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Southland OMD-525X, Инструкция по эксплуатации

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1.1 

General Introduction

The Southland Sensing OMD-525X Oxygen Analyzer is a microprocessor based online unit designed for 

continous measurements in a variety of 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

-

nents and materials which has resulted in an advanced design, excellent performance, and an overall 

low cost of ownership.

The analyzer has numerous options including PPM, Percent, and Purity oxygen analysis. The unit can 

be configured for VAC or VDC power input with an analog 4 - 20mA concentration output and digital 

RS485 Modbus ASCII output meeting most general purpose oxygen analysis applications.

Southland Sensing Ltd. appreciates your business and recommends reading through the complete 

manual to be able to get the full experience from your new oxygen analyzer.  

1.2 

Principle of Operation - The Oxygen Sensor

The precision electrochemical oxygen sensor used in the OMD-525X is designed and manufactured by 

Southland Sensing Ltd. under a strict quality procedure.

To understand how the oxygen analyzer functions, it is important to understand a little bit of the sen-

sor characteristics.  

The active components in the precision electrochemical oxygen sensor are the anode, cathode, and 

aqueous electrolyte which are all housed in the cell body. The oxygen molecules in the application 

pass through the front sensing membrane into the electrolyte, where a chemical reaction occurs and a 

raw electrical current is generated.  

This electrical current is proportional to the amount of oxygen in the application. The analyzer then 

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.

The oxygen concentration reading is then displayed in real time on the full backlit display and the user 

can automate the control of their process using the standard 4 - 20 mA concentration analog output 

signal which can be run to a PLC or other type of DCS system.  

Precision Electrochemical Oxygen Sensor

Introduction

OMD-525X Oxygen Analyzer

Designed, Tested, and Assembled in California, USA

4045 E. Guasti Rd. #203 Ontario, CA 91761 USA  :  1-949-398-2879  :  [email protected]  :  www.sso2.com

 

Содержание OMD-525X

Страница 1: ...gen Analyzer 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 Rev 1 00 June 19th 2022_DF Instruction Manual OMD 525X Oxygen Analyzer ...

Страница 2: ...he Controls and Their Operation 3 2 Setting the Date and Time 3 3 Manual Range Output Adjustment 3 4 Analog Output 4 20mA 3 5 Advanced Integral Alarms 3 6 Range ID 3 7 Selecting Sensor Type 3 8 Setting a Custom Range 3 9 USB Data Logging 3 10 Output Simulation 3 11 Output Calibration 4 1 Span Calibration Using Ambient Air 4 2 Span Calibration Using Certified Span Gas 4 3 Procedure for Replacing th...

Страница 3: ...manufactured by Southland Sensing Ltd under a strict quality procedure To understand how the oxygen analyzer functions it is important to understand a little bit of the sen sor characteristics The active components in the precision electrochemical oxygen sensor are the anode cathode and aqueous electrolyte which are all housed in the cell body The oxygen molecules in the application pass through t...

Страница 4: ...lyzer IP66 NEMA 4X Wall Mount Enclosure Trace Percent or Purity Configuration Precision Fuel Cell Oxygen Sensor Technology Measure Oxygen from 0 01 ppm to 100 Large Easy to Read Display Intuitive User Friendly Menu Interface Compact Indoor or Outdoor Enclosure Cost Effective and Low Maintenance Integral USB Data Logging Applications Inquiry for Application Expertise Nitrogen and O2 PSA Generators ...

Страница 5: ... TO2 2x PPM Oxygen Sensor Trace Analysis Acidic PO2 160 Percent Oxygen Sensor Percent Analysis Standard PO2 24 Percent Oxygen Sensor Percent Analysis Acidic PO2 1120 Purity Oxygen Sensor Percent Analysis Standard TO2 19 Hybrid Oxygen Sensor Percent or Trace Analysis Oxygen sensors should be periodically calibrated Factory recommendation is every 2 3 months or as the application dictates Sensors of...

Страница 6: ...nd alert the user that this device is operated on AC Voltage VAC READ INSTRUCTIONS Before operating the oxygen analyzer read the instructions RETAIN INSTRUCTIONS The safety precautions and operating instructions found in the owner s manual should be retained for future reference FOLLOW INSTRUCTIONS Observe all precautions and operating instructions Failure to do so may result in personal injury or...

Страница 7: ... and alert the user that this device is operated on DC Voltage VDC READ INSTRUCTIONS Before operating the oxygen analyzer read the instructions RETAIN INSTRUCTIONS The safety precautions and operating instructions found in the owner s manual should be retained for future reference FOLLOW INSTRUCTIONS Observe all precautions and operating instructions Failure to do so may result in personal injury ...

Страница 8: ...mount it too close to sources of electrical interference such as large transformers motor start contactors relays large pumps etc Also avoid subjecting the analyzer to significant vibration Mount the unit at a suitable eye level to easily read the local display Gas connections are located on the top right side of the analyzer ensure there is adequate room to hook up your gas lines 1 6 Safety Consi...

Страница 9: ...e contact the factory If damage to any portion of the new analyzer is present stop and report damage to the shipping com pany as well as the factory The 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 en tering the sensor housing Southland Sensing offers f...

