Operating Instructions

Sensor Offset (2.3.3.)
A constant offset that can be added to or subtracted from the sensor value
1)
to compensate for
a shifted sensor reference point. (For example, when adding a thicker gasket or reducing the
standoff/nozzle height.) The units are defined in Units (2.2.1.).
Values Range: -100 to 100 m. Default: 0.00 m
Related parameters Units (2.2.1.)
1)
The value produced by the echo processing which represents the distance from sensor
reference point to the target, see Sensor Mode (2.2.2.).
Rate (2.4.)
Response Rate (2.4.1.)
Note
Changing Response Rate resets Fill Rate per Minute (2.4.2.), Empty Rate per Minute (2.4.3.),
and Damping Filter (2.2.4.).
Sets the reaction speed of the device to measurement changes.
Response Rate (2.4.1.) Fill Rate per Minute
(2.4.2.)
Empty Rate per Mi‐
nute (2.4.3.)
Damping Filter (2.2.4.)
* Slow 0.1 m/min (0.32 ft/min) 10 s
Medium 1.0 m/min (3.28 ft/min) 10 s
Fast 10.0 m/min (32.8 ft/min) 0 s
Use a setting just faster than the maximum filling or emptying rate (whichever is faster).
Fill Rate per Minute (2.4.2.)
Defines the maximum rate at which the reported sensor value is allowed to decrease. Allows
you to adjust the SITRANS LR250 response to decreases in the actual material level. Fill Rate
is automatically updated whenever Response Rate is altered.
Options Range: 0 to 99999 m / min.
Response Rate (2.4.1.) Fill Rate per Minute (2.4.2.)
* Slow 0.1 m/min (0.32 ft/min)
Medium 1.0 m/min (3.28 ft/min)
Fast 10.0 m/min (32.8 ft/min)
Altered by: Response Rate (2.4.1.)
Related parameters Units (2.2.1.)
Enter a value slightly greater than the maximum vessel-filling rate, in units per minute.
Parameter reference
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 111