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test principleThe humidity measuring instrument can be divided into cold mirror type, fully absorption electrolysis type, Al2O3 capacitance type, thin film capacitance type, resistance type, dry wet ball type and mechanical type. Among them, the fully absorption electrolytic micro-water meter and Al...
2020
05
20
In the conventional monitoring of flue gas emission, flue gas humidity is an important parameter, and it is also the most difficult to measure accurately. Humidity measurement itself is affected by other factors (atmospheric pressure, temperature), flue gas humidity measurement also needs to face hi...
2020
04
17
Introduction and application development of flue gas online high temperature and humidity analyzerForewordThe measurement of flue gas humidity in the exhaust gas of fixed pollution source is mainly to obtain dry-based oxygen content to calculate the actual content of flue gas and gaseous pollution e...
2020
04
17
1. Cold mirror dew point meterGases with different water content will come to the surface at different temperatures. The dew point is directly displayed by the photoelectric detection technology, which detects the dew layer and measures the temperature when the dew is exposed. The methods of mirror...
2020
04
16
1.Calibration①The analyzer must be preheated to thermal stability before calibration (note: The instrument must be preheated with ventilation, otherwise the components will be burned).②The thermal conductivity of the background gas in the standard gas should be consistent with that of the measured g...
2020
04
16
Thermal conductivity of gasThe thermal conductivity gas analyzer is an instrument for analyzing the gas composition by measuring the thermal conductivity of mixed gases according to the different thermal conductivity of various substances. It is well known that there are three basic ways of heat tra...
2020
04
16
1.The supporting pipeline of the analyzer should ensure the sealing, and the small leakage will cause the oxygen in the ambient air to diffuse in, thus making the measurement value higher.Although the sample gas pressure is higher than the ambient pressure, the oxygen in the sample gas is a micro-le...
2020
04
16
Classification of gas sensorsThe national standard GB7665-87 defines sensors as: The sensor is a device or a device capable of sensing a prescribed measurement and converting it into an available output signal according to a certain rule. Gas sensor is used to detect the composition and content of t...
2020
04
16
1.Why can't the instrument be checked immediately after being put into use?Answer: This is because the indication is abnormal within 24 hours after the cold machine is put into operation, and the calibration is carried out by standard gas after being put into operation for one day. This is becau...
2020
04
16
Structure type and working principle of zirconia oxygen probeAccording to the different detection methods, zirconia oxygen probes are divided into two categories: sampling detection oxygen probe and direct-inserting oxygen probe.1.Sampling detection type oxygen probeThe sampling detection mode is th...
2020
04
16
The accuracy of on line instrument is generally higher, so the requirements of environmental factors are higher than other analytical instruments. But generally speaking, there are three main aspects:1. Pressure: Each kind of analysis instrument, especially the gas analysis instrument will have the...
2020
04
15
Process flow and pollution generation analysis of polysiliconHydrogen preparation and purification processHydrogen is produced in an electrolytic cell by electrolysis desalination. The hydrogen produced by electrolysis is cooled and separated by liquid, then enters into deaerator, under the action o...
2020
04
14
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