Zaxis Isaac PD User manual

A User’s Guide
Ver. 1.00
Isaac
Pressure Decay Leak Tester
PD

PD
A User’s Guide
Ver. 1.00
Isaac
Pressure Decay Leak Tester
WEBSITE:
https://zaxisinc.com
EMAIL:
[email protected]
PHONE:
801.264.1000
HEADQUARTERS:
2442 South 2570 West
West Valley City, UT 84119
*Fixture Not Included - (Example of use)
*Wall or stand mounted

3
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
For Your Safety.
Install all equipment according to local safety codes.
Additional guidelines when working with the Isaac PD Pressure Decay Leak Tester:
»Always wear eye protection when working with compressed gas.
»Beware of possible hazardous voltages present inside the enclosure.
»Do not attempt any maintenance procedure discussed in this guide until
proper understanding of the tasks involved has been attained.
WARNING! Always disconnect power before removing cover
or fuse holder.
CAUTION! Equipment requires a clean-dry air supply. Failure
to comply may void warranty.

4
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
THREE YEAR LIMITED WARRANTY
Zaxis, Inc. Limited Warranty
ZAXIS INC. products are manufactured to a very high standard, however when
located in physically hostile environments or when operated under non-specication
voltage or pressure conditions, warranty may be voided. Please refer to your user
manual for more detailed information.
ZAXIS INC., therefore, warrants only as follows: Supply clean dry air only to the unit.
Each unit is identied by serial number in a permanent record of the company. If at
any time with-in three years after any ZAXIS INC. product has been shipped to a
customer (user), it fails to perform according to ZAXIS INC. literature, the product,
with written explanation of the problem, may be returned, freight prepaid, to ZAXIS
INC. for examination, repair or replacement at ZAXIS INC. expense (labor and
material). All such returns must have prior ZAXIS INC. customer service authorization
before returning. If, upon examination, ZAXIS INC. determines that abusive
practices, non-ltered and dried air or destructive environment of operation or a
combination of these factors is responsible for improper performance of the product,
all labor and materials costs involved shall be at the expense of the customer.
ZAXIS INC. is not liable for special, indirect or consequential damages that may result
from use, failure or malfunction of the product and any recovery against ZAXIS INC.
may not be greater than the purchase price paid for the product.
No person is authorized to change the terms of this warranty.

5
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Introduction
The Isaac PD Leak Tester is the latest product from Zaxis designed to meet today’s
quality assurances demands.
The compact size of the Isaac PD makes it easy to use in a variety of testing situations.
By reducing the internal and connection volumes, the test sensitivity will increase and
test times can be reduced. This small internal volume, combined with integrated sensors
and a 24bit analog to digital convertor, allows Zaxis to offer a leak tester with the
highest sensitivity on the market.
This guide covers the standard Isaac PD Leak Testers. All the current functions and fea-
tures are found in this guide. Your tester could differ in installed features.
Safety and Emissions
Operating Environment Conditions:
Indoor Use Only
Operating Temperature Range: 5-40° C
Maximum relative humidity: 80%
Main supply voltage: 120 V ~ 60 Hz ± 10%, 2A
Or 230 V ~ 60 Hz +/- 10%, 1A
Altitude: up to 2000 meters
Supply Air Pressure: 8.3 bar max. (unless otherwise specied)
◊ Supply air must be clean and dry.
◊ (10-micron ltration minimum, 5-micron recommended)

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Table of Contents
1. Front Panel
2. Bottom Panel
3. Control Screen
3.1) Data Input
3.1) Run Mode Screen
4. Conguration
4.1) Pressure
4.2) Fixture
4.3) Settings
4.4) Units
4.5) Calibrate
5. Options
5.1) Touchscreen Calibration
5.2) Clock
5.3) I/O Setup
5.4) Data Logging
5.5) Lock Tester
5.6) Change Pin
5.7) Ethernet Settings
6. Reference
6.1) Test Tooling and Fixtures
6.2) Engineering Data
6.3) Physical Laws
6.4) Glossary
7. Maintenance/Troubleshooting
7.1) Internal Leaks
7.2) Valve Cleaning
7.3) Filter
7.4) Fuse
8. Mount Installation

