Automatic Kjeldahl Nitrogen Analyzer Model: JK9830A

The Kjeldahl method is a classic method for determining nitrogen. It's currently widely used for determining nitrogen-containing compounds in soil, food, livestock, agricultural products, feed, and other applications. This method involves three steps: sample digestion, distillation separation, and titration analysis. The JK9830A Automatic Kjeldahl Nitrogen Analyzer is an analytical system developed based on the classic Kjeldahl method. It automatically distills and separates samples and analyzes nitrogen (protein) using external techniques. Its methods and manufacturing procedures comply with the "GB/T 33862-2017 Fully (Semi-) Automatic Kjeldahl Nitrogen Analyzer" manufacturing standard and relevant international standards.

Safety Protection Systems:

· Leakage protection system ensures operator safety.

· If the digestive tube is missing, the system will not add reagents or heat, preventing injuries from reagents or steam.

· If the safety door is not closed, the system will not operate. A 5mm thick transparent safety door ensures personal safety.

· Automatic shutdown and alarm for water shortages in the steam system, preventing accidents.

· Automatic shutdown and alarm for overheating of the steam boiler.

· Alarm and shutdown for overpressure of the steam system, preventing accidents.

· Sample overtemperature alarm prevents sample temperature rise and affects analytical data.

· Safe alkali addition mode reduces the risk of strong reactions during alkali addition, preventing tube bursts.

Convenient Operating System:

.The embedded operating system, with proprietary intellectual property rights, features a 10-inch color touch screen and a Chinese-based interactive menu, making it easy to operate and learn.

Automatic shutdown function: The system automatically shuts down after 60 minutes of unattended operation, ensuring energy efficiency, safety, and peace of mind.

Titration volume input automatically calculates analysis results and stores, displays, queries, and prints them, providing some of the functionality of fully automatic products.

. Sample weighing data is automatically uploaded and entered, reducing the tedious manual input and the risk of errors.

· Operation instructions, reagent preparation, precautions, and maintenance information are displayed on the screen for easy user access.

. The instrument features a built-in protein coefficient lookup table for user access, query, and system calculations.

. 16MB of data storage can store 100,000 sample data entries for user review, and a 5.7CM thermal printer with automatic paper cutter is included.

· 99 user-defined program (recipe) management system is available.

· Multi-function interface connects to the cooling system and reagent tank level sensor.

Product Features:

 Automatic shut-off function: The system automatically shuts down after 60 minutes of unattended operation, ensuring energy conservation, safety, and peace of mind.

 Automatic calculation of analysis results via titration volume input, storage, display, query, and printing, offering some of the features of fully automatic systems.

 Automatic upload and entry of sample weighing data, reducing the tedious manual input and the risk of errors.

 Automatic discharge of digestion wastewater, reducing workload.

 Adjustable steam flow rate from 50% to 100% to accommodate samples of varying concentrations.

 The steam system provides constant pressure steam flow, ensuring stability and safety.

 Automatic cleaning of the alkali pipeline upon shutdown prevents blockage and ensures accurate liquid supply.

 Cooling water flow monitoring prevents sample loss caused by insufficient cooling water flow, which could affect analysis results.

 Delayed analysis allows measurement of nitro-based samples.

 Metal (304 stainless steel) steam boiler: Stable, reliable, and pressure-resistant.

 Professional, high-performance pumps and valves, along with imported piping, guarantee product reliability and stability.

Technical Specifications:

· Analysis Range: 0.1-240 mg N

· Precision (RSD): ≤0.5%

· Recovery (or indication error): ≥99.5% (±0.5%)

· Sample Analysis Time: 3-5 min (cooling water temperature 18°C)

· Titrant Concentration Input: Manual

· Touch Screen: 10-inch color LCD

· Data Storage: 100,000 data sets

· Printer: 5.7cm thermal printer with automatic paper cutter

· Communication Interfaces: 232/Network/Cooling Water/Reagent Level

· Digestive Tube Drainage: Manual/Automatic (5-99s)

· Delayed analysis: Reaction time: 0-2 hours

· Steam flow adjustment: 50%-100%

· Safety alkali dosing mode: 0-999 seconds

· Automatic shutdown time: 60 minutes

· Operating voltage: AC220V/50Hz

· Heating power: 2000W

· Dimensions: 500*460*710mm

· Net weight: 30kg

Optional accessories:

Reagent tank level sensor

· Test tube rack

Product configuration:

· Main unit (1 unit)

· 10L reagent tanks (3 units)

· 20L waste liquid collection container (1 unit)

· Power cord (1 unit)

· Printer paper (8 rolls)

· 250g catalyst tablets (1 bottle)

· Reagent lines (4 units)

· Cooling water inlet and outlet pipes (1 each)