Страница 10: ...gas and electrical connections Please refer to section 2 5 to reference installing the oxygen sensor into the sensor housing as well as sec tion 4 1 and 4 2 on SPAN Calibration When installing the analyzer it is important to make sure the unit is wall mounted standing upright This ensures the sensor is always facing down sensing surface down circuit board up to allow any air bub bles to not interf...

Страница 11: ...alyzer 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 Installation OMD 525X Oxygen Analyzer OMD 525X Mounting Dimensions Sizes are in mm and inches ...

Страница 12: ...power to either the ANALOG OUTPUT or RANGE ID as the circuit will be dam aged Follow your local electrical authority for proper procedure It is also recommended to make sure you have the proper seals for your condulet to meet your required installation consideration Check with your local electrical authority Designed Tested and Assembled in California USA 4045 E Guasti Rd 203 Ontario CA 91761 USA ...

Страница 13: ...ower to either the ANALOG OUTPUT or RANGE ID as the circuit will be dam aged Follow your local electrical authority for proper procedure It is also recommended to make sure you have the proper seals for your condulet to meet your required installation consideration Check with your local electrical authority Designed Tested and Assembled in California USA 4045 E Guasti Rd 203 Ontario CA 91761 USA 1...

Страница 14: ... 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 tab across the back of the sensor circuit board red tape Place the sensor inside the housing with the metal mesh screen facing down and the circuit board contacts facing up Return upper portion of the sensor housing to the stainles...

Страница 15: ... The UP DOWN buttons will allow you to select your set points and the ENTER button saves the data If you want to cancel your selection 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 O2 Levels Current Oxygen Reading Identifier Manual or Auto Range Operation OMD 525X Oxygen Analyzer Designed Tested...

Страница 16: ...ration OMD 525X Oxygen Analyzer MAIN MENU AUTO RANGE MANUAL RANGE SPAN CAL ZERO CAL SET TIME SET DATE CONFIG ALARM 1 CONFIG ALARM 2 LOGGING INTERVAL SYSTEM SET TIME 12 00 00 UP TO INCREASE DOWN TO DECREASE ENTER TO SAVE SET DATE 01 JAN 2022 UP TO INCREASE DOWN TO DECREASE ENTER TO SAVE To set the time or date start by pressing the MENU key to open up the onboard menu To set the time select the SET...

Страница 17: ... AUTO RANGE which will all the unit to cycle through all five ranges or MANUAL RANGE which will allow the user to select a specific range Decide which option will work best for your application Highlight the selection and press the ENTER key If you have selected the AUTO RANGE option it will blink for a second indicating this was selected If you selected the MANUAL RANGE option the following scree...

Страница 18: ... mA If a sensor is installed you can verify the signal matches with the following formula Signal Output mA Reading Full Scale Range x 16 4 For example if we are reading 500ppm on the 1000 ppm range Signal Output mA 500 1000 x 16 4 Signal Output mA 12mA The OMD 525X has a menu feature that allows the analog output to be adjusted to compensate for any internal resistance in the connection To adjust ...

Страница 19: ...rking on your process and do not want to have the alarm relay contacts trip You will set this in a similar fashion to setting the alarm The DELAY TIME is in minutes so adjust the value accordingly The alarm can also be enabled disabled should it be hooked up but not required Highlight ALARM ON OFF using the UP Down keys to and press the ENTER key The alarms can function as normally open or normall...

Страница 20: ... RANGE output on the rear of the analyzer To verify the signal output of the RANGE ID is working properly connect a voltmeter across the terminals to verify You can change the range manually in MANUAL RANGE mode to verify PPM Config Percent Config Output Range 1 0 10 ppm 0 1 1 VDC Range 2 0 100 ppm 0 5 2 VDC Range 3 0 1000 ppm 0 10 3 VDC Range 4 0 10000 ppm 0 25 4 VDC Range 5 0 25 0 100 5 VDC 3 6 ...

Страница 21: ...oll down to SYSTEM and press the ENTER button Scroll down to highlight SENSOR TYPE and press ENTER Select either PPM or PERCENT and press ENTER to set the range PPM configuration will correspond to use with a TO2 1x TO2 2x or TO2 19 sensor Percent configuration will correspond to use with the PO2 160 PO2 24 or PO2 1120 sensor Note Ensure that you are putting the correct sensor into the housing for...

Страница 22: ... com SYSTEM MENU OUTPUT SIM OUTPUT CAL MODBUS ID SENSOR TYPE CUSTOM RANGE 995 PPM UP INCREASE DOWN DECREASE ENTER TO CAL ESC TO EXIT Press the MENU button to go into the onboard menu Use the UP DOWN buttons to scroll down to SYSTEM and press the ENTER button Scroll down to highlight CUSTOM RANGE and press ENTER The value shown will be the upper value of the range in this case the custom range is g...

Страница 23: ...data in an csv file excel compat ible The data is stored in files by date and can be configured to save data at 1 minute intervals up to 120 minutes To select your data logging interval simply go into the MENU screen and select LOGGING INTERVAL this will prompt you to a screen where you can set the value by minutes Once selected press enter and your interval will be saved For data logging purposes...