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
1Front Panel.
1. Touch Screen Interface (TSi) — The liquid crystal touch screen
display is the primary control of the leak tester.
2. Start Button — Push to Start. Push again during test to Abort.
3. USB Port — Port for USB storage media, such as a ash drive or
portable hard drive.
1
23
Fig. 1. Front Panel of the Isaac PD.

8
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
2Bottom Panel.
1. Air Supply — (air or other test gas) Con-
nection is 1/8”-27 F NPT (Similar to R1/8
BSPT British Standard Pipe Thread) Sup-
ply gas must be clean and dry.
2. External Clamp — This space is used
for Clamping (pneumatic outputs) or I/O
connection (shown)
3. Ethernet COnnector — ASCII commu-
nication, data output and command string
input.
4. M12 — Femail I/O connector.
5. Test Port — This component includes the
power cord socket, on/off switch, and the
Fig. 2. Bottom Panel of the Isaac PD.
fuse holder. Power entry is capable of a
range of 109-255~VAC. 2A Fuse (Service
Instructions)
6. Power Entry Module — This compo-
nent includes the power cord socket, on/
off switch, and the fuse holder. Pow-
er entry is capable of a range of 109-
255~VAC. 2A Fuse (Service Instructions)
7. Leak Test Port — supply positive pres-
sure or vacuum for a variety of leak and
ow test.
1
2
3
4
5
6
7

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
3Control Screens.
Run Mode — Press this button to change to the run mode to begin testing.
Fig. 3. About Screen for the Isaac PD.
Program — Contains three sub-menus (Pressure, Fixture, and Settings) that
control the parameters of the test.
Units — Engineering units and the displayed sensor resolution.
Calibrate — Calibration settings.
Options — Contains eight user options (Touchscreen Calibration, Clock, I/O
Setup, Data Logging, Change PIN, Serial Port, Ethernet Settings).
About — Lists the rmware revision level, serial number, and contact info for
Zaxis. (see Fig 3.)
Prog
Units
Calibrate
Options
About

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
3.1 Data Input.
Two data input screens are used throughout the tester’s setup and operation:
1. Numeric keypad screen — used to input values for the timer and limit elds.
2. Alpha-Numeric keypad screen — used in text elds
»Example: The Program Name Field.
Examples of each are shown below:
Fig. 4b. Alpha-Numeric Keypad Screen.
Fig. 4a. Numeric Keypad Screen.
!
To access: press desired data eld with your nger or stylus.
Press the SHIFT key to change case.

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
3.2 Run Mode Screen.
1. Test Fail
2. Test Pass
3. Access Conguration Mode
4. Pressure over Time test graph
5. Test Result Value
6. Timer
7. Pressure in psig
Fig. 5. Run Mode Screen.
1
2
3
4
6
5
7

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
4Conguration.
!
CAUTION! Unauthorized changes in the calibration menus will
affect the functionality of the test.
The conguration of this unit is separated into four main menus with user
congurable settings:
Prog
Units
Calibrate
Options
Program Settings
Three menus control all the parameters associated with the test process:
Program Settings
Engineering Units and Resolution
Sensor Calibration Settings
User options (Touchscreen Calibration, Clock, I/O Setup,
Data Logging, Change PIN, Serial Port, and Ethernet
Settings)
Pressure
Fixture
Settings
Pressure test settings
Fixture valve settings
Test parameters

