduation | Temperature range C | Thread specification | Protective tube material | Specifications | |
D | L | |||||
WRM-73 | N | 0-1000 | M20*1.5 | 1Cr18Ni9Ti | Phi 16 | One hundred and fifty Two hundred Two hundred and fifty Three hundred Three hundred and fifty Four hundred Four hundred and fifty Five hundred Seven hundred and fifty One thousand |
WRM-73A | NPT1/2 | |||||
WRN-73 | K | M20*1.5 | ||||
WRN-73A | NPT1/2 | |||||
WRE-73 | E | 0-700 | M20*1.5 | |||
WRE-73A | NPT1/2 | |||||
WRC-73 | T | 0-350 | M20*1.5 | |||
WRC-73A | NPT1/2 | |||||
WRF-73 | J | 0-600 | M20*1.5 | |||
WRF-73A | NPT1/2 | |||||
8. Fixed threaded connection type thermocouple
Model | Graduation | Temperature range C | Thread specification | Protective tube material | Specifications | |
D | L | |||||
WRM-83 | N | 0-1000 | M20*1.5 | 1Cr18Ni9Ti | Phi 16 | One hundred and fifty Two hundred Two hundred and fifty Three hundred Three hundred and fifty Four hundred Four hundred and fifty Five hundred Seven hundred and fifty One thousand |
WRM-83A | NPT1/2 | |||||
WRN-83 | K | M20*1.5 | ||||
WRN-83A | NPT1/2 | |||||
WRE-83 | E | 0-700 | M20*1.5 | 1Cr18Ni9Ti | ||
WRE-83A | NPT1/2 | |||||
WRC-83 | T | 0-350 | M20*1.5 | 1Cr18Ni9Ti | ||
WRC-83A | NPT1/2 | |||||
WRF-83 | J | 0-600 | M20*1.5 | 1Cr18Ni9Ti | ||
WRF-83A | NPT1/2 | |||||
9, movable threaded joint type thermocouple / resistance
Model | Graduation | Temperature range C | Thread specification | Protective tube material | Specifications | |
D | L | |||||
WRM-93 | N | 0-1000 | M20*1.5 | 1Cr18Ni9Ti | Phi 16 | One hundred and fifty Two hundred Two hundred and fifty Three hundred Three hundred and fifty Four hundred Four hundred and fifty Five hundred Seven hundred and fifty One thousand |
WRM-93A | NPT1/2 | |||||
WRN-93 | K | M20*1.5 | ||||
WRN-93A | NPT1/2 | |||||
WRE-93 | E | 0-700 | M20*1.5 | 1Cr18Ni9Ti | ||
WRE-93A | NPT1/2 | |||||
WRC-93 | T | 0-350 | M20*1.5 | 1Cr18Ni9Ti | ||
WRC-93A | NPT1/2 | |||||
WRF-93 | J | 0-600 | M20*1.5 | 1Cr18Ni9Ti | ||
WRF-93A | NPT1/2 | |||||
Note: 1. If there is no special agreement, L is only the reference size. The insertion depth of thermocouple / thermal resistance should be calculated according to the U dimension of the thermal installation bushing.
2, the components are elastic armoured elements, and the thermal resistance element 3 is only suitable for single element.
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