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Summary of Contents for Southland OMD-625
- Page 1 OMD-625 Oxygen Analyzer Instruction Manual OMD-625 Oxygen Analyzer Rev 1.00 August 31st, 2022_DF Designed, Tested, and Assembled in California, USA 4045 E. Guasti Rd. #203 Ontario, CA 91761 USA : 1-949-398-2879 : sales@sso2.com : www.sso2.com...
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Page 2: Table Of Contents
OMD-625 Oxygen Analyzer Table of Contents Part 1 Introduction General Introduction Principle of Operation - The Oxygen Sensor 1.3 OMD-625 Specifications 1.4.1 General Safety Information (VAC) 1.4.2 General Safety Information (VDC) Location Installation Considerations Safety Considerations Part 2 Installation Receiving Your New Oxygen Analyzer Mounting The Oxygen Analyzer 2.3.1 Electrical Connections (VAC) -
Page 3: Introduction
Introduction General Introduction The Southland Sensing OMD-625 Oxygen Analyzer is a microprocessor based online unit designed for continous measurements in a variety of hazardous area applications and gas mixtures. The analyzer was designed with the customer in mind, keeping the operations simple while still featur- ing a fast response and rugged design. Every effort has been made to use modern industrial compo-... - Page 4 OMD-625 Oxygen Analyzer Product Specification Sheet Hazardous Area Online Process Oxygen Analyzer w/Sample System Designed for the Natural Gas Industry Class 1, Div 1 Groups B, C, D Custom Full Scale Range (i.e. 0 - 99.5 ppm) Precision Fuel Cell Oxygen Sensor Technology...
- Page 5 Product Specifications Oxygen Analyzer: Oxygen Sensor Technology: The oxygen sensor used in the OMD-625 is based on the The model OMD-625 oxygen analyzer combines a galvanic electrochemical fuel cell principal. All oxygen sensors rugged design with SSO2’s precision oxygen sen- are manufactured in house by Southland Sensing Ltd.
- Page 6 General Safety & Installation (VAC) This section is for AC powered analyzers, if your analyzer is DC powered proceed to the next page. This section summarizes the precautions applicable to the OMD-625 Oxygen Analyzer. Additional pre- cautions specific to this analyzer are contained in the following sections of the manual. To operate the analyzer safely and to obtain the best performance, follow the basic guidelines outlines in this owner’s manual.
- Page 7 General Safety & Installation (VDC) This section is for DC powered analyzers, if your analyzer is AC powered see the previous page. This section summarizes the precautions applicable to the OMD-625 Oxygen Analyzer. Additional pre- cautions specific to this analyzer are contained in the following sections of the manual. To operate the analyzer safely and to obtain the best performance, follow the basic guidelines outlines in this owner’s manual.
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Page 8: Location Installation Considerations
Location Installation Considerations The Southland Sensing OMD-625 Oxygen Analyzer is designed to be mounted on a wall or on a pipe in a general purpose, Class 1 Division 1 or Class 1 Division 2 Group B, C, D area. When installed outdoors in cold areas an optional integral heater is recommended as well as a heavy duty enclosure. -
Page 9: Installation
OMD-625 Oxygen Analyzer Installation Receiving Your New Oxygen Analyzer As soon as you receive your new oxygen analyzer carefully unpack the unit and accessories and inspect the interior and exterior of the analyzer for damage, and also verify the oxygen sensor is present. -
Page 10: Mounting The Oxygen Analyzer
Installation Mounting the Oxygen Analyzer The OMD-625 is designed to be mounted on a wall or around a pipe. See below for the mounting dimen- sions. If mounting in extreme temperature consider an enclosure and heater if necessary. Refer to Part 3: Operation section of this instruction manual for more information on how to operate the controls of this oxygen analyzer. -
Page 11: Electrical Connections (Vac)
OMD-625 Oxygen Analyzer Installation 2.3.1 Electrical Connections (VAC) This section is for AC powered analyzers, if your analyzer is DC powered proceed to the next page. Incoming power/signal output connections are made to the green terminal block located on the Back of the unit. -
Page 12: Electrical Connections (Vdc)
OMD-625 Oxygen Analyzer Installation 2.3.2 Electrical Connections (VDC) This section is for DC powered analyzers, if your analyzer is AC powered go to the previous page. Incoming power/signal output connections are made to the green terminal block located on the Back of the unit. - Page 13 OMD-625 Oxygen Analyzer Installation 2.3.3 Electrical Connections (2-Wire) This section is for 2-wire powered analyzers, if your analyzer is 6-wire powered see the previous two pages. Incoming power/signal output connections are made to the green terminal block located on the Back of the unit.
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Page 14: Gas Connections
CAUTION: Prior to installing the oxygen sensor read section 4.1 on per- forming a span calibration. The OMD-625 can accept either a TO2-133 or TO2-223 (for CO2 applications, i.e. natural gas) oxygen sensor for trace oxygen analysis. For percent measurement, the OMD-625 can accept either a PO2-160 or PO2-24 (for CO2 applications) oxygen sensor. For applications with <500 ppm H2S we offer an H2S resist-... -
Page 15: Integral Sample System Flow Diagram
OMD-625 Oxygen Analyzer Installation Integral Sample System Flow Diagram Southland Sensing Ltd. strives to select the highest quality sample system components in the market. All gas connections are made via compression tube fittings. Our valves are high quality leak tight which we rigorously test in our environmental chamber. Our flow indicators / flow meters are from Dwyer, an industry recognized leader in flow control When dealing with critical applications such as petrochemical processing and natural gas extraction, we want to make sure we can deliver a high quality sample system and we do so by partnering with some of the best brands in the market. -
Page 16: Operation
Operation Understanding the Controls and their Operation The OMD-625 Oxygen Analyzer is a feature packed unit with an easy-to-use menu interface. The key attributes within the menu are the ability to select a measurement range manually or using the auto- range mode, to calibrate the unit with a known gas, also referred to as a SPAN Calibration or SPAN CAL, and to perform a zero calibration (if necessary, for most applications it is not required). - Page 17 Other manufactures lock the display as well - the problem is if you over-range and the display is locked you have no idea what your oxygen value is. The OMD-625 solves this issue with a display that auto-ranges and the ability to manually lock the analog outputs.
