22
48-640 E3 Modulevel
®
Displacer Level Transmitter - F
OUNDATION
fieldbus
™
4.3.3 E3 Modulevel
®
Configuration Parameters
The following parameters within the MODULEVEL
Transducer Block are required to configure each
E3 MODULEVEL.
LEVEL_UNITS:
Select the units in which level parameters
are displayed (cm, in, feet, meters). (
➃
in figure 14)
PROCESS_SG:
Enter the specific gravity of the process
liquid at operating conditions. (
¿
in figures 14 & 15)
PROCESS_TEMPERATURE:
Enter the process operating
temperature. (
¡
in figures 14 & 15)
LEVEL_OFFSET:
Enter the desired level output at the zero
reference (bottom of displacer or centerline of bottom-side
process connection). (
➂
in figures 14 & 15)
4.3.4 offset description
The parameter referred to as LEVEL_OFFSET in the
Transducer Block is the desired level reading when the liquid
is at the zero reference point of the E3 MODULEVEL.
On the top mounted models E3A and E3B, the zero refer-
ence is the bottom of the displacer (not including the hook).
On a side-bottom mounted models E3C and E3D, it is the
length of the level range below the centerline of the upper-
side process connection.
On side-side mounted models E3E and E3F, the zero refer-
ence is the centerline of the bottom-side process connection.
Unit is shipped from factory with Level Offset = 0.
Example:
Application of an external cage model E3E
with a 48" level range is mounted with the centerline of
the bottom-side process connection 12" from the bottom
of the vessel. 0% point shall be at the bottom of the ves-
sel and 100% at the length of the level range above the
bottom of the vessel. Level Offset = 12" must be entered
into the E3 menu. See Figure 14.
4.4
User-Calibration Parameters
4.4.1 user Calibration Procedure
One of the main advantages of the E3 MODULEVEL
transmitter is that the device does not need to be calibrated
in the field. Every E3 MODULEVEL transmitter is shipped
from the factory precisely calibrated, requiring only config-
uration by the user in the field.
On the other hand, part of the advantage of F
OUNDATION
fieldbus
™
is to provide the ability to monitor changes and
adjustments to a transmitter. For minor calibration adjust-
ments to the measured value, trim parameters are available.
Liquid
Level
➂
In, cm, m, or ft.
➃
Level Offset
Process S.G.
Operating
Temp.
➀
➁
Figure 14
Chamber type installation
Side-Side Process Connections
Liquid
Level
Displacer
➂
Level Offset
➀
Process
S.G.
➁
Operating
Temp.
Figure 15
top Mount installation
