Are there any good online analysis devices for CO2 and CO?

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Infrared and laser oscillations are commonly used. Water has an impact, and secondary water removal is required.

CO2 and CO are usually monitored online using infrared analyzers; several analysis manufacturers in China are engaged in this activity

As long as you spend more money, you can get anything; there’s nothing you can’t do, only things you can’t think of~

There are various methods available for monitoring the levels of carbon monoxide and carbon dioxide in flue gas or exhaust gases when burning occurs: Infrared gas analyzers can accurately measure the concentrations of CO and CO2, and they provide continuous analysis; however, moisture can cause interference, so a sample preprocessing system is necessary to remove water and dust； Laser gas analyzer: It can accurately analyze measurable amounts of CO and CO2; it provides continuous analysis, is less affected by moisture, and can be installed in flue ducts or gas channels ； Oxygen-type gas analyzer: It can accurately measure CO, CO2, and SO2, including oxygen; it offers high precision, but requires a high level of skill from the operator ； Chromatography: It can accurately analyze all gases present in a sample; sample pretreatment is required. This analysis method is not continuous, and the sample should also be dehydrated as much as possible.

The ABB AO2000 series of analyzers can be used, with infrared sensors such as those from victory:, but when designing the sampling system it is necessary to consider including water addition and removal devices

Infrared analysis requires high standards for water removal; when using infrared spectroscopy, water vapor will inevitably affect the accuracy of the measurements. For chromatographic analysis, water removal is also required, and pre-treatment for the pyrolyzer is quite challenging. For the measurement of constant levels of CO2 and CO, using semiconductor laser gas analyzers seems to be a better option; gaseous water has little impact on the measurements. Moreover, in cases where the sample gas contains high levels of dust and pre-treatment is difficult, in-situ analysis can be employed, which offers significant advantages in terms of cost and maintenance.

Using a laser is good – there is basically no need for maintenance.

Using the keywords “infrared analyzer for online monitoring of CO2 and CO” in Baidu yields many relevant results immediately.

For CO and CO2 infrared analyzers, if pre-treatment followed by infrared analysis is required, it is possible to contact manufacturers in China that produce such devices; for example, Xi’an Jueneng Instrument Co., Ltd. specializes in the production of oxygen analyzers, dew point meters, hydrogen analyzers, infrared analyzers, as well as various gas analysis systems. Phone: 13572466201