Ametek mocon OX-TRAN 2/48 User manual

Revision E
Part Number 143-218
OX-TRAN®
Model 2/48
Operator’s Manual
Gas-Detection
Lauper Instruments AG
Irisweg 16B
CH-3280 Murten
Tel. [phone]
[email protected]
www.lauper-instruments.ch

Trademarks & Patents
MOCON, COULOX, and OX-TRAN are registered trademarks of Mocon, Inc.
For information on applicable patents see:
https://www.ametekmocon.com/aboutus/legal/intellectualproperty
Copyright© 2021 MOCON, Inc. All rights reserved.

OX-TRAN Model 2/48 H Operator’s Manual About This Manual
MOCON, Inc. REVISION E iii
About This Manual
This manual explains how to set up and use the OX-TRAN Model 2/48 Oxygen Transmission Rate System.
This manual is designed for viewing electronically. Most references to other sections or chapters in this
document are hyperlinks which can be used to navigate to the referenced section.
Please use the following guide to get started with the system.
If You Want To Set Up the OX-TRAN Model 2/48
1. Prepare your test site.
See Appendix A “Site Preparation Instructions” starting on page A-1 in this manual.
2. Install the OX-TRAN components.
See Chapter 2 “Setting Up” starting on page 2-1 in this manual.
If You Want Some Background on How the System Works:
1. Get an overview of the system.
See Chapter 1 “Introduction” on page 1-1 in this manual.
2. Learn how the OX-TRAN measures oxygen transmission.
See Appendix D “Theory of Operation” on page D-1 in this manual.
3. Learn about the software.
See Chapter 4 “Using the Instrument Software” starting on page 4-1 in this manual.
If You Want To Get Started Measuring Oxygen Transmission Rate:
See Chapter 3 “Preparing for a Test” beginning on page 3-1, Chapter 5 “Testing Packages”
on page 5-1 and Chapter 6 “Testing Flat Films” on page 6-1.
If You Have Problems Operating the System:
1. If an error message appears on instrument screen see Chapter 8 “Troubleshooting”
beginning on page 8-1 in this manual.
2. If no error message appears but you have other problems, see Chapter 8 “Troubleshooting”
beginning on page 8-1 in this manual.
SERVICE NOTE:
Please do not hesitate to call MOCON in the USA at [phone]. We want you to receive the
best in product support services.

Safety Information OX-TRAN Model 2/48 H Operator’s Manual
iv REVISION E MOCON, Inc.
Safety Information
Be sure to read and understand this section and all other applicable chapters of the Operator's Manual and all
on-product safety signs before setting up, operating, and maintaining this analyzer.
Safety signs appear in this manual and on the analyzer. All safety signs are identified by the words WARNING and
CAUTION. These words signify the following:
•WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or
serious personal injury.
•CAUTION indicates a potentially hazardous situation which, if not avoided, may result in moderate
personal injury and/or possible damage to the analyzer and its components.
To avoid personal injury and equipment damage, observe the following precautions:
Installation Precautions
•Use appropriate precautions when lifting or moving the instrument. A four-person lift is recommended.
•The maximum pressure applied to the instrument from the Compressed Air supply must not exceed
100 psi (1.9 bar), or damage to the instrument will occur.
•The maximum pressure applied to the instrument from the Carrier Gas supply must not exceed 28 psi
(6.9 bar), or damage to the instrument will occur.
Operating Precautions
•To avoid plumbing contamination use only specified gas types at recommended operating pressures.
•Use only HPLC-grade water in the Carrier Gas humidity generator.
•Use only distilled water in the Chamber RH water reservoir.
•Do not expose the RH probe to an environment with RH greater than 90% RH.
Maintenance and Service Precautions
WARNING! HAZARDOUS VOLTAGES ARE PRESENT INSIDE THIS INSTRUMENT. SERVICE
SHOULD BE PERFORMED BY QUALIFIED PERSONNEL ONLY.
AVERTISSMENT: CET INSTRUMENT PRESENTE DES NIVEAUX DANGEREUX DE TENSION.
L'ENTRETIEN DOIT ETRE EFFECTUE PAR UN PERSONNEL QUALIFIE
UNIQUEMENT.
WARNING! Protection may be impaired if this device is not used in the manner specified.
•Maintenance and service should only be performed by qualified personnel.
•Make sure the instrument is powered OFF and unplugged from the power source before removing the
covers to perform any internal maintenance or service. Failure to do so can result in electrical shock,
which can cause injury or death.

