Electronic Regulator and Flow Testing
During the product’s fill time, the electronic regulator seeks to test
pressure. At the start of test time, the regulator stops seeking and holds the
test pressure steady, allowing a steady flow reading to be taken. If a flow
test is run without sufficient fill time, the regulator may not reach the
correct test pressure and a Pressure Error (P ERR) will result.
With a manual regulator the regulators output will change depending on
the flow rate. As the flow increases the manual regulator will reach a point
when it can not keep up with the flow and the output pressure will begin to
drop.
With the electronic regulator Sprint LC will read the pressure and
automatically adjust the output to reach the set test pressure.
Setting Test Pressure and Test Type
When the test type is changed, the test pressure is checked to be sure it is
not above the maximum pressure allowed for the selected test type. If it is
above the maximum, it is then set to the maximum of the test type
selected.
Vacuum (negative pressure) = 15 psig
Low Flow (ranges from 10 to 1000 sccm) = 15 psig
High Flow (ranges from 5000 to 20000 sccm) = 60 psig
Vacuum Range
U
SE
R
The actual vacuum range that can be achieved is
dependant on the atmospheric pressure. The standard
venturi can reach vacuum levels down to 12.6 psig.
T
I
P
Appendix 5
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