They are used to provide electrical insulation to the couple which is used for sensing the temperature inside the furnace. These are single, twin , Four hole bore . These are generally used in small lengths of 25mm. However longer lengths are sometime preferred in critical applications
Double rond bore ceramic beads
ID |
2 |
3 |
4 |
6 |
7 |
9 |
1.2 |
1.2 |
1.5 |
2 |
2 |
OD |
5 |
7 |
9 |
11 |
13 |
15 |
5 |
5 |
7 |
8 |
9 |
Length |
5 |
7 |
9 |
11 |
13 |
15 |
10 |
35 |
10 |
25 |
50 |
Oval double bore ceramic beads
Dia of bore |
2.5 |
3.5 |
3.5 |
4 |
4 |
Long dia. |
9 |
10 |
10 |
13 |
13 |
Oval dia. |
7 |
8 |
8 |
10 |
10 |
Length |
25 |
20 |
20 |
25 |
25 |