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
4.1 Pressure.
1. Test Pressure — Press the Test Pressure data eld and
enter desired test pressure on the numeric keypad screen.
2. Next Program — Link programs together by entering the
number of the next program (upper left corner) in the Next
Program data eld. This allows the tester to jump to the de-
sired next program upon a pass result in the current test.
3. Pressure Tolerance ± — The amount of tolerance on the
test pressure. Enter positive (+) and negative (-) limits in the
data eld to the right of the Test Pressure data eld.
4. Current Pressure — Displays the current pressure when
Valve On is check and test port is capped.
5. Valve On — Check box the opens the test port valve.
6. Stats —
7. Loops — Loops programs however many times
1
2
3
4
5
6
LEGEND
Positive/Negative
±
USB not plugged in
Tester unlocked
Δ P
Test type: Pressure
Decay
More Info
Next Program
Previous Program
Fig. 6. Pressure Settings Screen.
!
Entering the same
number as the
current test will not
loop tests.
!
A test failure will
cancel the jump to
the next program
7

14
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Setting Test Pressure
To set the test pressure, place a master part or plug onto the test port.
1. Press the Test Pressure data eld with your nger or stylus and enter the test
pressure value on the numeric keypad screen.
2. Set the desired ± Pressure Tolerances.
3. Check the Valve On box.
4. The internal pneumatics will open to allow the pressure from the regulator out
to the front port.
5. The pressure sensor will show the current pressure in the Curr. Pressure data
eld.
6. Adjust the regulator until the specied pressure from the Test Pressure value
eld is achieved.
7. Uncheck the Valve On box when nished.
Parameters to USB
The parameters of test can be either saved to or loaded from an external USB plugged
into the USB port on the front of the tester.

15
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
LEGEND
Positive/Negative
±
USB not plugged in
Tester unlocked
Δ P
Test type: Pressure
Decay
Next Program
Previous Program
4.2 Fixture.
1
2
3
4
1. Pre-Test Op 1 — The amount of time the output will be set
prior to test start.
2. Post-Test Op 1 — The amount of time until the valves
de-energize at the end of the test.
3. Hold Clamps on Fail — Keeps the clamps in their test po-
sition and the fail indicator LED will ash to alert the user of
failure.
4. Output Results — Output the results via USB or Ethernet.
The xture menu controls the xturing valves. These valves can
be used to activate pneumatic xturing tools or seals to capture
the part for testing.
All outputs are supplied as four-way valves with one normally
open and one normally closed port. The outputs can be used
as a three-way valve by plugging the normally open port. The
normally open port will be plugged from the factory.
!
Clamps, Coupling
outputs, and Fixtur-
ing Timers are all
similar terms used to
describe pneumatic
outputs that can
be used for various
functions.
These outputs are
used to actuate
tooling, manipulate
a part, or activate
a pneumatic seal
around a part.
!
Fig. 7. Fixture Settings Screen.

16
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Setting Fixture Timers
To set the test pressure, place a master part or plug onto the test port.
1. Press the Pre-Test Op 1 data eld with your nger or stylus and enter your val-
ues with the numeric keypad screen.
b. A minimum value of 0.1 sec. must be entered in the data eld. This time is
the amount of time the output will be set prior to test start.
3. Press the Post-Test Op 1 data eld with your nger or stylus and enter your val-
ues with the numeric keypad screen.
a. Leaving the Post-Test Op 1 timer at zero will de-energize all valves at the end
of the test.
2. Under Hold Clamps on Fail, select the on or off radio buttons.
c. Select this option to keep the clamps in their test position and the fail indica-
tor LED will ash to alert the user of failure.
d. The user can acknowledge the failure by pressing the fail LED and the
clamps will then follow the original set release timer.
Output Results
Select the check boxes for USB or Ethernet, in conjunction with set Data Logging op-
tions (discussed in Data Logging section) to output the desired results to either a USB
drive or over Ethernet.
!
The Pass/Fail results sent out to the I/O will not be posted
until the failure has been acknowledged.

