Panametrics CGA 351 Oxygen Analyzer
Zirconium oxide oxygen analyzer determines O2 content in process gases
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- Fast, easy one-point calibration
- Low maintenance
- Measures oxygen from 0.1 ppm to 100 percent; Can measure oxygen in reducing gases
- Fast response (90 percent of step change in less than 1 second)
- Extremely stable sensor operation
- Months of trouble-free service; calibration checks or adjustments seldom required; one-point calibration is sufficient for entire range from ppm to percent oxygen
- Accuracy increases at low oxygen concentrations
The Panametrics CGA 351 oxygen analyzer utilizes an advanced zirconia sensor to accurately determine oxygen content in process gases. Microprocessor-based electronics allow the Panametrics CGA 351 oxygen analyzer to take measurements from ppm levels to 100 percent oxygen.
Applications for the Panametrics CGA 351 Oxygen Analyzer
The Panametrics CGA 351 oxygen analyzer is suitable for monitoring and/or controlling gas streams or atmospheres such as in air separation, heat treating, ceramic manufacturing, and other processes. For dirty or wet gas applications, a suitable sampling system may be required.
How the Panametrics CGA 351 Oxygen Analyzer Works
Sample gas enters the Panametrics CGA 351 oxygen analyzer's inlet port through a needle valve and flows into a ceramic inlet tube. It then flows through the annular space between the inlet tube and the inside of the zirconium oxide oxygen sensor, then out through the outlet port and a flowmeter. When there are no combustibles present in the sample gas, the analyzer measures total oxygen. Then combustibles are present, a platinum based catalyst, at the end of the ceramic tube, ensures that the sample reaches equilibrium before contacting the inner electrode. It is therefore possible to measure either oxygen excess or deficiency in air/fuel mixtures.
The Panametrics CGA 351 oxygen analyzer's zirconium oxide sensor is heated and closely controlled at 700°C (1292°F). As the sample contracts the inner electrode of the heated sensor, an electrical signal is generated, proportional to the logarithm of the ratio of the oxygen concentration in the sample gas to the oxygen concentration in a reference gas contacting the outer electrode. The Panametrics CGA 315 oxygen analyzer's electronics displays O2 in ppm or percent. It also displays other parameters including O2 sensor millivolts and sensor temperature in °C or °F. Ambient air is used as the reference gas on the outside of the electrochemical cell.
Trace O2 Applications
The full-featured Panametrics CGA 351 oxygen analyzer is typically used in applications such as:
- Air separation plants
- Glove boxes
- Semiconductor manufacturing processes
- Heat treat and metallurgical processes
- Glass and ceramic research
- Inert gas purity
- Blanket gas monitoring
- Medical research
- Gas blending
Special Applications for the Panametrics CGA 351 Oxygen Analyzer
- Welding atmospheres
- Gas generators
- Air/fuel mixtures
Here's how some of our customers used this product.
Monitoring Trace Oxygen in a Heat Treating Application
The Background: Our customer is a manufacturer. Part of their process involves heat treating metal to prevent oxidation. They require a means of measuring the amount of trace oxygen present in their heat treating process.
The Problem: It is very important that oxygen is removed from the heat treating process. Not only is the furnace filled with nitrogen to eliminate oxygen but the process will be shut down if oxygen beyond very minute levels is found during treatment. The oxygen analyzer must have a fast response time, high accuracy, and low maintenance requirements.
The Solution: We recommended the Panametrics CGA 351 oxygen analyzer which utilizes an advanced zirconia sensor to accurately determine oxygen content in process gases. The CGA 351 has a very fast response time of under 2 seconds for 90 percent of step change. It also features simple, one-point calibration which can be performed with a gas bottle in the field as well as an accuracy which increases at low oxygen concentrations.