PTN-3000 Total Nitrogen Analyzer
Overview:
PETECOS instruments use the principle of chemiluminescence detection. After the sample (or standard sample) to be measured is introduced into the high-temperature cracking furnace, at a high temperature of about 1000°C, the sample is completely vaporized and oxidatively cracked, and the nitrides in it are quantitatively converted into nitric oxide (NO). The reaction gas is carried by the carrier gas, passes through the membrane dryer to remove its moisture, and enters the reaction chamber. Metastable nitric oxide reacts with O3 gas from the ozone generator in the reaction chamber and is converted into excited state NO2*.
When the excited state NO2* transitions to the ground state, it emits photons, and the light signal is detected and received by the photomultiplier tube at a specific wavelength. After amplification by a microcurrent amplifier and computer data processing, it can be converted into an electrical signal proportional to the light intensity. Under certain conditions, the intensity of chemiluminescence in the reaction is proportional to the amount of nitric oxide produced, and the amount of nitric oxide is proportional to the total nitrogen content in the sample. Therefore, the total nitrogen content in the sample can be determined by measuring the intensity of chemiluminescence.
Scope of application: Suitable for determining the total nitrogen content of crude oil, distillate oil, refined oil, petroleum gas, plastics, petrochemical products, food and water.
Comply with standards: Comply with SH/T0657, ASTM D4629, ASTM D5762, GB/T17674 and other standards.
| Technical parameters | |
| Measurement range | 0.2ppm/L～10000mg/L |
| Sample status | Solid, liquid, gas (with corresponding injector) |
| temperature range | Room temperature～1100℃ |
| Temperature control accuracy | ±1℃ |
| Repeatability error | 0.2mg/L≤X＜1.0mg/L≤±0.2mg/L1.0mg/L
≤X＜100mg/LCv≤10%100mg/L≤X Cv≤5% |
Complete set of instruments: host (data acquisition, control system), temperature-controlled pyrolysis system, automatic sampler, operating software, computer (optional), printer (optional), etc.
Features:
Windows operating platform, human-machine dialogue, convenient operation.
Microcurrent detection adopts the first domestic nitrogen detector, which has the advantages of high sensitivity, low noise, wide linear range, and strong anti-interference ability. It is the most advanced total nitrogen content analyzer in China.
Standard sample calibration can adopt single-point calibration, which is convenient, fast and accurate.
PETECOS instruments adopt internationally popular circuits and imported components. The performance of the entire machine is superior to similar domestic products and can replace imported ones.
Automatic fan control technology eliminates the need for anyone to be on duty after shutting down.
Advanced ozone generators use high-frequency and low-voltage components, with low power consumption and high efficiency. It is safer and consumes less energy than traditional high-voltage generating systems.
Appendix 1:
The key parts are imported components:
Photomultiplier tube (Japan) Membrane dryer (Japan)
