Total Nitrogen Automatic Analyzer

Vasthi Instruments are global leaders in manufacturing of Total Nitrogen Automatic Analyzer and have been supplying instruments to customers worldwide, Our multidisciplinary team of scientists, physicians, engineers, and regulatory consultants with decades of global experience brings you the quintessential mechanism that provides complete safety accuracy and durability.

Vasthi Instruments was formed with visionary thinking and innovative ideas resulting in innovative products and solutions. We enhance our product quality by the continuous process of research and development. We have WIDE range of models to suite various site conditions and processes.


Overview :
Total Nitrogen Automatic Analyzer model of V.W TPN-4000 is a new self-developed TN automatic online analyzer for measuring total nitrogen. Based on our permeance measurement technology platform, combined with xenon lamp/ grating spectrograph technology and digestion colorimetric integration technology, it can achieve high precision, low detection limit, high stability and low maintenance of TN automatic online monitoring. The product fully meets the application of pollution sources, industrial production process, municipal wastewater, and etc.



Features :

•High reliability, strong anti-interference capability
•Permanence measurement technology will not be interfered by chromaticity, suspended solids and bubbles.
•High detection precision, Lower detection Limit (0.1mg/L), small drift for long-term operation.
•Good operability, small maintenance workload and low maintenance cost
•Self-diagnostic function.
•Single-channel valve island of high integration, able to maintain, disassemble and clean individually.
• Able to extend to all-day networking for real-time inspection of instrument running state.
•High intelligence level
•Equipped with alarm function, quality control function and reverse control function It can be widely used in environmental pollution source monitoring, industrial •process water monitoring

Application :

•Municipal sewage processing, surface water monitoring, and etc.


  • Measurement method: Alkaline potassium porsulfate digestion UV Spectrophotometry
  • Range  :L1-5/25/50mg/L (extendable)
  • Zero drift: +5.0% FS
  • Span drift: 0% FS
  • Indication error:0%
  • Repeat-ability: <5%
  • Reagent: Standard reagent can do 400 times of measurement
  • Maintenance: <2hour/month
  • Working temperature: 5~N-45°C
  • Power consumption: 200w(220VAC±10%, 50Hz), not contain water pump
  • Lower detection Limit:01mg/L
  • Measurement interval: Point measurement and interval measurement, and the measurement can also be triggered by serial port
  • Communication interface: RS485/RS232/USB interface optional 1×4- 20mA input/output (can be expanded to 2)