Portable laser ammonia analyzer

Product Details

For the measurement of ammonia escape,The emission limit of 3ppmv poses a great challenge to the performance of the instrument, and the vast majority of existing near-infrared laser ammonia escape instruments cannot achieve reliable accuracy under on-site operating conditions. In addition, the measurement environment of SCR outlet flue is very harsh. Traditional in-situ through type laser ammonia meters are affected by dust and the light cannot penetrate. At the same time, the pipeline will randomly load and undergo thermal expansion due to temperature, resulting in laser light deviation and signal loss, which increases the maintenance cost of the instrument.

Recently, some products have utilized extractive sampling+Near infrared laser+long path absorption cell technology uses long path to compensate for the weak absorption of near-infrared spectral lines of ammonia molecules. However, due to the addition of precision optical components such as long path absorption cells, it is not suitable for harsh working conditions such as high dust, high temperature, and high ammonium salt at the denitrification outlet. After long-term operation, the cleaning and alignment of the precision optical path pool greatly increase the difficulty and cost of maintenance.

Product advantages:

Anti interference and high precision:We choose the absorption spectrum of ammonia in the mid to far infrared band, which is not affected byH2O、SOXTheCOXTheCXHYTheNOXWaiting for molecular cross interference.

No need for on-site dimming correction:MIR-SHORTTMUltra short path gas absorption cells avoid frequent maintenance of light, and the optical mechanical structure is not affected by thermal induced deviations in high-temperature environments.

• High reliability and easy maintenance:The absorption tank has high light efficiency, and industrial flue gas with high dust and high salt alkali crystallization does not affect the accuracy of the system. And avoid the high maintenance requirements of precision equipment such as long path multiple emission absorption tanks.

• Small direct measurement error:The direct measurement of ammonia molecule spectra ensures high accuracy, without the conversion rate issue of indirect analysis techniques in the pre-processing system.

Low comprehensive operation and maintenance costs:The preprocessing system is simple, with full process hot and wet heat tracing sampling, without the need for additional processes such as condensation dehydration, conversion furnace, dilution sampling, etc.

Product Parameters:

Product testing curve chart:

Technical comparison test:

We use a commercial near-infrared laser ammonia analyzer (blue dashed line,NIR) andQM-NH3Mid infrared ammonia analyzer analysis (black dashed line,MIR conducted a comparative test, and the test results are shown in the following figure: it can be clearly seenQM-NH3Has faster response time and more accurate measurement results. The response time of near-infrared instruments is approximately85 seconds, with a maximum deviation of 62.5%, while our instrument has a response time of about 30 seconds and a maximum measurement deviation of 1.7%. (See attached image)

Sampling accessories:

QM-NH3 compatible withSmartlineTMOr JPESTMPortable hot and wet sampling probe and heat tracing pipeline. If the customer needs it, we can order Smartline for themTMOr JPESTMAccessories.(Note: Additional purchase required)

Interface and Dimensional Diagram: