- Home
- Companies
- Southland Sensing Ltd.
- Products
- Southland Sensing - Model OMD-690 - ...
Southland Sensing - Model OMD-690 -Explosion Proof Online Trace Oxygen Analyzer, CE
The OMD-690 Explosion Proof Oxygen Analyzer is designed to measure trace oxygen in the parts-per-billion range / sub 1 ppm region but can also be used to measure oxygen up to 1000 parts-per-million. The unit combines an advanced set of electronic features including a smart MENU interface including our innovative touch glass technology with our industry leading leading precision electrochemical oxygen sensor technology. The result is a highly reliable and cost effective design with easy-to-use user interface for petrochemical and chemical applications.
- Enclosure Type: Explosion Proof Wall Mount
- Available Ranges: 0 – 1/10/100/1000 PPM & 0 – 25%
- Range Mode: Auto-Range or Manual Range
- Resolution: 0.001 PPM
- Input Power: 100 – 240 VAC
- Analog Output: 4 – 20mA, 0 – 10V DC, 0 – 1V DC
- Communication: Bi-Directional MODBUS RS485 RTU
The built in smart MENU interface allow the user to fully configure the analyzer through the onboard MENU system. No need for a complicated laptop or other control device to setup the analyzer in the field.
Alarm functionality comes in the way of 2 fully adjustable form C non-latching relay contacts. These can be configured as NO or NC and can be set as HIGH or LOW with optional delay mode. A power failure alarm is also standard and comes as a form C non-latching relay contact.
The analyzer is designed as an extractive type unit to draw the sample through its integrated sample system which includes a bypass / isolation valve, flow needle valve and a visual rotameter / flowmeter.
The standard cell (TO2-133) is unaffected by other background gases such as hydrogen, helium, or hydrocarbons. The optional acidic cell (TO2-233) works well when acid gases such as CO2 or Natural Gas are present. All oxygen sensors are manufactured in house by Southland Sensing Ltd. under a strict ISO9001:2015 / ISO13485:2016 quality system.
The sensors are self-contained and minimal maintenance is required – no need to clean electrodes or add electrolyte.
Designed to measure trace oxygen in the sub 1 ppm region (Parts-Per-Billion, Parts-Per-Million & Percent Oxygen Values) in a Class 1, Division 1 groups B, C, D hazardous area environment. The unit combines an advanced set of electronic features including a smart MENU interface along with our industry leading precision electrochemical oxygen sensor technology. The result is a highly reliable and cost effective explosion proof analyzer with an easy-to-use user interface.
Specific applications typically include continuous monitoring of chemical, petrochemical and offshore processes.
- 0 - 1 PPM Low Range; 0 - 25% High Range
- Resolution of 0.001 Parts-Per-Million Oxygen
- Sample/Span Valve and Flow Meter
- Bi-Directional Communication Link
- Intuitive Touch Glass Menu Interface
- Fully Explosion-Proof Enclosure
- Electrochemical Sensor Technology
- Configurable Alarm Relay Contacts
- Chemical & Petrochemical Processes
- Natural Gas Processing
- Hydrocarbon and Hydrogen Processing
- Offshore Oil & Natural Gas Platforms
- Accuracy: < +/- 1% of Full Scale Range*
- Alarms:
- (2) Adjustable Relay Contacts
- (1) Power Fail Relay Contact
- Analysis Range: Various (See Ordering Guide)
- Calibration: Periodically
- Communication:
- Bi-Directional MODBUS
- RS485 ASCII
- Dimensions: 19.5” x 13.5” x 9.0”
- Display: Large with Backlight
- Area Classification: Class 1, Div 1, Groups B, C, D
- Sensor Enclosure Certification: EEXd d IIB+H2 T6
- Flow Sensitivity: 0.5 - 5 SCFH
- Gas Connections: Various (See Ordering Guide)
- Output (Analog):
- 0 - 1V DC, 0 - 10V DC
- Isolated 4 - 20mA
- Power: 100 - 240 VAC
- Pressure: Inlet, 0 - 50 PSIG
- Range ID:
- 4 - 20 mA analog output
- 0 - 1 V DC analog output
- Repeatibility: < +/- 1% of reading
- Response Time: T90 in 10 Seconds
- Sample System: Flow Meter, 3-way Sample / Span Valve
- Sensor: Various (See Ordering Guide)
- Temperature: 0 - 50 deg C
- Temperature Compensation: Digital
- Warranty: 12 months Analyzer & Sensor
- Weight: 47 lbs
- *Accuracy at constant conditions
Oxygen Analyzer:
The model OMD-690 oxygen analyzer combines a rugged design with SSO2’s precision oxygen sensors. The result is a highly reliable and cost effective design with easy-to-use user interface designed specifically for the petrochemical and chemical industries.
The oxygen analyzer is designed to meet standards for Class 1, Div 1, Groups B, C, D installation.
The oxygen analyzer is isolated both on the power input and analog output. This eliminates most electronic gremlins seen with existing competitive equipment in the field.
Standard ranges include: 0 - 1ppm, 0 - 10ppm, 0 - 100ppm, 0 - 1000ppm, 0 - 25%.
Optional PPM Analysis Ranges: 0 - 10ppm, 0 - 100ppm, 0 - 1000ppm, 0 - 10000ppm, 0 - 25%.
Optional Percent Analysis Ranges: 0 - 1%, 0 - 5%, 0 - 10%, 0 - 25%, 0 - 100%.
Custom Range: The unit comes with the ability to customize a 6th range (i.e. 0 - 94.0 ppm).
Standard Power Requirements:
- Input Power: 100 - 240 V AC
- Current Draw: 500 mA
** Optional power input choices available
Oxygen Sensor Technology:
The oxygen sensor used in the OMD-690 is based on the galvanic electrochemical fuel cell principal. All oxygen sensors are manufactured in house by Southland Sensing Ltd. under a strict quality program.
The standard cells are unaffected by other background gases such as H2, He or Hydrocarbons. The acidic cells work well when acid gases such as CO2 or natural gas are present. H2S resistant sensors are available for sour gas streams with <500 PPM H2S.
The sensors are self-contained and minimal maintenance is required - no need to clean electrodes or add electrolyte.
The SSO2 precision oxygen sensors offer excellent performance, accuracy and stability while maximizing the expected life.
Oxygen Sensors:
- TO2-133 PPM Oxygen Sensor: Trace Analysis, Standard
- TO2-233 PPM Oxygen Sensor: Trace Analysis, Acidic
- TO2-238 PPM Oxygen Sensor: Trace Analysis, < 500PPM H2S
- PO2-160 Percent Oxygen Sensor: Percent Analysis, Standard
- PO2-24 Percent Oxygen Sensor: Percent Analysis, Acidic
Oxygen sensors should be periodically calibrated. Factory recommendation is every 2 - 3 months or as the application dictates. Sensors offer excellent linearity with an air calibration, or calibrate to a certified span gas to maximize accuracy.