Endress+Hauser NRF81 - Page 193

Tankside Monitor NRF81 Operating menu
Endress+Hauser 193
CTSh: Calculation of the wall temperature
A
T
P
T
V
T
D
T
W
T
A
A0028714
 52 Parameters for the CTSh calculation
A Gauge Reference Height (GRH)
T
W
Temperature of the wetted part of the tank shell
T
D
Temperature of the dry part of the tank shell
T
P
Product temperature
T
V
Vapor temperature (in the tank)
T
A
Ambient temperature (atmosphere surrounding the tank)
CTSh: Calculation of the wall temperature
Depending on the parameters Covered tank (→  196) and Stilling well (→  197),
the temperatures T
W
of the wetted and T
D
of the dry part of the tank wall are calculated as
follows:
Covered tank (→  196) Stilling well (→  197) T
W
T
D
Covered
Yes
1)
T
P
T
V
No (7/8) T
P
+ (1/8) T
A
(1/2) T
V
+ (1/2) T
A
Open top
Yes T
P
T
A
No (7/8) T
P
+ (1/8) T
A
T
A
1) This option is also valid for insulated tanks without a stilling welll. This is due to the temperature inside
and outside of the tank shell being the same due to the insulation of the tank.