Assembly thermocouple with ceramic protection tube
Product Description
Thermocouple consists of two wires, each made of different metal, welded together at one end. When the
welded point(measuring junction) is heated, a thermoelectromotive force is produced that is proportional
of the temperature difference between the welded point and the other end (reference junction).
Therefore, by messuring this thermoelectromotive force either with the reference junction temperature kept
constant or by using an automatic compensation curciut, the measuring junction temperature can be measured.
The thermoelectromotive force of a thermocouple is independent of the diameter or length of the wire used and
depends only on the type of wire used.
These thermocouples are typically used in high temperature processes in furnaces in the ceramic industry,
glassmaking, foundry and in places where the use of metallic protections due to high temperatures is not allowed,
chemical attacks or sometimes at lower temperatures where the media or the environment atmosphere is harmful to
metallic tubes.
Main application at temperatures between 1000°C and 1650 °C.
Technical Data Sheet
Drawing
| Type of thermocouple core | |||||||
| Material Type | Leg | core material | Leg dia | JIS C 1602 | ANSI | ||
| JIS | ANSI | Max.operating temp . In normal application(℃) | Max.operating temp . In overheated application(℃) | Max.operaring temp.(℃) | |||
| B | + | Platinum 70% + rhodium 30% | 0.5 | 0.5 | 1500 | 1700 | 1700 |
| - | Platinum 94% + rhodium 6% | 0.5 | 0.5 | ||||
| R | + | Platinum 87% + rhodium 13% | 0.5 | 0.5 | 1400 | 1600 | 1480 |
| - | high purity platinum | 0.5 | 0.5 | ||||
| S | + | Platinum90%+ rhodium 10% | 0.5 | 0.5 | |||
| - | high purity platinum | 0.5 | 0.5 | ||||
| K | + | Nickel 90% + chromiun 10% Nickel 95% + Manganese 2% +Aluminum 2% | 3.2 | 3.2 | 1000 | 1200 | 1260 |
| 2.3 | 1.6 | 900 | 1100 | 1090 | |||
| 1.6 | 0.8 | 850 | 1050 | 980 | |||
| 1 | 0.5 | 750 | 950 | 870 | |||
| 0.65 | 0.32 | 650 | 850 | 870 | |||
| E | + - | Nickel 90% +chromiun 10% Copper 55%+nickel 45 % | 3.2 | 3.2 | 700 | 800 | 870 |
| 2.3 | 1.6 | 600 | 750 | 650 | |||
| 1.6 | 0.8 | 550 | 650 | 540 | |||
| 1 | 0.5 | 500 | 550 | 430 | |||
| 0.65 | 0.32 | 450 | 550 | 430 | |||
| J | + - | high purity iron Copper 55%+nickel 45 % | 3.2 | 3.2 | 600 | 750 | 760 |
| 2.3 | 1.6 | 550 | 750 | 590 | |||
| 1.6 | 0.8 | 500 | 650 | 480 | |||
| 1 | 0.5 | 450 | 650 | 370 | |||
| 0.65 | 0.32 | 400 | 500 | 370 | |||
| T | + - | high purity copper Copper 55%+nickel 45 % | 1.6 | 1.6 | 300 | 350 | 370 |
| 1 | 0.8 | 250 | 300 | 260 | |||
| 0.65 | 0.5 | 200 | 250 | 200 | |||
| 0.32 | 0.32 | 200 | 250 | 200 | |||
| In addition to the above, special thermocouples such as L type, C type (W-W26% Re), Cu-CoAu etc,are available | |||||||
| MI type probe data | |||||||
| Sheath Material | Outer Sheath(mm) | Core Wire Dia.(mm) | |||||
| K, N Types | E, J, T Types | S, R Types | B Type | Out Dia. | Wall Thickness | K,N,E,J,T Types | S,R,B Types |
| SS304, SS321, SS316, SS310, Incl600, Nicrobell | SS304, SS321, SS316 | Incl600, Nicrobell | Incl600, Nicrobell | 0.5 | 0.05-0.10 | 0.08-0.12 | --- |
| 1.0 | 0.10-0.20 | 0.15-0.20 | --- | ||||
| 1.5 | 0.15-0.25 | 0.23-0.30 | --- | ||||
| 1.6 | 0.16-0.26 | 0.26-0.36 | --- | ||||
| 2.0 | 0.25-0.35 | 0.40-0.50 | 0.25-0.30 | ||||
| 3.0 | 0.38-0.48 | 0.50-0.60 | 0.30-0.40 | ||||
| 3.2 | 0.48-0.58 | 0.58-0.68 | 0.30-0.40 | ||||
| 4.0 | 0.52-0.62 | 0.60-0.70 | 0.35-0.40 | ||||
| 4.8 | 0.73-0.83 | 0.75-0.85 | 0.40-0.45 | ||||
| 5.0 | 0.78-0.88 | 0.80-0.90 | 0.40-0.45 | ||||
| 6.0 | 0.98-1.08 | 0.90-1.10 | 0.45-0.50 | ||||
| 6.4 | 1.05-1.15 | 1.02-1.12 | 0.45-0.50 | ||||
| 8.0 | 1.30-1.44 | 1.30-1.40 | 0.45-0.50 | ||||
| 12.7 | 1.75-1.90 | 1.95-2.05 | --- | ||||