Uson SPRINT LC - Low Pressure in a Flow Test; Pressure Error in a Flow Test

Page 114
Pressure Error in a Flow Test
Pressure error is used to make sure pressure is at the target level to
perform a flow test. This is necessary because flow rate changes as
pressure changes. Pressure error in a flow test functions much like
pressure error in a pressure decay test except pressure error is checked at
the end of the test phase. Figure 53.
Pressure error is set by entering one pressure number. Sprint LC sets the
positive and negative pressure error around the nominal test pressure.
FIGURE 54
If air pressure at the end of test time is
below the minimum pressure error
value, Sprint LC stops the test. If dump
is active, Sprint LC vents the air to
atmosphere (Figure 54). In this case,
Sprint LC displays P ERR in the status
box on the run display.
.0 P ERR
Test Time Status
PROGRAM 1
Press. Tested Reject
9
3 psig 1 1
sccm
Test
Zero
T
IME
PRESSURE
T
est Pressure
(- P ERR)
(+ P ERR)
Test Fails with “P-ERR” if the
pressure does not reach the
minimum Pressure set
p
oint.
Low Pressure in a Flow Test