OX-TRAN Model 2/48 H Operator’s Manual Table of Contents
MOCON, Inc. REVISION E v
Table of Contents
About This Manual ........................................................................................................................................iii
Safety Information........................................................................................................................................ iv
Chapter 1: Introduction..............................................................................................................................1-1
Features...............................................................................................................................................1-2
Measuring an Oxygen Transmission Rate............................................................................................1-3
Testing Packages and Films ................................................................................................................1-4
Permeation Test Overview ...................................................................................................................1-6
Individual Zero Phase.....................................................................................................................1-6
Conditioning the Sample ................................................................................................................1-6
ReZero State..................................................................................................................................1-6
Cell Examination State ...................................................................................................................1-6
Bypass State ..................................................................................................................................1-6
Test Completion .............................................................................................................................1-6
Report Generation..........................................................................................................................1-6
Chapter 2: Setting Up ...............................................................................................................................2-1
Unpacking the System .........................................................................................................................2-1
Preparing for Installation ......................................................................................................................2-1
Front Panel Parts and Controls ............................................................................................................2-2
Back Panel Parts and Controls.............................................................................................................2-3
Top View Onboard Parts and Controls.................................................................................................2-4
Details of Other Onboard Parts and Controls .......................................................................................2-5
Carrier Gas ..........................................................................................................................................2-6
Test Gas Supply...................................................................................................................................2-6
Gas Distribution System.......................................................................................................................2-6
Connecting the Carrier Gas Line ..........................................................................................................2-6
Connecting a Carrier Gas Supply ...................................................................................................2-7
Setting the Carrier Gas Supply Pressure..............................................................................................2-8
System Outgassing ..............................................................................................................................2-8
Chapter 3: Preparing for a Test.................................................................................................................3-1
Testing Basics......................................................................................................................................3-1
How Barrier Properties Affect Testing ..................................................................................................3-1
Testing Very Good Barriers ............................................................................................................3-1
Testing Very Poor Barriers .............................................................................................................3-1
Testing Mixed Barriers....................................................................................................................3-2
Testing Moisture Sensitive Barriers ................................................................................................3-2
Developing Test Methods.....................................................................................................................3-2
The Examination Time....................................................................................................................3-2
The ReZero Frequency ..................................................................................................................3-2
Individual Zero Processing .............................................................................................................3-3
Purging the Sample........................................................................................................................3-4
Conditioning the Sample ................................................................................................................3-5
Using the Automatic Check Function..............................................................................................3-6
Using the Reference Check Function .............................................................................................3-6
Determining When to Stop a Test...................................................................................................3-7
Choosing a Test Method ......................................................................................................................3-7
The Auto Test Method....................................................................................................................3-7
The Advanced Test Method............................................................................................................3-7
Saved Test Methods ......................................................................................................................3-7