- Page 18 PLC, DCS prior to connecting the 4 - 20mA. The OMD-625 is equipped with a 4 - 20mA analog output. When physically connecting the analog output, refer to the circuit board pinout in section 2.3 To verify the signal output of the 4 - 20mA circuit is working properly, connect an ammeter across the (+) and (-) pins.
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Page 19: Advanced Integral Alarms
OMD-625 Oxygen Analyzer Operation Advanced Integral Alarms The OMD-625 Oxygen Analyzer is equiped with 2 advanced relay contact alarms. These alarms can be configured as normally open or normally closed, have a delay mode built-in, and can be enabled or disabled when necessary. The alarms are rated at 5A @ 230VAC. If you are connecting to solenoid valves or a pump whose current can fluctuate greatly, it is adviseable to use a slave relay to ensure no damage occurs to the electronics. -
Page 20: Setting A Custom Range
OMD-625 Oxygen Analyzer Operation Setting a Custom Range The OMD-625 Oxygen Analyzer can have a custom range programmed into it in case you need a specific non-standard range. Once you have set your custom range, you can select it in the Manual Range menu to lock the 4-20 mA output to that range. To set a custom range, perform the following steps:... -
Page 21: Output Simulation
4 - 20mA. The OMD-625 allows the user to simulate an analog output to calibrate a PLC or DCS system. To ac- complish this, the OMD-625 will self generate a 4mA, 8mA, 12mA, 16mA or 20mA signal output. -
Page 22: Maintenance
DOWN TO DECREASE Let the reading stabilize for about 30 - 45 seconds and then proceed to ENTER TO CAL the following steps in the OMD-625 menu: ESC TO EXIT SPAN CALIBRATION: To calibrate the transmitter, press the MENU key then use the UP/DOWN keys to highlight the SPAN CAL option and press the ENTER key. -
Page 23: Span Calibration Using Certified Span Gas
OMD-625 Oxygen Analyzer Maintenance Span Calibration using a Certified Span Gas Calibration involves using a known span gas to match and adjust the oxygen sensor / ana- lyzer combo to a known value. This can be as simple as using ambient air that tends to be a constant 20.9% or a bottle of certified span gas from your local air separation company. For... -
Page 24: Procedure For Replacing The Sensor
OMD-625 Oxygen Analyzer Maintenance Procedure for Replacing the Oxygen Sensor The characteristics of a precision electrochemical fuel cell are similar to those of a battery. They both provide an output that is nearly constant throughout their useful life and simply fall of sharply to- wards zero at the end. -
Page 25: Zero Calibration
OMD-625 Oxygen Analyzer Maintenance Zero Calibration In theory, the oxygen sensor is linear over its measurement range and has no signal output when ex- posed to an oxygen free environment. However, in reality expect the analyzer to generate a small signal... -
Page 26: Annexures
Power Board, DC OMD-625 Gen 2 (4-Wire DC + Modbus) PCB-10041-4 Power Board, DC OMD-625 Gen 2 (100 - 240VAC) PCB-10041-5 Power Board, DC OMD-625 Gen 2 (100 - 240VAC + Modbus) ORING-1001 Sensor Housing O’ring FUSE-1001 Replacement Fuse OMD-625 For additional troubleshooting or replacement parts, please contact the factory: sales@sso2.com;... -
Page 27: Warranty
/ sensor are located visibly on the unit. Southland Sensing Ltd. reserves the right in its sole discretion to invalidate this warranty if the serial number does not appear. Limitations Southland Sensing Ltd. - Page 28 Product Identification Product Name Oxygen Sensor Series – PO2, TO2 series Synonyms Precision Electrochemical Sensor Manufacturer Southland Sensing Ltd, 4045 E. Guasti Rd. Suite 203 Ontario, CA 91761 Emergency Phone Number 1-949-398-2879 Preparation / Revision Date April 23rd, 2016 Notes Oxygen sensors are sealed, contain protective coverings and in normal conditions do not present a health hazard.
- Page 29 OMD-625 Oxygen Analyzer Annexures 5.3 Cont. Material Safety Data Sheet (MSDS) Reactivity Data Stability Stable Conditions Contributing to Instability None Incompatibility KOH = Avoid contact with strong acids or Acetic Acid = Avoid contact with strong bases Hazardous Decomposition Products KOH = None or Acetic Acid = Emits toxic fumes when heated...
- Page 30 OMD-625 Oxygen Analyzer Annexures Certificate of Conformance Model Number: OMD-625 Oxygen Analyzer Serial Number: ________________ Sensor Selection: ) TO2-133 Trace Oxygen Sensor ) TO2-233 Trace Oxygen Sensor CO2 > 0.1% ) TO2-238 H2S Resistant PPM Oxygen Sensor ) PO2-160 Percent Oxygen Sensor ) PO2-24 Percent Oxygen Sensor CO2 >...
- Page 31 OMD-625 Oxygen Analyzer Part 5 Annexures MODBUS RS485 RTU Bi-Directional Communication Protocol Contact Factory for Instructions Designed, Tested, and Assembled in California, USA 4045 E. Guasti Rd. #203 Ontario, CA 91761 USA : 1-949-398-2879 : sales@sso2.com : www.sso2.com...
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