1. Product introduction

JC-9870A automatic Kjeldahl nitrogen analyzer is a "nitrogen element" (protein) analysis system developed based on the classic Kjeldahl method of automatic distillation, titration technology and color method to determine the end point. , Relevant international standards The
refrigeration cycle system is the standard configuration of this product. The refrigeration cycle system is better than tap water in terms of application stability, reliability and water saving.
This product has stable and reliable performance and is widely used in basic analysis, scientific and technological research and development. , product quality control and other fields, is an ideal substitute for imported products

2. Product parameters

3. Product Features

1) Fully automatic Kjeldahl nitrogen analyzer without tap water: equipped with high-efficiency refrigeration water circulation system controlled by the nitrogen analyzer host, energy saving, environmental protection and good stability

2) Operating system: 7-inch color touch screen is adopted, and the menu is in Chinese man-machine dialogue mode, which is easy to operate and learn

3) The operation guide is screened: the daily operation, reagent preparation, maintenance, and maintenance work and rest are placed on the screen for users to query and use

4) Titration sensor: R, G, B three-color color sensor is selected, which has a wide range of color adaptation, high precision and fast response speed.

5) Automatic calibration of the titrant concentration instrument: The automatic calibration of the instrument eliminates the systematic error of the difference between the human and the instrument, with high precision and convenience

6) Titration while distillation: The titration while distillation mode is that the sample distillation separation volume is about 1/3 of the time to enter the titration program. At this time, distillation and titration are carried out at the same time. When the titration reaches the end point, the distillation ends at the same time.

7) Titration curve: The three titration curves of R, G and B can observe the change of the sample during the titration process and provide help for the analysis process

8) Dosing pump: a "plunger-type dosing pump" composed of a German-made linear motor and an injection needle, which has high control accuracy and good stability

9) Verification of titration volume: to verify whether the accuracy of the titration system is reliable to ensure the accuracy of the analytical data

10) Titration cup: It is convenient for users to observe the titration process and clean the titration cup

11) Protein coefficient query: The instrument has a built-in protein coefficient query table for users to access, query and participate in system calculation, which is convenient for users to use

12) Automatic discharge of digestion waste liquid: After distillation, a large amount of waste liquid will remain in the digestion tube. The "waste discharge system" can automatically discharge the waste liquid to reduce the labor intensity of the staff.

13) Analysis data storage, query and printing: The data storage is up to 140,000 pieces of sample data for users to consult, and the printer is a 57CM automatic paper cutting thermal printer

14) Steam flow adjustment %: The steam flow can be adjusted arbitrarily from 70%--100% to be suitable for samples of different concentrations

15) Automatic cleaning of alkali pipelines: the system automatically cleans the alkali pipelines every time the machine is shut down to prevent the alkali pipelines from being blocked due to long-term use after shutdown.

16) Cooling water flow monitoring: when the cooling water flow is too small or too large, the monitoring system will alarm and stop

17) One machine and two uses: In addition to measuring "amino" samples, this product can also measure "nitro" samples, such as "nitroammonium" fertilizers, which can save users 50% of purchasing costs

18) Modular structure: The technical "modular structure" design makes the internal layout more reasonable, the pipeline distribution is concise, and the failure caused by the pipeline is greatly reduced. Maintenance and maintenance are convenient

19) Ammonia separator (splash-proof bottle): choose soda-lime tempered glass material that is resistant to strong alkali corrosion to completely solve the corrosion of the anti-ammonia separator caused by long-term soaking in strong alkali

20) Metal material (304 stainless steel) steam boiler: stable performance, reliable, strong pressure resistance

21) Leakage protection system: prevent personal injury caused by leakage of the instrument and electric shock caused by various reasons, and protect the operator

22) Absence protection of digestive tube: When the digestive tube is not put into the system, the system does not add reagents or heat to prevent reagents and steam from hurting people

23) Safety door protection: The system does not work when the door is not closed, and the 5mm thick transparent safety door ensures personal safety

24) Water shortage protection of steam system: When the steam system is short of water, the system will automatically shut down and alarm to prevent accidents.

25) Steam boiler over-temperature protection system: If the distillation system fails and the temperature in the steam boiler is too high, the system will automatically shut down and alarm

26) Steam overpressure protection: a pressure measurement alarm system composed of a pressure transmitter and a CPU, when the system pressure is too high, the system will alarm and stop to prevent accidents.

27) Sample over-temperature alarm: In order to prevent the sample temperature from rising due to too small cooling water flow and affecting the analysis data, the system alarms and displays the instant temperature of the sample

28) Safe alkali addition mode: This mode can reduce the strong neutralization reaction in the alkali addition process to prevent pipe bursting.