What is anOnline Oxygen Analyzer and what is its primary function in industrial applications?
Online Oxygen Analyser are designed for accurate and reliable measurement of Oxygen in Air, Nitrogen, Argon, Hydrogen etc. These are based on state of art Galvanic Oxygen Sensors and provide fast response. They require no periodic maintenance like replacing electrodes or electrolyte and can be calibrated using ambient air or standard calibration samples.Keep Controlling Oxygen Level In Air Separation Plants. Checking Cylinder Gas Quality. Pharma & Food Industries. Purge Gas Monitoring.
What are the primary applications of an Online Oxygen Analyzer in various industries?
Oxygen analyzers are extremely important for various applications, including:
Landfill gas, Biogas, Syngas. Though different, in order to work, each of these processes require an absence of oxygen. These processes produce combustible gases that can be used for energy production.
Gas Plants, Transmission Lines, and Gathering Systems. The presence of oxygen in gas plants, gathering systems, and transmission lines can be dangerous, as it may indicate a leak in the infrastructure that can cause significant damage if not sealed. Oxygen analyzers help workers detect these problems more rapidly.
Industrial Processes. In industries ranging from aerospace to electronics, the continual monitoring of oxygen levels helps companies maintain an efficient and safe manufacturing process, particularly when introducing nitrogen gas during production.
What are the types of Online Oxygen Analyzer?
Online oxygen analyzers include paramagnetic, zirconia, and inert gas analyzers. They can be used to measure the concentration of oxygen in gas flows.
Types of oxygen analyzers
Paramagnetic analyzers: These analyzers are robust and fast and can be used with flammable gas mixtures. They don’t require heat, and there’s no contact between the detection sensor and the gas.
Zirconia oxygen analyzers: These analyzers are a direct method of measuring oxygen.
Inert gas oxygen analyzers: These analyzers are based on galvanic oxygen sensors, and they provide a fast response. They don’t require periodic maintenance and can be calibrated using ambient air.
What are the common maintenance procedures for Online Oxygen Analyzer to ensure they function correctly?
Check and Confirm analyzeroperate within specified temperature and humidity limits.
Regularly monitor and adjust environmental conditions as needed to maintain optimal performance.
Thoroughly inspect analyzer exterior for any accumulation of debris or dust.
Utilize appropriate cleaning tools, such as a cloth or brush, to gently remove debris from surfaces and openings.
Evaluate surroundings for potential sources of interference, including electromagnetic fields, vibrations, and temperature fluctuations.
Take proactive measures to minimize or eliminate interference effects, such as relocating nearby equipment or installing shielding.
Continuously monitor environmental conditions to ensure ongoing stability and accuracy of analyzer readings.
How can Online Oxygen Analyzer be tested to ensure they are working properly and within specifications?
Perform a calibration procedure using certified span gas that closely matches the expected oxygen concentration range of your process, alongside checking for stable readings, response time, and comparing the measured values against known standards, while also monitoring for any potential interference from other gases or environmental factors.
Key steps involved in testing an online oxygen analyzer:
Zero Calibration:
Use a zero gas (typically nitrogen) to set the analyzer’s baseline reading to zero.
Span Calibration:
Introduce a certified span gas with a known oxygen concentration (usually around 80% of the measurement range) to adjust the analyzer’s output to match the correct value.
Stability Check:
Monitor the analyzer output over a period of time while supplying a constant oxygen concentration to ensure minimal drift.
Response Time Test:
Rapidly change the oxygen concentration of the sample gas and observe how quickly the analyzer responds to the change.
Accuracy Verification:
Compare the readings from the analyzer against a reference standard (if available) to confirm accuracy within the specified tolerance.
What safety considerations should be taken into account when installing and operating Online Oxygen Analyzer?
- To ensure that this equipment is used correctly and safely, be sure to follow the precautions given below.
- This testing instrument is designed to be installed indoors. While installing the o2 analyzer, you should not place it where the instrument is exposed to direct sunlight.
- Whenever you install this testing equipment, then you should make sure that there will be no vibrations and shocks will be there.
- Do not install this testing instrument where there is a lot of oil, smoke, moisture, and other corrosive gases.
- You should avoid installing it near an electromagnetic field source.
- When disposing of the packing material, oxygen analyzer, and its parts, be sure to follow the instructions of each local government and dispose of them properly so that they do not become a source of environmental pollution.
What are the common failure modes of Online Oxygen Analyzer and how can they be mitigated?
Common failure modes of an online oxygen analyzer include: sensor fouling (build-up of contaminants on the sensor surface), calibration drift, membrane damage, interference from other chemicals, temperature fluctuations, air bubbles in the sample stream, improper installation, and lack of regular maintenance; these can be mitigated by regularly cleaning the sensor, proper calibration procedures, maintaining stable temperature conditions, ensuring proper sample flow, and following manufacturer’s guidelines for installation and maintenance.
Breakdown of common failure modes and mitigation strategies:
Sensor Fouling:
Cause: Accumulation of contaminants like solids, oils, or chemicals on the sensor surface, hindering oxygen diffusion.
Mitigation: Regular cleaning with appropriate cleaning solutions, following manufacturer’s instructions.
Calibration Drift:
Cause: Gradual change in sensor response over time due to aging or environmental factors.
Mitigation: Regular calibration with certified standards, following a proper calibration schedule.
Membrane Damage:
Cause: Physical damage to the sensor membrane, which allows unwanted substances to interfere with the measurement.
Mitigation: Handle the sensor carefully, avoid harsh chemicals, replace the membrane when necessary.