Zaxis Isaac PD - Page 51

51
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
P
Pass Light — The Isaac’s green indicator with check mark. The pass light turns on
after the tester completes a test that remains within established parameters.
Pilot Air — Certain applications require the use of pneumatics that is pilot actuated.
A steady air supply is required to assist in the operation of these valves. Zaxis’ propri-
etary air valve requires 85-100psi to function correctly.
Prell — A higher pressure than test pressure programmed in the pre-pressure eld.
Pre-pressure settle time is time allowed to settle before continuing to ll timer.
Pressure — The relative force of a compressed air or gas. The Isaac is generally
congured to use psig, which is the force of compressed gas relative to barometric
pressure. Alternatively, mbar (millibar of 1/1000 bar), mmHg (millimeters of mercury),
inH2O (inches of water) or kPa (Kilo Pascal) may be selected.
Pressure Decay Test — Pressure decay testing is used to test products for leaks by
trapping pressure inside and then measuring pressure loss. The abbreviation PD is
often used in this guide to refer to pressure decay.
Pressure Regulator — The Isaac uses a precision pressure regulator that controls line
pressure. The pressure regulator is adjusted during setup to set test pressure.
Pressure Standard — A precision measuring instrument that can be connected to
Isaac as part of a pressure or ow calibration. The pressure standard must have the
required accuracy, stability, and repeatability to measure Isaac’s output. The pressure
standard must have current calibration documentation if the customer needs to prove
accuracy traceability.
Pressure Tolerance — The plus or minus allowable change in the test pressure. If
the pressure fails to achieve this amount during the Fill step, a “LO Pressure” error will
report. If the pressure exceeds this mark during the Fill step, a “HI Pressure “error will
report. If the test pressure falls below the mark during the Settle step, a “Gross Leak”
error will report.
Pressure Transducer — An electro-mechanical device (also called a sensor) that con-
verts pneumatic pressure into electrical signals. The Isaac’s pressure transducers are
rugged, accurate, repeatable, and have a very low internal volume.