Commissioning
6.2 Local commissioning
SITRANS Probe LR with mA/HART
Operating Instructions, 05/2019, A5E32337711-AC
35
6.2.11.2
P001: Operation
Select the measurement mode required for the application (P001: Operation)
To measure how full the vessel is, select Level: the reading can be returned as level or as
volume:
●
for a level reading, ensure P050 is set to 0: the reading returns the distance from process
empty level (Empty) to the current level
●
for a volume reading, select a vessel shape at P050, and set volume parameters P051 to
P055 as required
To measure how much space remains in the vessel, select Space:
●
Space returns a reading for the distance between current level and process full level
(Span)
To measure the distance from the reference point to the current level, select Distance. For
the reference point, see SITRANS Probe LR dimensions (Page 84).
①
Reference point
④
Empty
②
Span
⑤
Space
③
Level
⑥
Distance
Note
•
Setting P001 resets Span (P007), unless Span has previously been set to a different
value. Span is set to Empty distance minus 110% of Blanking, unless Operation is set to
distance measurement (P001=3). In this case, Span is set to the same value as Empty
(P006).
Default blanking distance is 0.3 m (1 ft). For more details, see Near blanking
(Page 87).
•
Changing P001 may reset Output Function (P201): this applies to HART only.
Parameter Values
Description
P001
1 *
Level returns material level referenced from Empty (process empty level). The
reading is returned in volumetric units if parameters P050 to P055 are set to
enable this.
2
Space returns material level referenced from Span (process full level).
3
Distance returns material level referenced from the reference point. For the
reference point of the standard configuration, see Near blanking (Page 87).