Series 3520

Portable Trace Oxygen Analyzer

Unmatched Technology & Value

Portable, Battery-Operated Trace Oxygen Analyzer with Long-Life Sensor

Our ALPHA OMEGA INSTRUMENTS™ Series 3520™ Portable Trace Oxygen Analyzer is battery-operated and designed for industrial and commercial applications where accurate and reliable spot trace oxygen measurements are needed. The Series 3520 Portable Trace Oxygen Analyzer features long life ambient temperature electrochemical sensor. The enclosure is made from durable polycarbonate and is rated NEMA 1 for general purpose service. The instrument is powered from rechargeable NICAD batteries that are mounted internal to the analyzer.

Recharging of the batteries is accomplished using a built-in battery charger with a universal AC adapter. Single measurement ranges are available from 0-10 PPM to 0-20,000 PPM with values displayed on a front panel liquid crystal display (LCD). Options include pressure regulators, flow meters, in-line filters, pumps, and block & bleed bypass sampling systems.

Long life ambient temperature electrochemical sensor.
Enclosure is made from durable polycarbonate and is rated NEMA 1 for general purpose service.
Powered by a rechargeable NICAD batteries that are mounted internal to the analyzer.
Recharging batteries is accomplished using a built-in battery charger with a universal AC adapter.
Single measurement ranges are available from 0-10 PPM to 0-20,000 PPM with values displayed on a front panel liquid crystal display (LCD).
Options include pressure regulators, flow meters, in-line filters, pumps, and block & bleed bypass sampling systems.

High Performance Trace Oxygen Sensor

The Series 3520 Trace Oxygen Analyzer features our long-life ambient temperature electrochemical sensor that has a functional life of up to three times that of most “fuel cell” type sensors. The enhanced mechanical design of the sensor ensures longer life, and virtually eliminates leakage of caustic electrolyte, a nagging (and expensive) problem associated with sensors that require periodic electrolyte maintenance. And, because the sensor is sealed, it is not position sensitive. In addition, unlike ome electrochemical sensors, the readings from the Series 3520 do not require manual adjustment based on changes in the molecular weights of the sample gas i.e. helium, hydrogen, etc. a major advantage for continuous measuring applications. The output from the sensor is both
linear and temperature compensated to provide optimum performance.

NOW FEATURING A CO₂ RESISTANT SENSOR

A nemesis for many conventional “fuel cell” type trace oxygen sensors are their inability to measure oxygen in gases containing carbon dioxide. Carbon dioxide reacts with potassium hydroxide electrolyte to form carbonic acid and in short time destroys the sensor. Not anymore. We offer an optional CO₂ tolerant trace oxygen sensor with proprietary electrolyte. The CO₂ tolerant sensor is capable of providing accurate oxygen readings in gases containing up to 100% CO₂ without shortening the life of the sensor.

INDUSTRIES
Here are some of the industries that use the Series 3520 Portable Trace Oxygen Analyzer:
- Oil and Gas: Used in the oil and gas industry to monitor oxygen levels in refining and processing operations.
- Chemical: Used in chemical plants to monitor oxygen levels in production processes.
- Pharmaceutical: Used in the pharmaceutical industry to monitor oxygen levels in production processes.
- Food and Beverage: Used in the food and beverage industry to monitor oxygen levels in packaging and storage environments.
- Research and Development: Used in research and development applications to study the effects of oxygen levels on various materials and processes.
FEATURES
- Long Life Trace Oxygen Sensor: Provides up to three times the functional life of most “fuel cell” type sensors. Reliability is dramatically increased while maintenance costs are reduced.
- Sealed Sensor: Eliminates handling potassium hydroxide (caustic), a hazardous material or having to frequently “recharge” the electrolyte.
- CO2 Resistant Sensor: Optional CO₂ resistant sensor is designed to operate with sample gases containing up to 100% CO₂. Conventional “fuel cell” type sensors using potassium hydroxide (KOH) electrolyte can be poisoned from CO₂.
- Affordable: Affords savings of up to 30% and more over other manufacturers trace oxygen transmitters.
- Wide Measurement Range: Measure from under 1 PPM to as high as 20,000 PPM oxygen.
- Factory Calibration: A factory Certificate of Performance Verification and Calibration is included at no additional charge. The product performance is verified in accordance with manufacturing specifications using a National Institute of Standards and Technology (NIST) traceable transfer calibrated standard gas mix.
- NEMA 4 Enclosure Greater installation flexibility with a dust and waterproof enclosure.
PERFORMANCE
- Measurement Ranges (parts per million) 0-10, 0-50, 0-100, 0-200, 0-500, 0-1,000, 0-5,000, 0-10,000, and 0-20,000
- Accuracy¹: + 1% of full scale. ¹Stated at constant temperature and pressure
- Linearity: + 1% of full scale.
- Response Time: 90% of full-scale response in less than 10 seconds (typical). The response time for ranges of 0-50 PPM or less depend to a great extent on the design of the sample delivery system including the materials used.
- Sensor Type: Long-life Ambient Temperature Electrochemical Sensor (Optional CO₂ Resistant Sensor Available).
- Temperature Compensation: Standard.
- Operating Temperature Range: 40° to 104° F (5° to 40° C)
- Warranty: Two years electronics one year sensor.₂ tolerant sensor is capable of providing accurate oxygen readings in gases containing up to 100% CO₂ without shortening the life of the sensor.
CONSTRUCTION
- Enclosure: Polycarbonate rated NEMA 1.
- Dimensions: 6.5 inches (165.1 mm) height 6.5 inches (165.1 mm) width 7.8 inches (196.9 mm) height Note: All dimensions are without optional equipment
- Gas Connections: 1/4″ stainless steel compression fittings.
SAFETY

We Care About Safety

If you are concerned over unsafe levels of oxygen explore a complete line of oxygen deficiency monitors and accessories. We supply many instruments to medical, aerospace, and municipalities. Occupational Safety and Health Administration (OSHA) defines an oxygen deficient environment when oxygen levels fall below 19.5 percent. Oxygen deficient environments require accurate and reliable instrumentation. Oxygen levels below 16% is dangerous to human life.

Explore why safety monitoring matters.
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SERVICE

Need service on your oxygen analyzer? No problem. We are ready to assist you with any technical or service-related inquiries. Just complete our Oxygen Monitor RMA.

OUR GLOBAL SOLUTIONS DELIVER

Improved reliability
Lower cost of ownership
Improved product quality
Efficiency
Meet compliance requirements
Backed by global service and support

Process Insights is committed to solving our customers’ most complex analytical and process challenges.

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Need service or calibration for your oxygen analyzer? No problem. We are ready to assist you with any technical or service-related inquiries. Just complete our Oxygen Monitor RMA.