Detection principle of chemiluminescence nitrogen analyzer
The chemiluminescence nitrogen analyzer (SH708) adopts the principle of chemiluminescence detection. After the sample of nitrogen content to be measured (or the standard sample) is introduced into the high-temperature cracking furnace, the sample is completely vaporized and oxidized under the high temperature of about 1050℃, and the nitrogen compounds are quantitatively converted into nitric oxide (NO). The reaction gas is carried by carrier gas, which is removed by magnesium perchlorate dryer to enter the reaction chamber. Metastable nitric oxide reacts with O3 gas from ozone generator in the reaction chamber and transforms into excited NO2. When no2 transitions from the excited state to the ground state, it emits a photon, and the optical signal is detected and received by a photomultiplier tube at a specific wavelength. After amplification by microcurrent amplifier and computer data processing, it can be converted into electrical signals proportional to light intensity. Under certain conditions, the chemiluminescence intensity in the reaction is proportional to the amount of nitric oxide, and the amount of nitric oxide is proportional to the total nitrogen content in the sample, so the total nitrogen content in the sample can be determined by measuring the chemiluminescence intensity.
Temperature control range: room temperature ~ 1050℃
Temperature control accuracy: ±3℃
Gas source requirements: high purity argon: purity 99.995% or more
High purity oxygen: purity 99.995% or more
Power supply: AC220V±22V, 50Hz±0.5Hz, 1500 W
Dimensions: Main engine: 305(W)×460(D)×440(H)mm
Temperature control: 550 (W) x 460 x 440 mm (H) (D)
Weight: host: 20kg
Temperature control: 40 kg
Contact Person: Miss.