（China）YY9870B Automatic Kjeldahl nitrogen analyzer
Instrument characteristics:
1) The computer operating system developed based on Windows10 is the same, which is convenient for application
2)① Computer operation control host, sample parameter input, analysis operation; ② Analysis data reading, query, export, Internet transmission; ③ Analysis results automatically generate analysis report, edit, print and export
3) The control system uses a 10-inch color touch screen for unified control of the “nitrogen analyzer host and refrigeration system”, without multiple switches and Settings. Convenient, simple and safe
4) The automatic Kjelner nitrogen analyzer without tap water is equipped with an efficient refrigeration water circulation system controlled by the nitrogen analyzer host, which is energy-saving, environmental protection and good stability
5) Three-level rights management, electronic records, electronic labels, and operation traceability query systems meet relevant certification requirements
6) The standard configuration refrigeration system can save a lot of water resources for users, energy saving, environmental protection, and stable analysis data
7) Three-level rights management, electronic records, electronic labels, and operation traceability query systems meet relevant certification requirements
8)★ System 60 minutes unmanned automatic shutdown, energy saving, safety, rest assured
9)★ The instrument built-in protein coefficient query table for users to consult, query and participate in the system calculation, when the coefficient =1 when the analysis result is “nitrogen content” when the coefficient >1 analysis results are automatically converted to “protein content” and displayed, stored and printed
10) Titration system uses R, G, B coaxial light source and sensor, wide color adaptation range, high precision
11)★R, G, B three-color light intensity automatic adjustment system is suitable for sample analysis of different concentrations
12) The titration speed can be arbitrarily set from 0.05ml/ s to 1.0ml/ s, and the minimum titration volume can reach 0.2ul/ step
13) German ILS 25mL injection tube and linear motor with 0.6mm lead form a high-precision titration system
14) The internal standard of titrant concentration eliminates the systematic error of the difference between human and instrument determination, and has high accuracy and convenience
15) The titration cup is installed to facilitate users to observe the titration process and titration cup cleaning
16) Side distillation side titration mode can save analysis time and reduce ineffective distillation electricity
17) Distillation time is freely set from 10 seconds to 9990 seconds
18) The steam flow rate can be arbitrarily adjusted from 1% to 100% to apply different concentration samples
19) Automatic discharge of waste liquid from cooking pipe to reduce labor intensity of staff
20)★ Shut down automatic cleaning alkali pipeline to prevent pipeline blockage and ensure liquid supply accuracy
21) Data can be stored up to 1 million pieces for users to consult
22)5.7CM automatic paper cutting thermal printer
23)USB, LAN, RS232, CAN, WIFI, Ethernet, electronic balance, refrigeration system data interface
24) The JK9870B is equipped with the computer operating system developed by Windows10, which can automatically generate inspection reports and other network services, and is equipped with a 27-inch computer as standard
25)★ The unique “sample weighing data automatic upload packet” does not need to record and input the weight of the sample one by one, reducing input errors and improving work efficiency
26) The ammonia separator uses “polyphenylene sulfide” (PPS) plastic processing, which can meet the application of high temperature and alkaline working conditions (Figure 4).
27) The steam system is made of 304 stainless steel, safe and reliable
28) The cooler is made of 304 stainless steel, with fast cooling speed and stable analysis data
29) Leakage protection system to ensure the safety of operators
30) Security door and security door alarm system to ensure personal safety
31) The missing protection system of the deboiling tube prevents reagents and steam from hurting people
32) Steam system water shortage alarm, stop to prevent accidents
33) Steam pot overtemperature alarm, stop to prevent accidents
34) Steam overpressure alarm, shutdown, to prevent accidents
35) Sample overtemperature alarm, shutdown to prevent sample temperature rise and affect the analysis data
36) Reagent barrel, titration bottle low liquid level alarm
37) Cooling water flow monitoring to prevent insufficient water flow caused by sample loss, affecting the analysis results.
Technical Parameters:
1) Analysis range: 0.1-240 mg N
2) Precision (RSD) : ≤0.5%
3) Recovery rate: 99-101%
4) Minimum titration volume: 0.2μL/ step
5) Titration speed: 0.05-1.0 ml/S arbitrary setting
6) Distillation time: 10-9990 free setting
7) Sample analysis time: 4-8min/ (cooling water temperature 18℃)
8) Titrant concentration range: 0.01-5 mol/L
9) Input method of titration solution concentration: manual input/instrument internal standard
10) Titration mode: Standard/drip while steaming
11) Titration cup volume: 300ml
12) Touch screen: 10-inch color LCD touch screen
13) Computer operating system developed by Windows10
14)27 “desktop integrated computer
15) Data storage capacity: 1 million sets of data
16) Printer: 5.7CM thermal automatic paper cutting printer
17) Communication interface: 232/ Ethernet/computer/electronic balance/cooling water/reagent barrel level 17) deboiling tube discharge mode: manual/automatic discharge
18) Steam flow regulation: 1%–100%
19) Safe alkali adding mode: 0-99 seconds
20) Automatic shutdown time: 60 minutes
21) Working voltage: AC220V/50Hz
22) Heating power: 2000W
23) Host size: Length: 500* Width: 460* height: 710mm
24) Temperature control range of refrigeration system :-5℃-30℃
25) Output cooling capacity/refrigerant :1490W/R134A
26) Refrigeration tank volume: 6L
27) Circulation pump flow rate: 10L/min
28) Lift :10 meters
29) Working voltage :AC220V/50Hz
30) Power: 850W
