Valmet SMART-PULP Operating And Installation Instructions page 4

SMART-PULP
FLOW
D
s
DN P
max. DxS
ISO bar **)
100 18
114.3x2
125 16 139.7x2
12
150 168.3x2
200 16
219.1x3
250 10 273.0x3
300 10
323.9x3
350 10
355.6x3
10
400 406.4x4
500 8 508.0x4
600 6 609.6x4
Low consistencies (SMART-PULP UL)
Low consistencies (see Section 7.1, Sensor Types)
are measured with sensor option UL. To measure
extremely low consistencies as accurately as
possible we recommend a bypass installation that
will provide the required flow velocity and stabilized
flow. You should be able to limit the flow velocity
between 0.1 and 1 m/s. This installation is illustrated
in Figure 1.1.2e.
The bypass line is connected to the process line with
20 mm pipes for max. 2% Cs consistency, and with
30 mm pipes for max. 3% Cs consistency. At higher
than 3% Cs consistencies you use 40 mm pipe.
Deflector must not be used with the UL sensor.
NOTE! Due to the risk of plugging, this installation is
not suitable for unscreened pulp.
High consistencies (SMART-PULP HL)
SMART-PULP HL, the transmitter for high
consistencies, is installed on the small-diameter pipe
section following the stock pump. This will ensure
sufficient flow velocity. See Figure 1.1.2d. This pipe
section usually includes other devices, such as a
flowmeter and control valve. Recommended
installation order is shown in Fig. 1.1.2d.
To protect the sensor, the deflector blade supplied
with the transmitter must always be installed in high-
consistency applications where standard process
coupling is used. In digester blow line installations
you have to use the blow coupling shown in Figure
1.1.3d. In that case you will not need a separate
deflector in front of the sensor.
Smart Consistency Transmitter
DN
2xDN
155
300
α α α α α / β β β β β /
L o o
*)
mm
1000 90 180
2
1125 90 180
2
1250 45 90
4
1500 45 90
4
1750 45 90
4
2000 30 60
6
2250 30 60
6
2500 30 60
6
3000 22.5 45
8
3500 22.5 45
8
L
500
155
300
90 O ±0.5
95
Weight
kg
9
12
15
32
46
68
*) Number of deflector plates
82
**) Other dimensions available on order
124
180
250
Figure 1.1.2b Installation tube assembly
Figure 1.1.2c
Profile tape to shape the coupling before welding
Figure 1.1.2d Installation of SMART-PULP HL
(4 to 16% consistency range) after MC pump
4
BCs160VA
Nov. 15, 1997
α α
β
β
β
1/3 x DN
or