Страница 24: ...tput Simulation Operation OMD 525X Oxygen Analyzer 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 3 101Output Calibration Contact the factory for more detail about calibrating the output on the OMD 525X ...

Страница 25: ...g Make sure the sensor screen of the oxygen sensor is facing the ground for optimum results Let the reading stabilize for about 30 45 seconds and then proceed to the following steps in the OMD 525X menu 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 Use the UP DOWN keys to adjust the reading on the...

Страница 26: ...section 2 4 of the users manual Once the gas is flowing let the reading stabilize for about 5 10 minutes and then proceed consider longer if sensor is still trending down very important when trying to calibrate with a low span gas such as 5 ppm o2 balance nitrogen SPAN CALIBRATION To calibrate the indicator press the MENU key and use the UP DOWN keys to highlight the SPAN CAL option and press the ...

Страница 27: ...he sensor Simply unscrew counter clockwise the collar Once free open the top portion of the sensor housing electronics module exposing the old oxygen sen sor Remove the old oxygen sensor disposing of it like you would a lead acid battery in accordance with your local regulations Remove the new sensor from its package and remove the red shorting strip Place the sensor screen side down in the sensor...

Страница 28: ... ap proximately 24 hours to stabilize the flowing gas There should be no downward trend of the reading Zero Calibration Procedure Zero Calibration should precede the span calibration and once performed should not have to be repeat ed with subsequent span calibrations The zero calibration should only be performed once as well as when a new sensor is installed or if changes are made to the sample sy...

Страница 29: ...cent Oxygen Sensor inert gas Replacement Parts PCB 525X MAIN Circuit Board for OMD 525X PCB 525X PS AC Circuit Board for OMD 525X Power VAC PCB 525X PS DC Circuit Board for OMD 525X Power VDC ORING 1001 Sensor Housing O ring For additional troubleshooting or replacement parts please contact the factory sales sso2 com Ph 1 949 398 2879 Annexures OMD 525X Oxygen Analyzer Designed Tested and Assemble...

Страница 30: ... serial number of this analyzer 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 will not pay for loss of time inconvenience loss of use or property damage caused by the oxygen analyzer sensor or its failure to work Exclusions This warranty does n...

Страница 31: ...rage Indefinitely Physical Properties Boiling Point Range KOH 100 to 115 C or Acetic Acid 100 to 117 C Melting Point Range KOH 10 to 0 C or Acetic Acid NA Lead 327 C Freezing Point KOH 40 to 10 C or Acetic Acid 40 to 10 C Molecular Weight KOH 56 or Acetic Acid NA Lead 207 Specific Gravity KOH 1 09 20 C Acetic Acid 1 05 20 C Vapor Pressure KOH NA or Acetic Acid 11 4 20 C Vapor Density KOH NA or Ace...

Страница 32: ...tal if swallowed KOH Oral LD50 RAT 2433 mg kg or Acetic Acid Oral LD50 RAT 6620 mg kg Eye Electrolyte is corrosive and eye contact could result in permanent loss of vision Skin Electrolyte is corrosive and skin contact could result in a chemical burn Inhalation Liquid inhalation is unlikely Symptoms Eye contact burning sensation Skin contact soapy slick feeling Medical Conditions Aggravated None C...

Страница 33: ... 0 10 0 25 0 100 Power 100 240 VAC Power 10 28 VDC Power Analog Output 4 20mA Concentration Output 1 5 V DC Range ID Output 4 20 mA DC Range ID Output Communication MODBUS RS485 ASCII Bi Directional Protocol Alarms 2 Integral Relay Contacts Display Backlight We certify that the parts shipped to you are manufactured in the USA and conform to all require ments of the Purchase Order These parts have ...

Страница 34: ...TA n charsData length will be filled depending on the message type ERROR CHECK 2 charsError check LRC END FRAME 2 charsCRLF The MODBUS ASCIILRC is calculated by adding all data fields together then negating or inverting the result for a 1s compliment then adding 1 for a 2s complement The starting colon and ending CR and LF are not included As an example command 6 to set OMD 525X unit 1 to 25 manua...

Страница 35: ... re turn the gas concentration in PPM regardless of the manual range setting The MODBUS command to read input registers is as follows 010400000004F7 Start byte 01 Device ID 04 Function Read Input Registers 00 1st Register High Byte 00 1st Register Low Byte 00 Number of Registers Hi Byte 04 Number of Registers Low Byte F7 Longitudinal Redundancy Check LRC Part 5 Annexures OMD 525X Oxygen Analyzer D...

Страница 36: ... 6C Hex A second example is Command 4 to read the gas concentration from MODBUS ID 2 The read command would be 020400000004F6 the response would be 0204040019529352 which would be returning 1952 93 PPM from ID 2 Start byte 02 Device ID 04 Function Read Input Registers 04 Byte Count Always 4 bytes 00 Data Byte Hi 1 19 Data Byte Lo 1 52 Data Byte Hi 2 93 Data Byte Lo 2 52 Longitudinal Redundancy Che...

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