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Thermocouple’s long-time stability and service life will be up to outside protection tube. Thermocouple shielded by silicon nitride thermocouple sheath will quickly react to temperature due to its good thermal conductivity and thinner wall thickness. Silicon nitride thermocouple protection tube is for continuous temperature measurement and protect thermocouple without erosion.
Physical and chemical index
|
Types |
GPSN |
RSSN |
|
Density |
>3.2g/cm3 |
>2.4g/cm3 |
|
Si3N4 content |
>92% |
>92% |
|
Flexural strength |
>600Mpa |
>200Mpa |
|
Compressive strength |
>1500Mpa |
|
|
Thermal conductivity(W/mk) |
16-22 |
14 |
|
Porosity |
0 |
<15% |
|
Thermal expansion coeff.(RT-1000℃) |
3.2 |
2.8 |
|
Max temperature In air |
1400℃ |
1150℃ |
|
Hardness(HRA) |
>92 |
>85 |
Features
1, Moulding: Cold isostatic pressing(CIP)
2, Sintering: GPSN/RSSN
3, High strength and good compactness
4, Low thermal expansion coefficient
5, Excellent thermal shock resistance
6, No wetting by molten aluminum and non-ferrous metal
7, Good corrosion resistance
Recommended Sizes
|
OD(mm) |
ID(mm) |
Length(mm) |
|
16 |
8 |
300-600 |
|
22 |
12 |
300-800 |
|
28 |
16 |
300-900 |
|
30 |
18 |
300-900 |
|
45 |
25 |
300-900 |
All goods are made based on customers'drawings.