Table of Contents OX-TRAN Model 2/48 Operator’s Manual
vi REVISION E MOCON, Inc.
Humidified Environment Testing...........................................................................................................3-8
Filling the Carrier Gas Water Reservoir ..........................................................................................3-8
Loading and Unloading a Test Cartridge ..............................................................................................3-9
Chapter 4: Using the Instrument Software.................................................................................................4-1
Software Features................................................................................................................................4-1
Instrument Software Structure and Organization ..................................................................................4-1
Chapter 5: Testing Packages....................................................................................................................5-1
Testing Suggestions.............................................................................................................................5-1
Package Mounting Methods.................................................................................................................5-2
Mounting Rigid and Semi-Rigid Packages............................................................................................5-3
Mounting Flexible Packages ................................................................................................................5-3
Mounting Packages using a Package Adapter Cartridge......................................................................5-4
Tube Mounting Packages...............................................................................................................5-5
Package Purging..................................................................................................................................5-5
Package Conditioning ..........................................................................................................................5-5
Setting Up and Starting a Package Test...............................................................................................5-6
Monitoring and Controlling a Package Test ..........................................................................................5-6
Chapter 6: Testing Flat Film Samples .......................................................................................................6-1
Testing Suggestions.............................................................................................................................6-1
Preparing for a Film Test......................................................................................................................6-2
Sample Size.........................................................................................................................................6-2
Using Masks ........................................................................................................................................6-2
Orienting the Sample ...........................................................................................................................6-3
Mounting a Sample in a Film Cartridge ................................................................................................6-4
Sample Purging....................................................................................................................................6-5
Sample Conditioning ............................................................................................................................6-5
Setting Up and Starting a Film Test......................................................................................................6-6
Monitoring and Controlling a Film Test .................................................................................................6-6
Chapter 7: Maintenance............................................................................................................................7-1
Cleaning the Instrument .......................................................................................................................7-1
Maintaining the Test Cells ....................................................................................................................7-2
Test Station O-Rings and Part Numbers ..............................................................................................7-2
Maintaining the Oxygen (Coulox) Sensor .............................................................................................7-3
Verifying Oxygen Sensor (Coulox) Performance ............................................................................7-3
Replacing the Coulox Sensor .........................................................................................................7-3
Maximizing Coulox Sensor Life ......................................................................................................7-3
System Standby...................................................................................................................................7-4
System Shutdown for Storage or Repair ..............................................................................................7-4
Chapter 8: Troubleshooting.......................................................................................................................8-1
Error Messages and Warnings .............................................................................................................8-1
Troubleshooting Testing Problems .......................................................................................................8-1
Recovering from a Sensor Over-Range Condition................................................................................8-2
Recovering from a Power Failure .........................................................................................................8-2
Chapter 9: Specifications ..........................................................................................................................9-1
Environmental Requirements ...............................................................................................................9-1
Electrical Requirements .......................................................................................................................9-1
Physical Specifications.........................................................................................................................9-2
Gas Supply Requirements ...................................................................................................................9-2
Sample Conditioning Capabilities.........................................................................................................9-2

OX-TRAN Model 2/48 H Operator’s Manual Table of Contents
MOCON, Inc. REVISION E vii
Transmission Rate Measurement Capabilities .....................................................................................9-3
Appendix A: Site Preparation Instructions ................................................................................................ A-1
Appendix B: Spare Parts.......................................................................................................................... B-1
Appendix C: Warranty and Service Policies ............................................................................................. C-1
Appendix D: Theory of Operation............................................................................................................. D-1
How the Oxygen Sensor Works .......................................................................................................... D-1
How the Transmission Rate is measured ............................................................................................ D-1
Factors that Affect the Transmission Rate of a Barrier Material........................................................... D-1
Barrier Temperature ...................................................................................................................... D-1
Test Gas Driving Force.................................................................................................................. D-2
Barometric Pressure...................................................................................................................... D-2
Relative Humidity .......................................................................................................................... D-2
How a Humidified Carrier Gas is Generated........................................................................................ D-3
How a Humidified Test Gas is Generated............................................................................................ D-3
How the ReZero Cell Works................................................................................................................ D-3
How the Automatic Purge Function Works .......................................................................................... D-4
How the Automatic Conditioning Function Works................................................................................ D-4
How the Automatic Check Function Works.......................................................................................... D-5
How the Reference Check Function Works ......................................................................................... D-5
How the Auto-Test Method Works....................................................................................................... D-6
Appendix E: Electrical and Plumbing Diagrams ....................................................................................... E-1
Appendix F: Permeant Sensor Adjustment................................................................................................F-1
Permeant Sensor Performance Check .................................................................................................F-1
Performing a Permeant Sensor Adjustment .........................................................................................F-2
Permeant Sensor Adjustment Test Setup ............................................................................................F-2
Appendix G: Compliance ......................................................................................................................... G-1

