Siemens Sitrans Probe LR Operating Instructions Manual page 66

P800 Near Blanking
Defines the distance from the reference point to be ignored by the transmitter/receiver.
Values
Related parameters
To extend the blanking beyond the minimum default, enter a value in units.
P801 Range Extension
Maximum range extension depends on the setting for P006 (Empty).
Note:
Allows the material level to drop below Empty (process empty level), without generating
an LOE state.
Values
Related Parameters
Use this feature if the surface monitored can drop below Empty level (P006) in normal
operation. The value for P801 is added to Empty, and the sum can be greater than the
range of the antenna. Range Extension can be increased (in Units or percent of Span) to a
point where Empty plus Range Extension is greater than the distance from the flange
face to the furthest surface to be monitored. The distance below empty is not blanked.
• Enter the value as a percentage of P006.
• For vessels with conical or parabolic bottoms, increase the value for P801 to ensure
that an empty vessel reads Empty.
1.
For more details, see
Page 60 SITRANS Probe LR – INSTRUCTION MANUAL
1
Range
Default
P006 Empty
P007 Span
P838 Auto False-Echo Suppression Distance
Range
Default
P006 Empty
P007 Span
Near Blanking
on page 93.
0.00 to 20 (m: selected in P005)
0.30 m (plus the shield length)
0 to 1000%
5.000 (% of Span)
7ML19985HR02