VEGA VEGAFLEX 86 4 … 20 mA_HART - four-wire Coax probe - Manual (Page 18)

18
4 Mounting
VEGAFLEX 86 • 4 … 20 mA/HART - four-wire
42285-EN-130314
The prerequisite is constant temperature and pressure in the vessel.
Automatic correction via the reference distance
The VEGAFLEX 86 can be equipped optionally with a running time
correction via reference distance. The probe can carry out an auto-
matic running time correction with it.
The reference point must hence not be overfilled. The upper dead
band is hence 450 mm (17.7 in).
2
6
7
3
4
5
1
Fig. 9: Measuring ranges - VEGAFLEX 86 with steam compensation
1 Reference plane
2 Probe length L
3 Measuring range
4 Upper dead band
5 Lower dead band
6 Additional upper dead band by steam compensation
7 Reference measurement distance to steam compensation