ES749 Flow Computer
61
The DP-Factor (K
DP
) can be entered manually or the ow computer
can compute it for you. The information necessary for this calculation
can be found on the sizing sheet from a owmeter sizing program.
Note:
The following data must be entered before the ow computer can
compute the DP-Factor.
1. Flow equation see "SYSTEM PARAMETER"
2. Fluid Data see "FLUID DATA"
3. Beta see "FLOW INPUT"
4. Meter expansion coef. ref see "FLOW INPUT"
5. STP Ref. temperature*, pressure see "OTHER INPUT"
7. Inlet Pipe Bore see "FLOW INPUT"
8. Calibration Temp. see "OTHER INPUT"
* only for gas ow equations.
Entries:
CHANGE FACTOR? NO
CHANGE FACTOR? YES
If "YES" the ow computer will prompt you further:
COMPUTE FACTOR? NO
COMPUTE FACTOR? YES
If "NO": Enter DP FACTOR
If "YES": You will be prompted for the following:
ENTER DELTA P
ENTER FLOWRATE
ENTER DENSITY
ENTER TEMPERATURE
ENTER INLET PRESSURE
ENTER ISENTROPIC EXP
DP FACTOR
(Continued)
6.8
FLOW INPUT
(Continued)
FLOW INPUT
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