Southland OMD-480 User manual

OMD-480
Portable Percent Oxygen Analyzer
4045 E. Guasti Rd. #203
Ontario, CA 91761 USA
Web: www.sso2.com
Phone: [phone]
E-mail: [email protected]
OMD-480 Manual Rev 1.2 1_2015
Instruction Manual

Table of Contents
Part 1 Introduction
Part 2 Installation
Part 3 Operation
Part 5 Annexures
Part 4 Maintenance
1.1 General Introduction
1.2 Principle of Operation - e Oxygen Sensor
1.3 OMD-480 Specications
2.1 Receiving Your New Oxygen Analyzer
2.2 Rugged Enclosure Overview
2.3 Power / Charging Connections
2.4 Gas Connections
2.5 Installing the Oxygen Sensor
3.1 Understanding the Controls and eir Operation
3.2 Measurement Range Overview
3.3 Setting the Day and Time
3.4 Advanced USB Datalogging
3.5 Analog Output 0 - 1V DC
4.1 Span Calibration, using Ambient Air or Certied Span Gas
4.2 Procedure for Replacing the Sensor
4.3 Troubleshooting
5.1 Spare Parts List
5.2 Warranty
5.3 Material Safety Data Sheets
5.4 Conformance Certicate

Part 1 Introduction
1.1 General Introduction
e Southland Sensing OMD-480 Portable Percent Oxygen Analyzer is a microprocessor based port-
able analyzer designed for continous or intermittent measurements in a variety of applications and gas
mixtures.
e analyzer was designed with the customer in mind keeping the operations simple, while still featur-
ing a fast response and rugged design. Every eort has been made to use modern industrial compo-
nents and materials which has resulted in an advanced design, excellent performance and an overall low
cost of ownership.
Southland Sensing Ltd. appreciates your business and recommends to read through the complete manu-
al to be able to get the full experience from your new oxygen analyzer.
1.2 Principle of Operation - e Oxygen Sensor
e precision electrochemical oxygen sensor used in the OMD-480 is designed and manufactured by
Southland Sensing Ltd under a strict quality proceedure.
To understand how the oxygen analyzer functions, it is important to understand a little bit of the sensor
characteristics.
e active components in the precision electrochemical oxygen sensor is the anode, cathode and aque-
ous electrolyte which is all housed in a cell body. e oxygen molecules in the application pass through
the front sensing membrane. A chemical reaction occurs and a raw electrical current is generated.
is electrical current is proportional to the amount of oxygen in the application. e analyzer than
processes this raw electronic signal, compensates for temperature and barometric pressure variations
and converts the data into a parts-per-million or percent oxygen measurement value.
Once the data is displayed in real time on the full color backlite display, the user can then data log the
results via an analog 0 - 1V DC output or the built in USB Flash Drive.
Precision Electrochemical Oxygen Sensor

OMD-480
Portable Percent Oxygen Analyzer
Phone: [phone]; Fax: [phone]
E-mail: [email protected]; Web: www.sso2.com
4045 E. Guasti Rd. #203, Ontario, CA 91761 USA
Product Specications
Precision Electrochemical Sensor Technology
Large Color Display w/ User Friendly Menu
5 Standard Analysis Ranges
Auto-Ranging or Manual Range Mode
Continuous Analysis During Battery Charging
USB Datalogging via Flash Drive
Specications:
Accuracy: < 1% of Full Scale Range*
Analysis Range: 0-1%/5%/10%/25%/100%
Battery Indicator: Integrated into Color Display
Calibration: Periodically
Classication: IP66/ NEMA4X
Data Logging: Removable USB Flash Drive
Dimensions: 8.80 x 7.50 x 3.90 inch
Display: Full Color with Backlight
Enclosure: Rugged Polypropylene
Flow Sensitivity: 0.5 - 5 SCFH
Gas Connections: 1/8” Swagelok Tube Fitting
Output (Analog): 0 - 1V DC
Power: Rechargeable Battery
100 - 240 VAC AC Adapter
Pressure: Inlet, 5- 50 PSIG
Response Time: T90 in 10 Seconds
Sensor: PO2-160 Percent O2 Sensor
Sensor Life: 60 months
Temperature: 0 - 50 deg C
Temperature Compensation: Integral
Warranty: 12 months
Weight: 4.8 lbs
Applications:
“Inquiry for Application Expertise”
• Glove box or Pipeline Leak Detection
• Air Separation & Liquication
• Headspace Gas Analysis
• Beverage Grade CO2 Monitoring
• Heat Treating & Bright Annealing
• Inert Gas Welding of Exotic Materials
Optional Accessories:
• Optional Ranges: Fully Congured From Factory
• Customizeable Sample System w/Bypass Valve
• PO2-24 Oxygen Sensor with > 0.5% CO2 Present
• International Language Support (Coming Soon)

Part 2 Installation
2.1 Receiving your New Oxygen Analyzer
As soon as you receive your new Portable Percent Oxygen Analyzer, carefully unpack the unit and acces-
sories and inspect the electronics module, sensor housing for damage and also verify the oxygen sensor is
present.
CAUTION: Do not open the oxygen sensor packaging at this time. It is packed
in a Nitrogen purged bag. It is recommended that you read through the instruction
manual installation and operation sections before attempting to open the bag the oxy-
gen sensor is packed in. For questions, please contact the factory.
If damage to any portion of the new analyzer is present, stop and report damage to the shipping company
as well as the factory
e analyzer is shipped with all materials needed to install and prepare the system for operation. In some
instances, added sample system components are necessary to condition the gas sample before entering
the sensor housing. Southland Sensing oers free application consultation, and we encourage you to take
advantage of our engineers and their expertise.
Remote sensor housing installation: e sensor housing can be installed up to 6 feet from the electronics
module. Further than 6 feet will cause signal degredation which can cause the unit to give erronous read-
ings. It is also important to be mindful of EMI / RFI noise interference. Protection from EMI / RFI noise is
important for accurate readings.

Part 2 Installation
2.2 Rugged Enclosure Overview
All menu control and local backlite display is accessible from the inside front of the front door mounted on a
panel. e front panel has 5 push button membrane switches, a large backlite display which includes the oxy-
gen reading, battery life, time and date and USB icon.
Right below the display is a power switch with POWER on / o toggle, an OUTPUT connector for the 0 - 1V
DC analog output, and a CHARGE connector for the 12VDC power needed to re-charge the battery. On the
right side of the panel is a mounted USB connector.
e OMD-480 can be used as an online unit if necessary, the 12V DC charged can be le plugged in to the
unit while it operates 24/7 continously.
e OMD-480 is designed for indoor and outdoor installation usings its NEMA4X, IP66 enclosure.
Refer to part 3 operation section of this instruction manual for more information on how to operate the con-
trols and other functions of this advanced oxygen analyzer.

Part 2 Installation
2.3 Power / Charging Connections
e OMD-480 is powered by a rechargeable ni-cad battery. e portable analyzer accepts a 12V DC wall
charge power supply with a 0.5A current rating. Southland Sensing supplies a universal 100 - 240V AC wall
charger that has optional plugs for almost all countries.
One of the unique features about the OMD-480 is its ability to be charging while it is functioning. is al-
lows the user to plug in the OMD-480 and use it continously 24/7 while measuring oxygen or data logging
via the USB ash drive.
In the le corner of the display is a battery icon. is shows the user how much battery life is remaining.
e icon will show three bars and be in green when it is fully charged. Two bars and yellow means it is at the
middle of its charge capacity and one bar and a red color and the unit should be recharged. While charging
the icon will have a AC Plug through the unit showing that the battery is indeed being charged.
2.4 Gas Connections
e OMD-480 with its standard H3 ow through housing is designed for positive pressure samples and
requires incoming sample lines. e sample connections are 1/8” Swagelok tube ttings. e user is respon-
sible for added sample system components as well as sourcing a calibration gas.
ere is no recommended ow direction, the either bulkhead can be used as the inlet / outlet.
It is recommended to use Stainless Steel Tubing or a low permeable plastic tubing.
•Flow rate should be between 0.5 - 5.0 SCFH
•Inlet pressure should be between 5 - 50 PSIG
• Analyzer should be vented to atmosphere, take precau-
tion to make sure vent does not get blocked
Supplied Power Supply with International Adapters

