OPERATING MANUAL
MN-SST70
ED-19-01
SPRIANO® TECHNOLOGIES
- www.spriano.it – [email protected]
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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4
OPERATIONS
Each transmitter is calibrated in factory and has on the nameplate the configuration data. If not
differently stated in the purchase order the transmitter is configured as follow:
Upper Range Value
(Heavier liquid Density): refer to the data sheet of unit
Lower Range Value
(Lighter liquid Density)
:
refer to the data sheet of unit
Damping
0 sec.
According to the configuration parameter set by the customer three types of measurement are
available: level, interface and density.
4.1
M
EASURE
O
F
L
EVEL
It will be measured the Level of the process liquid referred to the mounted displacer.
To obtain the measurement of the level of the liquid contained in the tank:
PV
unit should be selected on m, mm, cm, inches;
LRV
: it is referred to the level value which gives 4 mA output current;
URV
: it is referred to the level value which gives 20 mA output current;
PV
will be the measurement of the level of the fluid on the displacer in engineering
units showing the level on the displacer (mm, cm, m or inch).
It is measured from the position of the
processs level referred to the mounted
displacer.
To obtain the liquid level measurement in
the tank, the density of the process fluid
must be set in HEAVIER SG, while the
LIGHTER SG value must be set to the
value of the vapors (usually zero).
PV is the liquid level measurement reached
by the liquid on the displacer, expressed as
a percentage (%) of the displacer’s length:
this value is represented also in the
currently selected engineering unit measure
(mm, cm, m or inches).
M
ANDATORY
!
To have this measurement available the displacer MUST NOT necessarily be
completely inserted into the fluid.
LIGHTER SG must be set to 0.
