Tvt Setup (2.12.3.) - Siemens SITRANS LUT400 Operating Instructions Manual

Reform Echo (2.12.2.3.)
Smooth jagged peaks in the echo profile.
Values
one interval = span of 24.5 micro seconds
1)
Use this feature when monitoring solids if the reported level fluctuates slightly though the
monitored surface is still. Enter the amount (in ms) of Echo Profile smoothing required. When
a value is keyed in, the nearest acceptable value is entered.
Narrow Echo Filter (2.12.2.4.)
Filters out echoes of a specific width.
Values
one interval = span of 24.5 micro seconds
1)
Use this for transducer acoustic beam interference (e.g. ladder rungs). Enter the width of
false echoes (in groups of 25 ms), to be removed from the Echo Profile. [For example, select
value of 3 to remove 75 ms (3 x 25 ms) of false echoes from the profile.]
When a value is keyed in, the nearest acceptable value is entered.
Submergence Detection (2.12.2.5.)
Enables/disables submergence detection.
Values
(Submergence Detection Shield must first be installed on transducer.) When this parameter
is enabled and the transducer becomes submerged:
● fault code 26 is displayed (see General Fault Codes (Page 269)),
● mA output immediately advances to Minimum mA Limit (2.5.5.) (Page 178) or Maximum
mA Limit (2.5.6.) (Page 179), as defined by the application,
● DISTANCE is set to zero (corresponding to a high level),
● pumps and alarms operate normally (according to level), therefore they remain ON (or
activate if not already ON).
The submergence condition remains in effect until the transducer is no longer submerged. A
valid echo must then be detected before the LOE Timer expires or the device will enter fail-
safe condition (see Fail-Safe (2.4.) (Page 175)).
9.2.12.3

TVT Setup (2.12.3.)

Note
Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly
stated.
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
Range: 0 to 50 intervals
Default: 0
Range: 0 to 14 intervals
Default: 2
*
(greater = wider)
1
(greater = wider)
1
Enabled
Disabled
221