Commissioning
SITRANS FPS200
Operating Instructions, 08/2019, A5E46744245-AB
19
6.1.2
Shut off valves (if included in the scope of supply)
Use
Shut off valves are used for initial shutoff of the measuring point. For high-pressure and high-temperature
applications double initial shutoff may be recommended or prescribed depending on national regulations.
Function
Initial shutoff serves separation of the measuring system from the measuring line close to the process in case of a
leak or maintenance work at the differential pressure lines.
Installation and commissioning
After completion of installation, the shut off valves must be closed. In the scope of commissioning, first carefully
open the shut off valves and check the entire measuring system for leaks.
6.1.3
Valve block (if included in the scope of supply)
Versions
3-fold valve block
5-fold valve block
(Chart)
(Chart)
Valve Use
1 and 2 Separation of the differential pressure transmitter from the process
3
Pressure balancing valve (zero-point setting of the differential pressure transmitter)
4, 5
Venting (for liquids and steam)
Drainage (for gases)
Complete emptying of the differential pressure lines (e.g. for maintenance work)
Use
The valve block separates the differential pressure transmitter from the process or is used for regular zero-point
setting of the differential pressure transmitter.
Function
If the differential pressure transmitter must be removed from the measuring point (e.g. for replacement or repair)
closing of all three valves permits separating the transmitter completely from the process and removing it.