Table of Contents OX-TRAN Model 2/48 Operator’s Manual
viii REVISION E MOCON, Inc.
Figures
Figure 1-1: OX-TRAN Model 2/48 System ................................................................................................1-1
Figure 1-2: An OX-TRAN Model 2/48 Permeation Cell..............................................................................1-3
Figure 1-3: Large Tray Cartridge...............................................................................................................1-4
Figure 1-4: Package Adapter Cartridge.....................................................................................................1-4
Figure 1-5: Bottle & Cup Cartridge ............................................................................................................1-5
Figure 1-6: Film Cartridge .........................................................................................................................1-5
Figure 2-1: Front Panel Parts and Controls ...............................................................................................2-2
Figure 2-2: Back Panel Parts and Controls ...............................................................................................2-3
Figure 2-3: Top View Onboard Parts and Controls....................................................................................2-4
Figure 2-4: Carrier Gas Humidifier ............................................................................................................2-5
Figure 2-5: Test Cell Details......................................................................................................................2-5
Figure 2-6: System Plumbing Connection Diagram...................................................................................2-7
Figure 3-1: Individual Zero with a Loop .....................................................................................................3-3
Figure 3-2: Humidifier Fill Port and Controls..............................................................................................3-9
Figure 3-3: Installing a Test Cartridge .....................................................................................................3-10
Figure 4-1: Software Home Screen of OX-TRAN Model 2/48.....................................................................4-2
Figure 5-1: Packages are testing on OX-TRAN MODEL 2/48 ...................................................................5-2
Figure 5-2: Rigid Package Test Cartridge .................................................................................................5-3
Figure 5-3: Flexible Package Test Cartridge .............................................................................................5-4
Figure 5-4: Tube Mounted Packages ........................................................................................................5-5
Figure 6-1: Mounting a Film Sample .........................................................................................................6-5
Figure 7-1: Test Station Components........................................................................................................7-2
Figure 9-1: Electrical Diagram Page 1.................................................................................................... E-2
Figure 9-2: Electrical Diagram Page 2.................................................................................................... E-3
Figure 9-3: Electrical Diagram Page 3.................................................................................................... E-4
Figure 9-4: Electrical Diagram Page 4.................................................................................................... E-5
Figure 9-5: Plumbing Diagram Page 1 ..................................................................................................... E-6
Figure 9-6: Plumbing Diagram Page 2 ................................................................................................... E-7
Tables
Table 2-1: Front Panel Parts and Controls ................................................................................................2-2
Table 2-2: Back Panel Controls and Connections .....................................................................................2-3
Table 2-3: Top View of Onboard Parts and Controls .................................................................................2-4
Table 2-4: Details of Other Onboard Parts and Controls ...........................................................................2-6
Table 3-1: Carrier Gas Reservoir and Fill Port ..........................................................................................3-9
Table 7-1: Test Station Replacement Components ...................................................................................7-2
Table 9-1: Environmental Requirements ...................................................................................................9-1
Table 9-2: Electrical Specifications............................................................................................................9-1
Table 9-3: Physical Specifications.............................................................................................................9-2
Table 9-4: Gas Supply Specifications........................................................................................................9-2

OX-TRAN Model 2/48 Operator’s Manual Introduction
MOCON, Inc. REVISION E 1-1
Chapter 1:Introduction
This chapter provides a brief overview of the OX-TRAN Model 2/48 Oxygen Transmission Rate System.
Read this chapter to get an overview of:
•The features of the OX-TRAN Model 2/48 system
•A summary of how an Oxygen Transmission Rate measurement is performed
•A summary of the basic steps in a permeation test
•A summary of how Package and Film testing is performed
Figure 1-1: OX-TRAN Model 2/48 System

