EB 9520 EN
9
Design and principle of operation
2.3
2.2
2.1
3.1
3.2
A1
A2
1.1
1.3
1.4
1.9
1.8
1.2
1.7
1.6
1.5
_
+
Differential pressure cell
1.1 dp cell
1.2 High-pressure chamber
1.3 Low-pressure chamber
1.4 Range springs
1.5 Measuring diaphragm
1.6 Diaphragm plates
1.7 Diaphragm stem
1.8 Lever
1.9 Flexible disk
Housing of indicating unit
2.1 Gear segment
2.2 Pointer mechanism
2.3 Dial plate
Limit contact (alarm contact)
3.1 Metal tag
3.2 Proximity switches for alarm contacts A1
and A2
Fig. 1:
Functional diagram: version with two alarm contacts
