EN
14522381.01 04/2022 EN/DE/FR/ES
WIKA additional operating instructions for diaphragm seal, model 990.45
8
Example of
Marking
Line
Pos.
Designation
1
1
Direction symbol and designation of the instrument side
1
2
Standard of process connection of the instrument side
1
3
Size of the process connection of the instrument side + nominal pressure rating
2
1
Direction symbol and designation of the process side
2
2
Standard of process connection of the process side
2
3
Size of the process connection of the process side + nominal pressure rating
3
1
Material data for lower body of diaphragm seal
3
2
Maximum permissible temperature TS
1)
3
3
Maximum allowable pressure PS
1)
3
4
Serial number
3
5
Date of manufacture (MM/YY)
1) per European pressure equipment directive
Example of
Abbreviation
Designation
UB
Upper body of diaphragm seal
LB
Lower body of diaphragm seal
MB
Diaphragm of diaphragm seal
For information on further markings, see operating instructions “Diaphragm seal systems”,
article number 9045830.
The serial numbers of the upper and lower bodies of the diaphragm seal match on initial
delivery and may only be mounted in the correct combination.
4. Transport, packaging and storage
4.1 Transport
Check the instrument for any damage that may have been caused by transport.
Obvious damage must be reported immediately.
3. Safety / 4. Transport, packaging and storage