Introduction OX-TRAN Model 2/48 Operator’s Manual
1-2 REVISION E MOCON, Inc.
Features
The following features of the OX-TRAN Model 2/48 Oxygen Transmission Rate System make it very
versatile and easy to use:
•Fully automatic (Hands Off) testing.
•Four Test Cells to provide increased test capacity.
•Four Conditioning cells to speedup through-put.
•Removable Test Cartridges for faster sample mounting.
•TruSeal™ Test Cells for increased performance.
•Test Cartridges available for Cups, Bottles, Trays, Flexible Packages and Films.
•Ambient temperature only – no temp control.
•Automatic Barometric Pressure compensation.
•Automatic control of Pressure, Flow and RH on Carrier Gas side.
•Independent control of the Carrier Gas RH.
•Advanced Gas Saver function reduces gas consumption.
•Advanced sample Smart Conditioning Mode.
•Advanced Auto-Purge function to purge packages.
•Advanced Reference Check function to verify instrument performance.
•Advanced Automatic Test function to simplify testing of samples with unknown properties.
•Advanced oxygen sensor over-range recovery function.
•Advanced Quick Check function to detect potential over range conditions.
•Absolute coulometric, patented and low maintenance Coulox oxygen sensor.
•Automatically save and print Test Results.
•Internal storage of at least 100 Test Results.
•Integrated and intuitive touch screen operator interface.
•Remote Access and Control (requires optional Perm-Net Light software).
•Standard Ethernet port (100T).
•Dual USB 2.0 ports (for connection of keyboard, mouse or memory devices).
•Conforms to ASTM D3985, F1927, F1307 and F2622.

OX-TRAN Model 2/48 Operator’s Manual Introduction
MOCON, Inc. REVISION E 1-3
Measuring an Oxygen Transmission Rate
To make an accurate transmission rate measurement a Test Gas (20.9% oxygen) is applied to one side of
the barrier material to be tested and the other side is swept with an oxygen free Carrier Gas (usually a
nitrogen/hydrogen mix). This process is illustrated in Figure 1-2 which depicts a package mounted in a
Diffusion Cell designed for a Cup or Tray.
As shown in the illustration the package is mounted between the parts of the Diffusion Cell. The sealing
surfaces and O-rings in the cell prevent outside air from affecting the measurement.
The Test Gas side of the sample is exposed to ambient air environment. Real time environmental
temperature, relative humidity, and barometric pressure, are monitored and recorded by the OX-TRAN
Model 2/48 .
The Carrier Gas passes through a catalyst to remove any residual oxygen and then enters the carrier side
of the cell. As oxygen permeates the sample barrier it mixes with the Carrier Gas. The output side (exhaust)
of the diffusion cell is routed to an oxygen sensor. The amount of oxygen in the carrier gas is measured
using the patented Coulox oxygen detector.
Seal leakage in the diffusion cell can be a significant source of error when measuring the transmission rate
of a sample. The TruSeal™ flush ring at the perimeter of the cell minimizes the effect of ambient oxygen on
the measurement. During a test, the TruSeal™ flush ring is purged with carrier gas minimizing the
possibility of leakage past (or permeation through) the seals.
Figure 1-2: An OX-TRAN Model 2/48 Permeation Cell
Flush Gas Out
Test Gas (Ambient Air)
Carrier Gas Out
Flush Gas In
Carrier Gas In

