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Section 4Edition 3
Rev G
4-28
4. POLYNOMIAL
INPUT 1: X PROMPT: DVxx INPUT X
INPUT 2: A PROMPT: DVxx INPUT A
INPUT 3: B PROMPT: DVxx INPUT B
INPUT 4: C PROMPT: DVxx INPUT C
INPUT 5: D PROMPT: DVxx INPUT D
ACTUATOR: n/a
RESET: n/a
OUTPUT: = A*X**3 + B*X**2 + C*X + D
5. LINEAR MASS FLOW - AGA 3 LINEAER GAS FLOW
INPUT 1: F PROMPT: DVxx RAW FLOW
INPUT 2: PRES PROMPT: DVxx STATIC PRES ABS
INPUT 3: TEMPF PROMPT: DVxx FLOW TEMP°F
INPUT 4: COMP PROMPT: DVxx COMP. CORRECT.
INPUT 5: C PROMPT: DVxx SCALING CONST.
ACTUATOR: n/a
RESET: n/a
OUTPUT: =C*F*SQRT (PRES/(TEMPR*COMP))
where: TMPR = TEMPF + 459.67
If INPUT 1 is "NOT USED", then F=1
If INPUT 2 is "NOT USED", then PRES=1
If INPUT 3 is "NOT USED", then TEMPR=1 (not TEMPF)
If INPUT 4 is "NOT USED", then COMP=1
If INPUT 5 is "NOT USED", then C=1
NOTES: F - Raw Linear Fow Input
PRES - Static Pressure - must be ABSOLUTE
TEMPF - Flow Temperature - must be degrees F
COMP - Compressibility Correction
C - Scaling Constant
This function converts TEMP from degrees F to degrees R in the equation.
6. DP MASS FLOW - AGA 3 DP GAS FLOW
INPUT 1: DP PROMPT: DVxx DIFFERENT. PRES
INPUT 2: PRES PROMPT: DVxx STATIC PRES ABS
INPUT 3: TEMPF PROMPT: DVxx FLOW TEMP °F
INPUT 4: COMP PROMPT: DVxx COMP. CORRECT.
INPUT 5: C PROMPT: DVxx SCALING CONST.
ACTUATOR: n/a
RESET: n/a
OUTPUT: = C*SQRT ((DP*PRES) / (TEMPR*COMP))
where TEMPR = TEMPF + 459.67)
If INPUT 1 is "NOT USED", then DP=1
If INPUT 2 is "NOT USED", then PRES=1
If INPUT 3 is "NOT USED", then TEMPR=1 (not TEMPF)
If INPUT 4 is "NOT USED", then COMP=1
If INPUT 5 is "NOT USED", then C=1