Endress+Hauser NRF81 - Page 188

Operating menu Tankside Monitor NRF81
188 Endress+Hauser
"Tank calculation" submenu
Navigation  Setup → Advanced setup → Application → Tank calculation
"HyTD" submenu
Overview
Hydrostatic Tank Deformation can be used to compensate the vertical movement of the
Gauge Reference Height (GRH) due to bulging of the tank shell caused by the hydrostatic
pressure exerted by the liquid stored in the tank. The compensation is based on a linear
approximation obtained from manual hand dips at several levels distributed over the full
range of the tank.
A
B
C
D
A0028721
 50 Correction of the hydrostatic tank deformation (HyTD)
A "Distance" (level below L
0
→ "HyTD correction value" = 0)
B Gauge Reference Height (GRH)
C HyTD correction value
D "Distance" (level above L
0
→ "HyTD correction value" > 0)
This mode should not be used in conjunction with HTG as with HTG the level is not
measured relative to the gauge reference height.