The HTTN-9000 system uses the chemiluminescence method to determine the total nitrogen content, which improves the ability to resist impurity interference, avoids the cumbersome operation of the titration cell in the电量法 (coulometric method) and the resulting unstable factors, and greatly enhances the sensitivity of the instrument. The key components of the system adopt imported devices, which ensures the reliable performance of the whole machine. Application fields: environmental protection, chemical industry, biological industry, petroleum, energy.

Characteristics：

High degree of automation: Based on the Windows Chinese operation interface, direct man-machine dialogue is available. The computer controls data collection, processing, storage and printing. The instrument automatically adjusts gas flow, automatically injects samples, automatically cleans, automatically changes samples, automatically generates standard curves, automatically goes to sleep after the analysis process, can be set to wake up regularly, *realizing unattended analysis.

Instrument execution standards：

SH/T 0657－1998　Method for Determination of Trace Nitrogen in Liquid Petroleum Hydrocarbons (Oxidative Combustion and Chemiluminescence Method)

GB/T 17674-1999Determination of Nitrogen Content in Crude Oil and Its Products – Chemiluminescence Method

ASTM D4629－2010 Standard Test Method for Determination of Trace Organically Bound Nitrogen in Liquid Petroleum Hydrocarbons by Injection/Insertion of Oxidizing Fuel and Chemiluminescence

ASTM D5762 -2010 Test Method for Determination of Nitrogen in Petroleum and Petroleum Products by Ship Inlet Chemiluminescence Method

ASTM D6069-2001—Standard Test Method for Determination of Trace Nitrogen in Hydrocarbons for Aviation by Oxidative Combustion and Reductive Pressure Chemiluminescence Detection

System Configuration：

Standard configuration: Computer + HTTN-9000 system + automatic sampler (16-position or 110-position)

Technical Parameters of HTTN-9000 Fully Automatic Luminescence Nitrogen Analyzer
Basic parameters: Sample type: Liquid
Determination method: Chemiluminescence method（N）
Sample injection volume: liquid sample：5-20μL　　　　　　
Measurement range：0.05～20000mg/L（High concentration can be diluted）
Measurement time: about 2 minutes

PMT high-voltage range：DC400V～900V

measurement accuracy：

Temperature control range: room temperature~1300℃

Temperature control accuracy：±1℃

Correlation coefficient of the standard curve：≥0.999

Gas source requirements: High-purity argon: purity above 99.9% ,

　　　　　High-purity oxygen: purity above 99.9%

Power Supply：AC220V±22V，50Hz±0.5Hz，1500 W

Overall dimensions: Main unit:505(W)×541(D)×960(H)mm

Weight: Main unit:40kg

HTTN-9000Advantages of Full-automatic Luminescence Nitrogen Analyzer

The instrument adopts a vertical sampling mode.

It realizes automatic cleaning of the sampling needle and automatic replacement of samples, and the program can be set according to requirements.

A fully automatic sampler with 16 or more positions is selected, which has accurate positioning. Once set, it can perform fully automatic detection and automatically set the sampling volume. It realizes unmanned operation and automatic analysis.

The gas flow rate is precisely controlled by a mass flow meter without manual adjustment.

The gas pressure and temperature are precisely controlled by corresponding sensors.

The computer controls the entire processes of analysis, data processing, etc., and displays the working status of the entire process. The standard curve can be completed automatically.

Imported high-quality furnace heating wires are used to extend the service life of the cracking furnace. The data processing software has an over-temperature protection and automatic shutdown function. When the temperature exceeds the set upper limit, the instrument will automatically cool down and enter a protection state.

The * nitrogen reaction chamber enhances the reaction intensity between nitric oxide and ozone, and quickly discharges exhaust gas to reduce tailing.

It is equipped with an aromatic hydrocarbon barrier filter system with a selective permeable membrane and a detection system, which is impossible to be contaminated.

A specially made quartz cracking tube, which does not need to be disassembled and replaced, * solves the problem that the combustion tube is prone to carbon deposition.

The instrument is equipped with a gas filtration and purification system.

If the gas flow rate or pressure is abnormal, the instrument will automatically cool down for protection.

The gas pipelines are connected with spherical clamps for easy maintenance.

The instrument can set the cracking furnace temperature as well as the sleep and wake-up functions. After the sample analysis is completed, the instrument automatically enters the sleep state.

Key components are imported, which reduces instrument noise and improves detection sensitivity.