ATEQ F580 - 4.3. Test Type Selection

Chapter 3 – Start-up and settings
UM-18400E-U ATEQ F580 User manual Page 44/168
4.3. TEST TYPE SELECTION
Four types of test are available.
The PARAMETERS menu
gives access to four possible
types of test: leak test (LEAK
TEST), pressure test
(BLOCKAGE), desensitised
mode test (D. MODE) and an
operator test (OPERATOR);
see the following paragraph
for explanations.
Put the cursor in front of the
required test type and confirm
with the ENTER key.
PARAMETERS
TYPE
1
5
:
40
:
25
2
0
/
0
8
/2002
----------
LEAK TEST
BLOCKAGE
D MODE
OPERATOR
4.3.1. Leak test
The leak test is most suitable for measuring small leaks (pressure drop). The following
formula is used to convert a leak expressed in units of flow to a drop in pressure:
)(cm V x 0,0006
/min)(cm F
(Pa/s) P
3
3
=∆
F(cm
3
/min) = Leak flow
0.0006 = constant
V (cm
3
) = volume of the test part
∆P (Pa/s) = pressure drop
Example:
Part which has dP/dt = 50 Pa/s Part which has dP/dt = 1 Pa/s
Test
1 s
2 s
3 s
.
.
n s
Pa/s
50
50
50
.
.
50
Pa
50
100
150
.
.
nx50
Test
1 s
2 s
3 s
.
.
n s
Pa/s
1
1
1
.
.
1
Pa
1
2
3
.
.
n
The choice of working in Pa or in Pa/s depends on the application.
In all events, it must not be forgotten that the full scale of the sensor in Pa or Pa/s is
limited to 50 or 500 Pa depending on the instrument configuration.