Program
Code Function Code Description Prod 1 Prod 2 Prod 3 Prod 4
AB06030 Rev. 0.6 5/96 37
500
Pressure Directory
501 Minimum Back Enter: Four (4) digits to select
Pressure Flow the minimum flow rate allowed
Rate Setting during back pressure operation in
whole units per minute. (e.g., 0100)
"0000" disables the alarm _____ _____ _____ _____
502 Differential Pressure Enter: Three (3) digits of differential
pressure in units of psia, bars, or
kg/cm
2
that is to be maintained above
the vapor pressure or back pressure
(e.g., 060). Unit selection is
made in code 541 of the Systems
Directory. ____ ____ ____ ____
503 Minimum Back Enter: Two (2) digits in seconds
Pressure Flow Rate to achieve a desired flow rate
Timer Setting (e.g., 20).
"00" disables this minimum
flow rate timer and the back
pressure reduction in code 504. ___ ___ ___ ___
504 BP Reduction Enter: Two (2) digits in % reduction of flow
rate for back pressure flow control and
AFO (e.g., 80, Range 50% - 90%)
___ ___ ___ ___
505 Low Pressure Alarm Enter: Four (4) digits indicating
the pressure reading that will
generate a low pressure alarm.
The range is from 0000 to 9999.
Pressure units are dependent
on entry made in code 541
of the Systems Directory.
An entry of 0000 will disable
this feature. _____ _____ _____ _____
506 High Pressure Alarm Enter: Four (4) digits indicating
the pressure reading that will
generate a high pressure alarm.
The range is from 0000 to 9999.
Pressure units are dependent
on entry made in code 541
of the Systems Directory.
An entry of 0000 will disable
this feature. _____ _____ _____ _____
507-539 Unassigned at Present
540 Protection of Program Enter: "0" for Weights and Measures Mode
Codes 580-589 "1" for Program Mode __ __ __ __
541 Compressibility Factor Enter: Five (5) digit compressibility factor
used in calculating the CPL
(e.g., 39600 entered
represents 0.000039600) _____________________ _______
542 Vapor Pressure Enter: "0" Straight Line Approximation
Calculation "1" GPA Table TP-15 __ __ __ __