Additional Information For Flow Switch Version Vh; Material Specifications Of Wetted Components - SIKA VH Série Notice D'utilisation

VH... / VK...
If the medium which is to be monitored is very hot, the flow switches or their connection
fittings will also become very hot. In this case, neither touch the flow switch nor place any
heat-sensitive objects in its vicinity.
Protect the flow switch against external magnetic fields in the immediate vicinity, since
these can impair device functioning.
The technical data of special versions (customised versions) can deviate from the details
in these instructions. Please observe the details on the type plate.
Caution: Danger of death due to high voltages!
Always de-energize the system before connecting the connector cable.
It is prohibited to remove or make type plates or any other information attached to the
equipment indecipherable, otherwise all warranties and the responsibility of the manu-
facturer no longer apply.
2.3 Additional information for flow switch version VH...X
The flow switch should only come into contact with media with a minimum ignition tem-
perature of >135 °C and ignition energy of >60μJ.
When installing and before starting-up, it is to be guaranteed that the mechanical process
connections are technically tight.
Always consider the impermeability of the screwing elements for the zone allocation. De-
pending on the operating conditions, it may be necessary to regularly check the imper-
meability of the screwing elements.
3

Material specifications of wetted components

Type VH
VH
Body
Paddle system
Round head rivet
Bushings
(NORYL GFN3)
Axle
Pipe section *1 2.0402 (VH...1)
Threaded adapter *2
Screw-in insert *3
Seal
V Seal -------------
Magnet Hard ferrite
*1) only for flow switch with pipe section
*2) only for flow switch for direct installation, soldering or welding connection
*3) only for flow switch for direct installation, screw connection
*4) Type VHS06M - P ... (Trimmable paddle) has a stainless steel sleeve (1.4571)
Technical changes reserved
M 1 1 1 VH M 1 1
- - - - - - - - - -- - - - - -
M 1 1 C
- - - - - - - -
2.0401 2.0401
2.0401 2.0401
2.0321 2.0321
PPO 1.4571
1.4571 1.4571
2.0402
Copper
(VH...C)
2.0402 2.0402
2.0401 2.0401
NBR NBR
-------------
Hard ferrite
Material specifications of wetted components
1X VH M 3 -3 3 VH M
- - - - - - - - - -
1.4571 1.4571
1.4571 1.4571
1.4303 1.4303
PVDF 1.4571
1.4571 1.4571
1.4571 1.4571
1.4571 1.4571
1.4571 1.4571
NBR NBR
------------- -------------
Hard ferrite Hard ferrite
3 3 3X VH M P 1 1 VK
- - - - - - - - - - - -
VH M P 1 C VK
- - - - - - - -
VK
2.0401
(NORYL GFN3)
PPO *4
(NORYL GFN3) (NORYL GFN3)
----------
PPO
(NORYL GFN3) (NORYL GFN3)
1.4571
2.0402 (VH...1) 2.0402 (VK...1)
Copper(VH...C) Copper (VK...C)
2.0402
2.0401
NBR
EPDM
Hard ferrite
M P P 1
- - - - - - - -
M P P C
- - - - - - - -
M P P K
- - - - - - - -
PPO
PPO *4
----------
PPO
1.4571 / PPO
PVC (VK...K)
1.4571
1.4571
NBR
EPDM / PPO
Hard ferrite
- 27 -