Regarding analyzer issues
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This post was last edited by A Grain of Sand in the Desert on 2011-12-9 09:17 to analyze the purity of liquid oxygen (paramagnetic oxygen) using XENTRA-4101/PURITY； XENTRA-4100/ZR704 for analyzing trace oxygen purity (zirconia) ； These two analyzers are located in the same enclosure outdoors: they have two sampling ports, one for analyzing the oxygen content in liquid oxygen and the other for analyzing the oxygen content in liquid nitrogen ； Recently, some abnormal conditions have occurred: the oxygen content in liquid oxygen is above the specified range, and the oxygen content in liquid nitrogen is very high (these issues arose almost simultaneously) ； Moreover, the oxygen content in liquid nitrogen is very unstable at present, remaining at relatively high levels almost all the time ； The temperature has been changing a bit lately; it’s around 1 degree these days. Does the external temperature have such a big impact on the analyzer? I hope friends who know something about this can offer some help! ! Thank you so much! !
I. Under normal operating conditions, check whether the sampling pipeline of the analyzer is affected by external ambient temperatures and whether there are any leaks； II. First of all, the influence of changes in external environmental temperature cannot be ruled out ； By design, analyzers are equipped to measure temperature differences and pressure differences of the medium being measured. III. Check the zero point and range of the analyzer, and conduct tests using standard gases ；
1.3 has been done; there’s no problem. As for the second point, I’m not sure how to resolve it. Since the analyzer is chosen to be installed outdoors, environmental factors need to be taken into consideration; however, it seems that environmental factors do have an impact on the analysis results