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Ongoing, First published Jan 28, 2021
A physical online gas analyzer. According to the principle that different gases have different heat conductivity, the content of some components in the mixture can be calculated by measuring the thermal conductivity of the mixture. This kind of online gas analyzer is simple and reliable, suitable for many kinds of gas, and it is a basic gas analyzer equipment. However, it is difficult to directly measure the thermal conductivity of gas, so in fact, the change of thermal conductivity of gas is often converted into the change of electrical resistance, and then measured by electric bridge. There are two kinds of thermistor elements in the thermal online gas analyzers: semiconductor sensitive element and metal resistance wire. Semiconductor sensor has small volume, small thermal inertia and large resistance temperature coefficient, so it has high sensitivity and small time lag. https://www.zetian-group.com/products/em-5-flue-gas-analyzer/All Rights Reserved
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