Introduction OX-TRAN Model 2/48 Operator’s Manual
1-4 REVISION E MOCON, Inc.
Testing Packages and Films
To test packages (or films) the sample must be mounted in a Diffusion Cell. A Diffusion Cell exposes one
side of the sample barrier to a Test Gas (ambient air in OX-TRAN Model 2/48) and the other side to a
Carrier Gas. The carrier gas supplied to the cell can be dry or at a specified RH.
The Diffusion Cells used in the OX-TRAN Model 2/48 expose the Test Gas side of the sample barrier to the
environmental ambient air. Real time environmental temperature, RH and barometric pressure are
monitored and recorded by the OX-TRAN Model 2/48 instrument.
The design of an effective Diffusion Cell must accommodate the physical characteristics of the sample to be
tested. A Diffusion Cell design optimized for testing small cups may not be suitable for testing large trays.
The OX-TRAN Model 2/48 contains an upper deck for testing, and a lower deck for conditioning. Each deck
has positions for four removable Diffusion Cells. These removable Diffusion Cells are referred to as Test
Cartridges. To accommodate most testing requirements MOCON offers a selection of Test Cartridges. The
design of these Test Cartridges is optimized for different types of samples (bottles, trays, pouches, bags,
cups and films).
To test packages the sample must be mounted in an appropriate Test Cartridge. After the sample is
mounted in a Test Cartridge, it is installed and clamped into one of the four positions on the testing deck for
testing, or on the conditioning deck for conditioning. The four positions on the testing deck are referred to as
Test Cells. The method used to mount the sample in the Test Cartridge is dependent on the design of the
cartridge and the sample. For more information on mounting packages see the information supplied with
your Test Cartridges. See Figure 1-3, Figure 1-4 and Figure 1-5 for examples of some of the Test
Cartridges that are available. For more information on testing packages see Chapter 5.
To test a film sample, it is prepared and mounted in a Film Test Cartridge. After the sample is mounted, it is
installed and clamped into one of the positions on the testing deck. See Figure 1-6 for an illustration of the
Film Test Cartridge. For more information on mounting and testing Film Samples see Chapter 6.
Figure 1-3: Large Tray Cartridge Figure 1-4: Package Adapter Cartridge

OX-TRAN Model 2/48 Operator’s Manual Introduction
MOCON, Inc. REVISION E 1-5
Figure 1-5: Bottle & Cup Cartridge
Figure 1-6: Film Cartridge

Introduction OX-TRAN Model 2/48 Operator’s Manual
1-6 REVISION E MOCON, Inc.
Permeation Test Overview
A “Permeation Test” consists of up to two phases that are performed using a Test Cell. The “Cell” may
contain a package cartridge or a film cartridge. The Test Phase (always present) is used to measure the
transmission rate of the test sample. The Individual Zero Phase is optional and may occur at the beginning
or end of a Permeation Test. Each phase in the test consists of a series of discrete states. A Permeation
Test may utilize all or only a subset of the possible test states. During a test, the steps (or states) within
each phase are executed in a fixed order. This order is called the “Test Sequence”. A brief description of the
phases and states within a permeation test are given below:
Individual Zero Phase
An Individual Zero Phase is used to determine the amount of oxygen that is present in the carrier gas from
factors other than actual transmission through the sample. The Individual Zero value is used to correct the
transmission rate values obtained from each sample during testing. For more information on when and how
to use an Individual Zero Phase see “Individual Zero Processing” in Chapter 3.
Conditioning the Sample
Almost every material requires a period of time to acclimate to the test environment and reach equilibrium.
A conditioning state can be specified to allow the barrier to “Condition” to the test environment. When used,
the Conditioning State will occur at the beginning of each test phase. For more information on how to use
Conditioning see “Conditioning the Sample” in Chapter 3.
ReZero State
Periodically the instrument baseline must be measured so that any changes in the baseline will not affect
the accuracy of your transmission rate data. This is done during a “ReZero State” by measuring the
apparent oxygen transmission rate of the ReZero Cell.
Cell Examination State
The Cell Examination State is used to measure the transmission rate of the barrier sample. The carrier gas
leaving the Test Cell is sent to the oxygen sensor where the amount of oxygen contained in the gas is
measured to determine a transmission rate.
Bypass State
When no gas is being routed to the Coulox sensor it is said to be in the Bypass State. The Bypass State is
used to maximize the useful life of the sensor. The Coulox sensor is automatically placed in Bypass during
conditioning, when tests are completed or when an excessively high level of oxygen is detected.
Test Completion
At some point sufficient measurements will have been made to accurately determine the transmission rate
of the samples. A Permeation Test can be terminated manually by the user, after a fixed number of test
cycles or using an automatic convergence process. When testing is complete, the cell is removed from the
test sequence and no further transmission rate examination of that sample is performed. For more
information on stopping a transmission rate test see “Determining When to Stop a Test” in Chapter 3.
Report Generation
You can request a report for one or all cells at any time until a new permeation test is started. See the
instrument Help System for information on printing reports.