Part 2 Installation
2.5 Installing the Oxygen Sensor using H3 Flow rough Sensor Housing
e OMD-480 can accept either a PO2-160 or PO2-24 (CO2 Applications) percent oxygen sensor. For
proper selection with your application, please view our online application guide or contact your local sales
rep.
Connect the process gas line and set your flow between 0.5 - 5.0 SCFH.
To Install the Sensor:
- Remove the cell holder cap by unscrewing the stainless steel collar.
- Li up on the top of the sensor housing and set to the side.
- Inspect O’ring for cracking, replace if necessary. Always lube your Orings!
- Remove the sensor from its box. With scissors, open nitrogen purged packaging
and remove the sensor.
- Visually inspect sensor for damage, if damaged notify the factory immediately.
- Remove the shorting pins across the back of the sensor board contacts.
- Place the sensor inside the housing with the metal screen mesh facing down and
the circuit board contacts facing up.
- Return upper portion of the sensor housing to the stainless steel bottom. Tighten
collar. Hand tight is acceptable to create an airtight seal.
- Start purge of process gas.
- If the analyzer has not been calibrating, refer to section 4.1 for more information.
CAUTION: Prior to installing the oxygen sensor. Read section 4.1
on performing a span calibration.
H3 Sensor Housing Top portion of sensor housing
Stainless Steel Collar
Bottom portion of sensor housing

Part 3 Operation
3.1 Understanding the Controls and their Operation
e OMD-480 Portable Percent Oxygen Analyzer is a feature packed unit with an easy to use menu
interface. e key attributes within the menu are the ability to select a measurement range, both
manually or set it to the auto-range mode. To calibrate the unit with a known gas, also refered to as a
SPAN Calibration or SPAN CAL. Adjust the Date / Time stamp on the display and to set the “minutes”
interval when data logging via USB ash drive.
All features are programmable / selectable through the MENU bottom. e UP / DOWN arrows will
allow you to select your setpoints and the enter buttom saves the data. If you want to cancel your selec-
tion, or return to the previous screen the escape key ESC will allow you to do this. Once the unit starts
up, the following HOME Screen will appear:
Operating Range
Current Sensor Reading
Identier, Manual
or Auto Range
Battery Level
(Charging)
USB Icon
OMD-480
Time & Date

Part 3 Operation
3.2 Measurement Range Overview
e OMD-480 Portable Percent Oxygen Analyzer allows the user to eld select 5 available ranges - cus-
tom ranges are available upon request. ese ranges can be selected in manual mode meaning they are
locked into that range by the user (only the analog output is locked), or they can be set to auto-range
so the analyzer will adjust to give you the best full scale resolution. e OMD-480 has the following
ranges as standard:
Range 1 0 - 1%
Range 2 0 - 5%
Range 3 0 - 10%
Range 4 0 - 25%
Range 5 0 - 100%
From the HOME screen, press the MENU key and the display will indicate:
Use the UP / DOWN keys to move the cursor to allow the user
to select AUTO-RANGE which will all ow the unit to cycle through
all ve ranges or MANUAL RANGE which will allow the user to
select a specic range and lock the analog output.
Decide which option will work best for your application. Move
the cursor button over the selection and press the ENTER key.
If you have selected AUTO RANGE, it will blink for a second
indicating this was selected. If you have selected the MANUAL
RANGE, the following screen will be brough up:
Use the UP / DOWN keys and bring the cursor besides the range to be
selected and press the ENTER key. e selected range will blink for
a second indicating the range has been selected.
Press the ESC key to move back to the previous screen.