Siemens SITRANS LUT400 - Current Output (2.5.)

SITRANS LUT400
176 Operating Instructions, 07/2019, A5E33329501-AC
9.2.5 Current Output (2.5.)
Note
Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly
stated.
9.2.5.1 Current Output Function (2.5.1.)
Menu number 2.5.1. visible on LUT420 (Level model).
OR
9.2.5.2 Current Output Function (2.5.2.)
Menu number 2.5.2. visible on LUT430 (Pump and Flow model), and LUT440 (OCM model).
Alters the mA output/measurement relationship.
Note
•
The various options have different reference points.
•
Use caution when changing Current Output Function while the device is connected to a
HART network. Current Output Function controls the primary value and the loop current
for the device.
Options
Reference point
Description
MANUAL
1
n/a
user can enter mA value for loop current.
* LEVEL Low calibration
point
measured as difference between the material level and
Low Calibration Point (2.2.1.) (Page 171) , defined in
Units
(2.1.1.) (Page 168).
SPACE High calibration
point
measured as difference between the material level and
High Calibration Point (2.2.2.) (Page 172), defined in Units
(2.1.1.) (Page 168).
DISTANCE Sensor reference
point
measured as difference between the material level and
sensor reference point, defined in Units (2.1.1.)
(Page 168).
VOLUME Low calibration
point
converted from Level, defined in Length of the cylindrical
section of a horizontal parabolic end vessel. See Vessel
Shape (2.6.1.) (Page 180) for an illustration.
HEAD
2
Zero Head measured as difference between the liquid level and Zero
Head, defined in Units (2.1.1.) (Page 168).
FLOW Zero Head converted from Head, defined in Flowrate Units (2.15.3.7.)
(Page 233).
1)
When Current Output Function is set to Manual, a power cycle will reset this parameter to
its previous value.
2)
Option available only on LUT430, LUT440.