OX-TRAN Model 2/48 Operator’s Manual Setting Up
MOCON, Inc. REVISION E 2-1
Chapter 2: Setting Up
This chapter provides information on how to set up an OX-TRAN Model 2/48 and prepare it for use.
Read this chapter to learn about:
•Unpacking the System
•Preparing for System Installation
•Front Panel Parts and Controls
•Back Panel Parts and Controls
•Testing Deck and Conditioning Deck Parts and Controls
•Connecting nitrogen line to the instrument
Unpacking the System
Each OX-TRAN Model 2/48 instrument is shipped in its own crate. Any optional kits or accessories may be
shipped in the instrument crate or in separate cartons. A checklist will be included for the instrument and
any of the optional kits you may have purchased.
If any components are missing or damaged please call MOCON in the USA at [phone].
Preparing for Installation
The Site Preparation Instructions (Appendix A) contain important information about preparing a location for
the instrument and the facilities required for your new instrument. Please read Appendix A before
proceeding with the installation of the OX-TRAN Model 2/48.
The ambient environmental conditions in which the instrument will be used must meet those specified on
page 9-1 in Chapter 9.
The OX-TRAN Model 2/48 should be placed on a bench or table capable of supporting approximately
102 kg (225 lbs.). The work surface should be flat, clean and free of excessive vibration.
If installing a printer that will be directly connected to the OX-TRAN Model 2/48, place it next to the
instrument. Read the manual that came with the printer for installation procedures.
Do not plug the instrument or printer into a power source until all components have been set up and
connected.
Before proceeding with the setup or operation of the instrument familiarize yourself with the locations and
names of the parts and controls on the front and rear of the instrument.

Setting Up OX-TRAN Model 2/48 Operator’s Manual
2-2 REVISION E MOCON, Inc.
Front Panel Parts and Controls
The names and locations of the parts and controls located on the front of the instrument are shown in
Figure 2-1, and Error! Reference source not found..
Figure 2-1: Front Panel Parts and Controls
Item
Name
Description
1
Instrument Display
The color touch screen display used for instrument control
2 Cooling Fans
The fans that supply air for heating and cooling the Test
Chamber.
3 Carrier Gas Inlet Port The fitting that connects the Carrier Gas supply to the instrument.
4 Test Cell Clamping Manifold The carrier gas block to connect test cartridges
Table 2-1: Front Panel Parts and Controls

OX-TRAN Model 2/48 Operator’s Manual Setting Up
MOCON, Inc. REVISION E 2-3
Back Panel Parts and Controls
The names and locations of the parts and controls located on the back of the instrument are shown in
Figure 2-2 and Table 2.2.
Figure 2-2: Back Panel Parts and Controls
Item
Name
Description
1 Power Inlet The connector for the power cord.
2 Fuse Holder The fuse holder contains the fuses used to protect the instrument.
3 Power Switch
The switch that is used to turn the instrument on and off.
l is ON
О is OFF
4 Network Port A 10/100T Ethernet port for connection to a network.
5 Enclosure Fan Exhausts The exhaust vents for electronics enclosure cooling fans.
6 Carrier Gas Inlet Port The fitting that connects the Carrier Gas supply to the instrument.
7 System Vents The vents for the ReZero cell, Cell Select valve and Sensor exhaust.
Table 2-2: Back Panel Controls and Connections

