SPRIANO SPRIANO Series, Operating Manual

Page: 8 / 48

OPERATING MANUAL
MN-SST50
ED-17-09
SPRIANO® TECHNOLOGIES
- www.spriano.it – spriano@terranova-instruments.com
a TERRANOVA® Srl brand
- www.terranova-instruments.com - VAT IT07848810151
Factory & Sales: Via Gramsci 1 – 26827 Terranova dei Passerini (LO) – Italy
Head Office: Via Rosso Medardo 16 – 20159 Milano – Italy Ph: +39 0377 919119 – Fax: +39 0377 855720
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3.3
M
ECHANICAL
I
NSTALLATION
The level Transmitters are designed in various mounting forms ( Figure 29 ), depending upon the
position of displacer in respect of vessel (externally mounted or internally mounted) and
depending upon the position of connections (top and bottom
TF , top and side TL , side and
bottom LF , side and side LL , top vessel SI , side vessel LI ).
The Transmitter should be located, if possible, at some easily accessible, well lighted place on
the vessel, in order to allow putting in operations and maintenance work. Location should also
be such that ambient temperature at the Transmitter enclosure be not excessive (see
MARKING).
Where required for the cage style, mechanical stops are applied to prevent from damage during
transport and handling.
I
NFORMATION
!
-
Plant overpressure / overtemperature: observe rating plate
-
Installation on seismic areas: inform technical department
-
In case of unstable fluids: inform technical department
-
In case of damages: inform technical department
-
Inspection frequency: consideration should be given to applicable national
legislation.
3.4
E
XTERNAL
M
OUNTING
D
ISPLACERS
Install the Transmitter in a vertical position of the side of the tank or vessel so that the
“MEDIUM LEVEL” (mid-range) mark is located at the normal level (
Figure 3 ).
The equalizing lines should be the same size as the chamber connections. Install a block valve
normally operated in each line.
On bottom connected Transmitter (type TF and LF), which lack of bottom drain plugs, the use of
a drain connection is recommended. 1” at least nominal size, to be mounted coaxially with the
bottom flanged connection.
M
ANDATORY
!
The process connection must be realized in such a way that guarantees the hold at
the maximum working pressure and temperature.
W
ARNING
!
-
Do not overcome the maximum pressure and temperatures indicated in the
technical data sheet of the selected model.
-
When the device is connected to the process it can be submitted to high
pressures and temperatures. To avoid accidents subsequent to sudden discharge
of pressure and/or to contact with dangerous or flammable fluids it is necessary
to take the maximum attention when the Transmitter is taken off, heated or
repaired, verifying that it is isolated from the process and is not submitted to
pressure and/or temperature.