Nitrogen plant is not installed because of nitrogen alarm system? Nitrogen gas is inert gas, there is no nitrogen sensor on the market, the general monitoring methods did not respond, basically measuring the oxygen concentration of oxygen alarm, I contacted Of the customers are basically all installed oxygen content detector, oxygen density slightly larger than the air, 0.6m from the ground to install it, installed oxygen alarm, oxygen detection alarm, the installation height of 0.6-2m (the height of the oxygen concentration to fit Normal human breathing). If it is flammable gas or toxic gas alarm, heavier than air, the installation height of 0.3-0.6m; lighter than air, the installation height of 0.6-2m. Under normal circumstances, nitrogen is measured by measuring oxygen content to indirectly reflect the nitrogen content, because the air is generally nitrogen and oxygen, nitrogen is an inert gas, not good test.
For closed purification plant, the oxygen alarm gas controller on the test site can be, although the gas controller is non-explosion-proof structure, the detection of oxygen, there is no explosion-proof zone and non-explosion zone, so for the enclosed space, the gas control On the test site can be.
For the detection of oxygen, the quality of oxygen and air is almost, when installed, the installation of oxygen detectors with human height can be about the same, the detector sensor down, the oxygen detector is mainly used to detect over-leakage of oxygen concentration on-site.
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