Setting Up OX-TRAN Model 2/48 Operator’s Manual
2-4 REVISION E MOCON, Inc.
Top View Onboard Parts and Controls
The names and locations of the parts and controls located on the back of the instrument are shown in
Figure 2-3 and Table 2.3.
Figure 2-3: Top View Onboard Parts and Controls
Item Name Description
1 Upper Deck Host 4 stations for testing
2 Lower Deck Host 4 stations for conditioning
3 Test Cell Stations Locations to place test cartridges
4 Test Cell Clamping Manifold The carrier gas block to connect test cartridges
5 Test Cartridge Clamp Bar The device used to clamp a Test Cartridge to the Test Cell gas ports.
6 Test Cell Clamp\Unclamp Button The button used to clamp and unclamp a Test Cartridge.
7 Test Cell Status Indicator The indicator used to annunciate the status of the Test Cell.
Table 2-3: Top View of Onboard Parts and Controls

OX-TRAN Model 2/48 Operator’s Manual Setting Up
MOCON, Inc. REVISION E 2-5
Details of Other Onboard Parts and Controls
Figure 2-4: Carrier Gas Humidifier
Figure 2-5: Test Cell Details
4
5
6
7

Setting Up OX-TRAN Model 2/48 Operator’s Manual
2-6 REVISION E MOCON, Inc.
Item
Name
Description
1 Water Reservoir - Carrier Gas Window showing the Carrier Gas Reservoir water level.
2 Reservoir Fill Line The Carrier Gas Reservoir maximum level line.
3 Reservoir Fill Port The fitting used to add water to the Carrier Gas reservoir.
4 Test Cell Gas Ports The Test Cell Inlet, Outlet and TruSeal gas ports.
5 Test Cartridge Clamp Bar The device used to clamp a Test Cartridge to the Test Cell gas ports.
6 Test Cell Clamp\Unclamp Button The button used to clamp and unclamp a Test Cartridge.
7 Test Cell Status Indicator The indicator used to annunciate the status of the Test Cell.
Table 2-4: Details of Other Onboard Parts and Controls
Carrier Gas
The OX-TRAN Model 2/48 requires a Carrier Gas mixture that is 98% nitrogen and 2% hydrogen. The
specific percentage of each gas is not critical. The percentage of hydrogen in the mixture may be as low as
1% or as high as 3%. The hydrogen is used with a catalyst in the instrument to remove any residual oxygen
in the Carrier Gas.
Compressed gas cylinders containing hydrogen require a “Hydrogen Regulator”. The tank fitting on a
Hydrogen Regulator uses left hand threads. The optional Regulator Assembly contains an approved
Hydrogen Regulator. A standard T size cylinder should provide sufficient gas to operate a single instrument
for several weeks.
Test Gas Supply
The OX-TRAN Model 2/48 utilizes ambient air as test gas supply.
Gas Distribution System
Each instrument ships with a local regulator/isolation device (called a Regulator Tee) that can be used to
connect the instrument to a common Carrier Gas distribution system. Figure 2-6 illustrates how a gas
distribution system for multiple instruments can be created using the provided Regulator Tee.
When using a compressed gas cylinder, consideration should be given to the impact cylinder replacement
will have on operational efficiency. Interruptions to the gas supply when a cylinder is changed (or goes
empty) will have an adverse effect on any active tests. Cylinder manifolds that provide an uninterrupted gas
supply during cylinder replacement are available from many gas suppliers.
Connecting the Carrier Gas Line
The OX-TRAN Model 2/48 has a gas inlet for connecting the Carrier Gas (nitrogen/hydrogen) supply. This
compression fitting is intended for use with 1/8” copper tubing. Refer to Figure 2-6 for the location of this
fitting and an example of plumbing system diagram.
The optional Startup Kit (052-734) contains 50 feet (14 meters) of tubing in addition to extra compression
nuts, ferrules and grease.