Design Concept
Accurate and reliable measurement, sample protection, easy operation, two‑year maintenance‑free, three‑year free software upgrade. The principle of automatic Kjeldahl nitrogen analyzer is mature. However, it features highly corrosive reagents, simple structure, high‑temperature liquid and gas circuits. An accurate and reliable nitrogen analyzer shall be guaranteed by sound design concept, precise manufacturing process and qualified raw material selection.
Product Features
- Safety: For laboratory operators
- Door‑switch protection, digestion‑tube in‑place detection
- Accuracy: All pipelines shall be well‑sealed, with precise liquid feeding, compensation and guarantee functions.
- Fully‑sealed entire gas circuit. Independent liquid‑extraction pumps for acid, alkali and distilled‑water feeding. Distillation temperature compensation, distillate temperature detection & control, adjustable distillation power, manual alkali supplement and intermittent feeding.
- Sample protection: Sample protection under abnormal conditions
- Low‑level alarm for various reagents, cooling‑water shortage alarm and distilled‑water shortage alarm to prevent sample failure.
- Operability
- New‑generation chip and responsive touch‑screen for user‑friendly interface. Question‑answer operation enables operation without manual. Operation manual is stored inside chip for zero‑training requirement.
- Two‑year maintenance‑free, three‑year free software upgrade
- Automatic water‑saving function: Cooling water is switched on automatically only during distillation.
- Kjeldahl nitrogen analyzer is essentially a distiller with simple structure but corrosive reagents. Xiamen Kelitai applies targeted pipes & materials for different gas and liquid circuits together with proprietary technology to realize two‑year maintenance‑free (warranty) for whole unit (except glass parts). The latest chip supports remote equipment status diagnosis to assist user maintenance, and provides 3‑year free software upgrade.
Technical Parameters
- Measuring range: 0.06‑210 mg N
- Testable sample quantity: solid＜5 g, liquid＜15 ml
- Recovery rate:＞99.5 %
- Repeatability: RSD ≤0.5 %
- Distillation speed: 3‑6 min per sample
- Distillation time: 1‑99 min
- Distillation power: 750‑1500 W adjustable
- Delay time: 0‑1800 s (suitable for fertilizer testing)
- Distillate flow rate: 15‑30 ml/min adjustable
- Data storage: 1000 distillation programs, storage for over 1000 samples
- Cooling‑water pressure:＞0.15 MPa
- Cooling‑water consumption:＜2 L/min (water temperature ≤20 ℃)
- Automatic acid‑adding, alkali‑adding, diluent‑adding, water refilling and distillation; data storage
- Rated voltage: AC220V±10 %
