Fukuda FL-601 Series, Руководство по эксплуатации

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PRINCIPLE
Fitting Testing
By selecting Fitting Set on the FL-601, you can elect to use previously recorded constant numbers.
The recorded constants (formula 1) are substituted, becoming the fixed constant value. By doing
this, the level (fitting level) of the approximation calculations during the standard testing
procedure can be changed.
Select the Fitting Level through the FittingSet (Setting Item Fitting Set)
The following 5 sets are available under Fitting Set.
FittingSet 0
→ ｃ
Constant number fixed fitting
FittingSet 1
→ ｃ、ｂ
Constant number fixed fitting
FittingSet 2
→ ｃ、ｂ、ａ
Constant number fixed fitting
FittingSet 3
→
Recurring straight line calculation
FittingSet 4
→
No Fixed constant number fitting (Free Fitting)
Configure the Fitting Level by selecting Fitting Set 0~2 and 4.
FittingSet 3 can be tested using the stable domain or the differential pressure comparison
methods.
(1)
ｃ
Constant number fixed fitting
（
FittingSet0
）
Fitting testing (Testing according to the F Detect Time setting) will only record the constant c.
With standard testing, the recorded constant c is given a fixed value through approximation and
is modified later. The constants a and b are approximated, where a is used to calculate the leak
rate. The constant c is mostly dependent on the material quality of the work.
(2)
ｃ、ｂ
Constant number fixed fitting (FittingSet1
）
Constants c and b are recorded through fitting testing.
With standard testing, the recorded c and b constant numbers are given a fixed value through
approximation and are later substituted. The constant a is calculated using approximation.
The leak rate is calculated using the constant a.
The constant b is determined using ambient and work temperatures.
(3)
ｃ、ｂ、ａ
constant number fixed fitting (FittingSet2)
The constants c, b and a are determined through fitting testing.
The recorded c, b and a constant numbers are given an approximate fixed value during Standard
Testing , and are later substituted.
The leak rate (a constant number,) is calculated using standard testing by calculating the
difference between the actual data and the approximated data.
(4) Recurring straight line calculation
（
FittingSet3
）
Fitting testing is not available
（
FITTING key not available
）
Using standard testing, the leak rate is calculated from the recurring straight line slope of the
differential pressure data which is observed during the detection process.
(5) Free Fitting (FittingSet4)
Does not record any constants.
Uses the same calculation as the fitting testing and the standard testing methods.
The only difference between the fitting testing and standard testing is the set time (difference
between F Detect Set Time and Detect Set Time) during the detection process.
Ge
nera
ted
di
ff
eren
ti
al
press
u
re
Detection time
Master data
Unstable zone
Environmental
Leak
Stable zone
Differential pressure
gener ated by leak only
Test data
Actual leak rate
Testing data
–
master data = actual leak
t