With more than 50 years of history, Decto is the world's largest portable instrument manufacturer. While enjoying the reputation of "Measurement Expert", Detu has always been actively developing new products based on the needs of the market and customers. In the past two years, we have found that SO2 measurement after wet desulfurization is a typical problem in flue gas measurement in the past two years. The reason is that the humidity of the gas after the wet desulfurization is high (to saturation humidity), the temperature is low, and the SO2 is low. These factors are the problems that need to be solved urgently in the SO2 gas measurement. In order to effectively solve these problems in the measurement, Detu grand launched a new measurement solution for the wet desulfurization export, namely "new patented special low SO2 sampling probe". As its name suggests, this sampling probe has successfully applied for patented technology in the Chinese market. The new revolutionary measurement program Detu is committed to the slogan of the future and the principle of providing users with the best measurement solutions. After one year of research and development, it finally launched a "new patented special low SO2 sampling probe" in August 2010. The introduction of this technology greatly simplifies the measurement of SO2 gas in high-humidity, low-sulfur environments. Only one "new patented special low SO2 sampling probe" with the appearance similar to an ordinary sampling probe can quickly, conveniently and accurately measure SO2 in a high-humidity, low-sulfur environment anytime and anywhere. The length of the probe is 700mm, and its standard probe length and weight are basically the same as those of ordinary probes. Equipped with a standard 2.2m sulfur-resistant sampling tube, the highest temperature +200 °C. The entire measurement system does not require the use of AC power. It is easy to measure, responds quickly, and guarantees measurement accuracy.
Advantages of the new measuring solution upgrade In June 2009, Detuo responded to the SO2 measurement in a high-humidity, low-sulfur environment: the fully heated testo 350 PRO/XL, the standard testo 350 PRO/XL main unit plus full heating sampling System, which contains a hot sampling tube (heating temperature +180 °C), heating handle (heating temperature +180 °C), and full heating sampling hose (up to +200 °C, in line with HJ/T397-2007 standard). This full-heating measurement scheme consists of heating the measured gas in the gas pipeline, followed by pretreatment of filtration, dehumidification, and gas-liquid separation to prevent the moisture in the sample gas from condensing in the connecting tube and instrument.
First of all, in terms of price, the new system eliminates the need for a huge heating sampling section and it does not need to provide AC power, which is more economical while saving energy. At the same time, the sampling of the new measurement and measurement system requires no heating and fast response, which greatly saves time. In terms of weight, it is also extremely lightweight and portable. It is worth mentioning that the new measurement system has undergone multiple comparison tests and the measurement results are completely consistent with the full heating system.
The testo 350 PRO, equipped with a new patented special low SO2 sampling probe, is measured at the back end of the wet desulfurization spray at the Niederaussem power plant in Germany.
The experimental results are: testo 350PRO with new patented special low SO2 sampling probe, short time measurement can not use AC power supply, and the reading error with the online or reference optical instrument can reach ± ​​2 ppm. At the same time, the test results also It is indicated that the accuracy is not affected even in the case of the sulfur-resistant tube length (10 meters) and the measurement duration (22-hour continuous measurement).
Afterwards, the testo 350PRO again went to the same test in two power plants in Zhejiang, and the optical online continuous monitoring system of the two power plants also had an error of ±2 ppm. Using the new patented special low SO2 sampling probe can achieve rapid and accurate And reliable measurement.
It can be seen that the SO2 measurement solution under the new high humidity and low sulfur environment not only meets the flue gas measurement and analysis in special environments, but also improves the deficiencies in the original measurement system, providing customers with effective, convenient, and reliable measurements. A major revolution in measurement systems. Because Detu is always upholding the needs of its customers, it is constantly pursuing innovation and perfection, and working with customers to the future.