Sheathed/Armoured Thermocouple (Competitive Price Around China)
Application:
It is usually cooperated with display instrument, recording instrument and computer etc. It can measure temperature of liquid, vapor and solid surface ranging from -40ºC to +1600ºC during production processes directly.
Feature:
1. With short thermal response time, reducing dynamic error.
2. Bending installation and wide measuring range.
3. Good mechanical performance, pressure-resistant, shock-resistant, impact-resistant
Working Principle:
The two electrodes of sheathed thermocouple are made of different conductor materials. when there is temperature difference between measuring end and reference end, there will be hydroelectric potential, then the instrument shows the corresponding temperature of the hydroelectric potential. The hydroelectric potential of sheathed thermocouple will raise according to the temperature measuring end. The magnitude of hydroelectric potential has relationship with the materials of sheathed thermocouple conductor and temperature difference of two ends only while non-relevant to length, diameter of thermal electrode.
Structure Principle:
The structure sheathed thermocouple is made up of conductor, high temperature insulation oxidizedmagnesium tube and 1Cr18Ni9Ti stainless steel protection tube, through many integral pulings. The basic sturcture of sheathed thermocouple is mainly made up of connection box, connection and sheathed thermocouple, connected with various installation fixing devices.
Measuring Range & Tolerance:
| Type |
Thermal Elements |
Tolerance Class |
| 1 |
2 |
| Tolerance Value |
Measureing RangeºC |
Tolerance Value |
Measuring RangeºC |
| WRNK |
NiCr-NiSi |
±1.5ºC |
-40~+375 |
±2.5ºC |
-40~+333 |
| ±0.004 |t| |
375~1000 |
±0.0075|t| |
333~1200 |
| WRMK |
NiCrSi-NiSi |
±1.5ºC |
-40~+375 |
±2.5ºC |
-40~+333 |
| ±0.004 |t| |
375~1000 |
±0.0075|t| |
333~1200 |
| WREK |
NiCr-CuNi |
±1.5ºC |
-40~+375 |
±2.5ºC |
-40~+333 |
| ±0.004 |t| |
375~800 |
±0.0075|t| |
333~900 |
| WRFK |
Fe-CuNi |
±1.5ºC |
-40~+375 |
±2.5ºC |
-40~+333 |
| ±0.004 |t| |
375~750 |
±0.0075|t| |
333~750 |
| WRCK |
Cu-CuNi |
±0.5ºC |
-40~+125 |
±1ºC |
-40~+133 |
| ±0.004 |t| |
125~350 |
±0.0075|t| |
133~1000 |
| WRPK |
PtRh10-Pt |
±1ºC |
0~1100 |
±1.5ºC |
0~600 |
| ±[1+0.003(t-1100)] |
1100~1600 |
±0.0025|t| |
600~1600 |
Audited Supplier 
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