17
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
LEGEND
Positive/Negative
±
USB not plugged in
Tester unlocked
Δ P
Test type: Pressure
Decay
More Info
Next Program
Previous Program
4.3 Settings.
1
2
7
9
1. Pre-Fill — Allows the test device to
be lled via a second regulated source,
typically at a higher pressure for in-
creased air volume.
2. Fill — The amount of time the pneumat-
ic outputs will be active to ll the test
part with regulated pressure.
3. Settle — The amount of time the pneu-
matic outputs have to isolate the test
part from any incoming pressure.
4. Test — The amount of time the test will
measure the change in pressure.
5. Data Logging — Output the results via
USB or Ethernet.
6. Vent — A safety mechanism to allow
test pressure to be evacuated form the
test part before the user removes the
part from the tester.
3
4
5
6
8
7. Pre Fill Settle — A settling time
during ll before pressure tolerance
limits are measured (typically half of
the total ll time).
8. Test Limits — A limit amount of de-
cay before the timer expires.
a. Increase: pressure increase during
test timer to trigger failure (if En-
abled Increase Limit checkbox is
checked).
b. Decay: pressure decrease during
test timer to trigger failure.
9. Volume — Combined product and
tester air volume used to calculate
approximate leak rate.
Fig. 8. Settings Screen.

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Setting Testing Parameters
The following parameters control test air presented to the test part:
1. Press the Pre-Fill data eld with your nger or stylus and enter your values with
the numeric keypad screen.
b. Used with larger part volumes (greater than 300cc).
2. Press the Pre-Fill Settle which is a settling time during ll before pressure toler-
ance limits are measured (typically half of the total ll time).
3. Press the Fill data eld and enter the amount of time the pneumatic outputs will
be active to ll the test part with regulated pressure.
4. Press the Settle data eld and enter the amount of time the pneumatic outputs
have to isolate the test part from any incoming pressure.
a. This allows for the thermodynamics and/or compliance of the part to
reach equilibrium.
2. Press the Test data eld and enter the amount of time the test will measure the
change in pressure.
c. This test observes for a decay in pressure.
d. The decay is evaluated against the test limits to determine a Pass/Fail
state.
6. Under the Vent data eld, select either the Timed or Auto radio boxes.
1. Timed: vents the pressure for the amount of time inputted.
2. Auto: releases pressure to a safe limit (typically 0.5 psi).
3. Once the pressure is released, the test is concluded.
7. In the Test Limits section, values (in psig) can be entered in the Increase and
Decay data elds.
h. Enter an increase limit to verify that no external or thermal dynamic
forces cause the pressure to increase over the test time.
i. If the increase limit is used, the Evaluate at End of Test checkbox must
also be checked.
j. With a decay limit set and the limit is reached before the timer ends, the
test will short cycle and result in a fail condition.
k. To see the decay in the full timer length, check the Evaluate at End of
Test checkbox.

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Setting Testing Parameters, cont.
8. The Volume data eld displays the combined product and tester air volume used
to calculate an approximate leak rate.
i. Enter a value of “0” in the Volume data eld to disable calculation.
Output Results
Select the check boxes for USB or Ethernet, in conjunction with set Data Logging op-
tions (discussed in Data Logging section) to output the desired results to either a USB
drive or over Ethernet.

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Engineering units and the resolution of the pressure readings can be selected from a
list.
1. Pressure Units — There are six se-
lectable engineering units:
b. psig — pounds per square inch
gauge
c. mbar — millibars
d. mmHg — millimeters of mercury
e. inH2O — inches of water column
f. kPa — kilopascals
g. cmH20 — centimeters of water
column
2. Test Pressure Digits — Use the
radio buttons to select a resolution
up to the thousandth power.
3. Result Pressure Digits — a.Use
the radio buttons to select a resolu-
tion up to the hundred-thousandth
power.
4. Atmospheric Pressure — Used
in the Standard Cubic Centimeters
per Minute (SCCM) leak rate calcu-
lation.
a. The default value is set to the
pressure at sea level (14.70 psi).
1
2
3
4
4.4 Units.
Fig. 9. PD Units and Resolution Screen.