Zaxis Isaac PD - Page 49

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Flow Test — A ow test involves pushing air through a product at a set pressure and
measuring the resultant ow with a ow sensor. Flow testing can be used in two ways:
1. Flow Leak Detection: Product is lled with air at a set pressure and then sealed
from atmosphere as in a pressure decay test. Any ow above zero indicates a
leak.
2. Flow Measurement: Air is pushed through a product at a set pressure and al-
lowed to ow to atmosphere. A ow sensor measures the volume of air moving
through the unit under test. The Isaac’s digital readout shows ow rate in cus-
tomer selectable units.
Flow Transducer — A device that converts gas ow into electrical signals. The type
of transducer used in the Isaac is a mass ow transducer, which is both accurate and
immune to room temperature uctuations.
Foot Switch — An optional switch that connects to the back of the Isaac that the
operator can use to start a test cycle. This switch has the same function as the START
button on the front of the Isaac.
G
Gage Pressure — A force referenced to barometric pressure. The Isaac uses a gage
regulator to keep the pressure constant as barometric pressure changes.
Gross Leak — A leak that causes a drop below the test pressure minus the pressure
tolerance in the settle step.
I
Interface — Communication between the Isaac and a peripheral device such as a
computer or printer. The Isaac PD has three interfaces: an Ethernet port, discrete I/O
points, and a footswitch connector.
I/O (Input/Output) — Connections the Isaac uses to communicate with computers
or Programmable Logic Controllers (PLCs). The Isaac I/O includes inputs to change and
start programs and output pass/fail status.