TORAY UF
Instruction Manual
06-G-MB2-HFUG-B2315AN-220930
27 of 35
4. Basic Trans-Membrane Pressure Calculation
To calculate accurate Trans-Membrane Pressure (TMP), it is necessary to involve the height
difference of inlet and outlet pressure gauges (see Fig. 7).
Example calculation of TMP
TMP = (P
in
- H
in
) - (P
out
- H
out
)
= (70 - 10) - (20 - (- 25))
= 60 - 45
= 15 kPa
Note, the following formula may also be used:
TMP = P
in
- P
out
- total delta H
= 70 - 20 - (10 - (- 25)) = 15 kPa
Fig. 7. Basic TMP calculation
