- Analytical range: 0.1—240mg N
- Recovery rate: 99-101%
- Titrant concentration range: 0.01—5 mol/L
Fully Automatic Kjeldahl analyzer, KJA-9870A/KJA-9870B
Description
- The control system adopts a 10 inch color touch screen to uniformly control the nitrogen analyzer host and refrigeration system, without the need for multiple switch settings, which is convenient, simple, and safe.
- The standard coolingsystem can save a lot of water resources for users, and is energy-saving, environmentally friendly, and has stable analysis data.
- Three-level authority management, electronic records, electronic labels, and operation traceability inquiry system
- The system automatically shuts down after 60 minutes of no operation, which is energy-saving, safe and secure.
- The instrument has a built-in protein coefficient query table for users to read, query and participate in system calculations. When the coefficient=1, the analysis result is “nitrogen content”. When the coefficient>1, the analysis result is automatically converted to “protein content” and displayed, stored and printed.
- The titration system uses R, G, and B coaxial light sources and sensors, with a wide color adaptability range and high accuracy.
- The R, G, and B three-color light intensity automatic adjustment system is suitable for the analysis of samples with different concentrations.
- The titration speed can be set arbitrarily from 0.05ml/second to 1.0ml/second, and the minimum titration volume can reach 0.2μL/step.
- The German ILS 25mL injection needle and 0.6mm lead linear motor form a high-precision titration system.
- The internal standard of titrant concentration eliminates the systematic error caused by the difference between human and instrument judgment, and is highly precise, convenient and fast.
- Visible titration cup design makes it convenient for users to observe the titration process and clean it.
- The simultaneous distillation and titration mode can save analysis time and reduce ineffective distillation power consumption.
- Distillation time can be freely set from 10 seconds to 9990 seconds.
- The steam flow rate can be adjusted from 1% to 100% to suit samples of different concentrations.
- The automatic discharge of waste liquid from the digestion tube reduces the labor intensity of operators.
- Shut down and automatically clean the alkali pipeline to prevent pipeline blockage and ensure liquid supply accuracy.
- Data storage can reach 1 million items for users to check.
- 7CM automatic paper cutting thermal printer.
- The unique “sample weighing data automatic upload data package” eliminates the need to record and enter the weight of samples one by one, reducing input errors and improving work efficiency.
- The ammonia separator is made of “polyphenylene sulfide” (PPS) plastic, which can be used under high temperature and alkaline working conditions.
- The steam system is made of 304 stainless steel, safe and reliable.
- The cooling system is made of 304 stainless steel, which has fast cooling speed and stable analysis data.
- The leakage protection system ensures operator safety.
- The safety door and safety door alarm system ensure personal safety.
- The digestion tube absence protection system prevents reagents and steam from injuring people.
- Steam system water shortage alarm prompts and shuts down to prevent accidents.
- The steam boiler has over-temperature alarm and shutdown to prevent accidents.
- Steam over-pressure alarm and shutdown to prevent accidents.
- Sample over-temperature alarm and shutdown prevent sample temperature from rising and affecting analysis data.
- Low level alarm in reagent barrel and titration bottle.
- Cooling water flow monitoring prevents insufficient water flow from causing sample loss and affecting analysis results.
Specifications
| Model | KJA-9870A | KJA-9870B |
| Analytical Range | 0.1-240 mg N | |
| Accuracy (RSD) | ≤0.5% | |
| Recovery Rate | 99-101% | |
| Min. Titration Volume | 0.2μL/step | |
| Titration Speed | 0.05-1.0ml/s can be set at will | |
| Distillation Time | 10s-9990s free setting | |
| Sample Analysis Time | 4-8min/ (cooling water temp. 18℃) | |
| Titrant Concentration Range | 0.01-5mol/L | |
| Titrant Concentration Input Method | Manual input/instrument internal standard | |
| Titration Mode | Standard/Steaming while dripping | |
| Titration Cup Volume | 300ml | |
| Touch Screen | 10-inch color LCD touch screen | |
| System | / | Windows 10 development operating system and
27-inch computer |
| Communication Interface | RS232 / Cooling water / Reagent barrel liquid level | RS232/Ethernet/Computer/Electronic balance/Cooling water/Reagent barrel liquid level |
| Data Storage Capacity | 1 million groups | |
| Printer | 5.7CM thermal automatic paper | |
| Digestion Tube Waste Discharge Mode | 1% -100% | |
| Steam Flow Regulation | 1% -100% | |
| Safe Alkali Adding Mode | 0-99s | |
| Automatic Shutdown Time | 60minutes | |
| Electricity | AC220V/50Hz | |
| Heating Power | 2000W | |
| External Dimension | 500*460*710mm | |
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