Chemiluminescence nitrogen determination instrument
The chemiluminescence nitrogen determination instrument (SH708) adopts the principle of chemiluminescence detection. After the sample (or standard sample) with nitrogen content to be measured is introduced to the high temperature cracking furnace, the sample is completely vaporized and oxidized cracking occurs at the high temperature of about 1050℃, in which the nitrous oxide is quantitatively converted to nitric oxide (NO). The reaction gas is carried by the carrier gas, and the water in it is removed by magnesium perchlorate in the dryer, and then enters the reaction chamber. Metastable nitric oxide reacts with O3 gas from ozone generator in the reaction chamber and converts to excited no2. When the excited state no2 transitions to the ground state, the photon is emitted, and the optical signal is detected and received by the photomultiplier tube according to the specific wavelength. After being amplified by microcurrent amplifier and processed by computer, it can be converted into electrical signals proportional to light intensity. Under certain conditions, the intensity of chemiluminescence 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 intensity of chemiluminescence.
Temperature range: room temperature to 1050 ° C
Temperature control accuracy: ±3℃
Gas source: High purity argon: purity above 99.995%
High purity oxygen: purity above 99.995%
Power source: AC220V±22V, 50Hz±0.5Hz, 1500W
Dimensions: Main machine: 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.