BTG Pulptec SBT-2400, Руководство пользователя

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7.2 - Flow Guide and Pipe Deflector Installation
M2041/5en SBT-2400 Appendix 61
©BTG 2006
7.2 Flow Guide and Pipe Deflector Installation
In some installations there is not possible to have a straight length of pipe up-
stream of the transmitter that is long enough, or there can be a spiral flow. A
flow guide must then be installed upstream of the transmitter.
In other applications there is an unavoidable risk that foreign objects, such as
fragments of knots, incompletely dissolved pulp lumps etc., could damage the
transmitter. To minimize the risk, a deflector should be installed upstream of
the transmitter.
A reversal of flow can also damage the transmitter. If a reverse flow is possi-
ble, the installation must be completed with a reverse flow deflector located
downstream of the transmitter.
NOTE!
Flow guides will act as deflectors and therefore it is not necessary to install
both. If flow guides are needed, it is only necessary to install the flow guides,
not any deflectors.
7.2.1 Pipe Deflector Installation
See Fig 7 where to place the deflector. The alternative A is included in a stan-
dard delivery but making a deflector like alternative B will work fine. For weld-
ing instructions, see section 3.3.2:
Pipe Deflector .
300 - 350 mm 300 - 350 mm
(12 - 14")
(12 - 14")
300 - 350 mm 300 - 350 mm
(12 - 14")
(12 - 14")
155 mm 155 mm
(6.1")
100 mm 100 mm
(4")
100 mm 100 mm
(4")
approx.
200 mm
200 mm
(8")
Fig 7 Pipe deflectors