What is the maximum sample inlet pressure?
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For additional questions, please contact Technical Support.
Q: What is the effect of moisture on the nitrogen reading?
A: Without Teledyne's moisture trap, interference due to moisture is expected to reduce the nitrogen reading by approximately 4% of the reading for every ppm of moisture in the stream. With Teledyne's moisture trap installed, there will be no interference.
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Q: Can the analyzer be powered without flowing Argon sample gas?
A: It is not recommended to keep the unit powered without flowing sample gas. It is possible detector damage could occur.
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Q: Can oxygen or other impurities interfere with the nitrogen measurement?
A: Although the plasma emission detector for the 2120XL is nitrogen-selective, other compounds including nitrogen may introduce some small positive or negative interference. The interference is non-linear over the analyzer's ranges and may be depending on the impurity and concentration.
Here is an example of interferences contributed by the impurities of a gas containing 10 ppm nitrogen, 10 ppm hydrogen, 10 ppm oxygen, 10 ppm methane and 10 ppm carbon monoxide in an argon background:
Impurity | Contribution to Reading | % of Nitrogen Response
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Nitrogen | 10 ppm | ---
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Oxygen | 0.35 ppm | 3.5% |
Hydrogen | -0.2 ppm | -2.0% |
Methane | -0.175 ppm | -1.75% |
Carbon Monoxide | 0.175 ppm | 1.75%
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Q: What is the maximum sample inlet pressure?
A: 30 psig, although it is recommended not to exceed 20 psig for the analyzer to properly control flow rate.
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