🧪 A Complete Guide to Oxygen Purity Analyzers and Electrochemical Sensors

Featuring Portable and Online Models + Envitec/Honeywell Galvanic Sensors

1. Overview of Industrial Oxygen Purity Analyzer Models

🔹 Online and Portable Models

✅ OMD-775 Online Oxygen Purity Analyzer – Southland Sensing Ltd

• Range: 0–100% with suppression capability in 90–100% range

• Resolution: 0.01%

• Output: Analog + MODBUS

• Sensor Type: Galvanic electrochemical with temperature and pressure compensation

• Use Case: Continuous oxygen purity monitoring in industrial settings

✅ OMD-740 Portable Analyzer – Southland Sensing Ltd

• Range: 0–100%, portable with USB data logging

• Housing: Rugged aluminum body

• Resolution: 0.01%

• Applications: Spot-checking oxygen purity in field operations

✅ Labideal GPR-3500 MO Portable Analyzer

• Unique Feature: The only portable model with a galvanic electrochemical sensor

• Range: 0–100%, Accuracy ~±2%, Response time ~13 seconds

• Target Market: Medical and industrial gas analysis

✅ Flygoo FG-OA Portable Analyzer

• Range: 21–99.9%

• Accuracy: ±1%

• Features: Multiple alarms, data logging

• Use Case: Medical oxygen monitoring and compliance checks

✅ Cape Golden CI-PC84 Online Analyzer

• Range: 10–99.99%

• Output: Analog signal + RS232 interface

• Display: LCD

• Accuracy: ±1%

• Use Case: Real-time monitoring of gas lines and PSA oxygen systems

2. Electrochemical Sensors by Envitec / Honeywell

Envitec’s electrochemical sensors are trusted for both medical and industrial applications. These include:

🔹 Popular Models:

OOM101 to OOM204-2
Lead-Free versions: OOMLF102(-1), OOMLF111

🔹 Certifications:

CE, ISO 13485, ISO 80601-2-55, RoHS

🔹 Applications:

• Anesthesia machines

• ICU ventilators

• FiO₂ calibration systems

• PSA/ASU oxygen production

• Gas quality monitoring in oxygen pipelines and cylinders

3. Role of Electrochemical Sensors in Oxygen Purity Analysis

Electrochemical (galvanic) sensors operate on redox reactions with oxygen. They generate an electric signal directly proportional to oxygen concentration.

🔹 Typical Applications:

• Medical breathing gases

• ICU, anesthesia, and ventilators

• FiO₂ monitoring

• PSA/ASU oxygen plant QA

• Continuous industrial oxygen monitoring

• Oxygen therapy and hyperbaric systems

• Semiconductor and glass production

• Scuba rebreathers and diving analyzers

🔹 Advantages:

• High accuracy and repeatability (±1% or better)

• Fast response time (T₉₀ ~6–15 seconds)

• Integrated pressure/temperature compensation

• Long operational life (>1,000,000 O₂-hours)

• Low maintenance and easy replacement

4. In-Depth: Envitec OOM111 Electrochemical Sensor

🔹 Key Specifications:

• Measurement Range: 0–100% O₂ at atmospheric pressure

• Output Signal: 11–13 mV in ambient air

• Accuracy: <3%, Repeatability <1%

• Response Time: <12 seconds

• Environmental Range: RH and pressure 0.6–2 bar

• Certifications: ISO 80601-2-55, CE, FDA, RoHS

• Connection: 3.5 mm mono jack

• Weight: ~28 g

🔹 Advantages:

• Fast and accurate readings for ventilators and anesthesia machines

• Compatible with major brands: Dräger, Philips, Hamilton, Mindray

• Ideal for portable or rugged medical environments

• Long life and minimal calibration needs

5. Popular Brands and Models Overview

6. Choosing the Right Device

For ventilator and anesthesia systems:

➡ Envitec OOM111, PIGEON-II, and AccuO₂ offer excellent compatibility and performance.

For oxygen production lines and pipelines:

➡ OxyData series and Cape Golden P950 provide advanced industrial features and connectivity.

For low-maintenance, long-lifespan analyzers:

➡ CANTA Analyzer is ideal for concentrator outlets and stationary setups.

✅ Envitec by Honeywell – A Global Leader in Oxygen Sensor Technology

Founded in Germany in 1991 and now part of Honeywell, Envitec is a top-tier manufacturer of electrochemical oxygen sensors and gas monitoring systems.

🔹 Specializations:

• Galvanic oxygen sensors

• Vital gas monitors

• Ventilator and anesthesia integrations

• Compact and portable medical analyzers

🔹 Highlights:

• Measurement Range: 0–100% O₂

• Accuracy: ±1% or better

• Response time: <12 sec

• Over 1,000,000 O₂-hours sensor life

• Plug & Play design

• Full compatibility with leading medical device brands

• ISO, CE, FDA, RoHS certifications

📈 Final Thoughts: Why Choose Envitec Oxygen Sensors?

Whether you’re a medical engineer, equipment manufacturer, or service technician, Envitec OOM sensors, especially OOM111, offer unmatched reliability, speed, and precision. With over 30 years of experience and strong global support from Honeywell, Envitec remains a top choice for respiratory and industrial oxygen monitoring.