Appendix A
Electronic Regulator
The Sprint LC tester described in this Appendix can control pressure with
an automatic programmable air regulator. The electronic regulator
replaces the manual regulator and the adjustment knob for the manual air
regulator is removed from the rear panel of the Sprint LC. Test pressure is
set using the setup parameters menu and the front keypads. The electronic
regulator is used to establish test pressures in pressure decay and flow tests
and can be used to establish the ramp rate in burst tests.
Advantages of the Electronic Regulator:
¡ Establish a variety of test pressures. Different test pressures can
be assigned to each of the stored programs and then multiple
programs can be linked to form one continuous series of tests
each with a unique test pressure.
¡ Ramping pressures, for burst testing, can be established and
assigned to any of the stored programs.
¡ Operators simply select the test program and need not adjust
the test pressure.
Requirements of the Electronic Regulator:
¡ The incoming pressure must be kept at a consistent pressure to
keep the electronic regulator calibration accurate.
¡ Rather than being preset, the regulator starts at zero each time
and will seek to reach test pressure (a minimum of 2 seconds is
recommended).
¡ In a flow test, fill time must be used to allow the electronic
regulator to seek and reach test pressure.
Appendix 1
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