:: Product Information

TN-OnlineAnalyser automatic analysis of total nitrogen in water


Features & Informations


Automatic analysis

Automatic clean,cycle time freely set

Regular auto calibrating

Manual calibration and remote calibration

All optical spectrum (include 220nm, 275nm, 400nm, 700nm etc.)measuring

Reliable turbidity Interference correction technique

Modular design

Simple maintenance

Range adjustable and extensible

Quality control sample verification

Remote monitoring of working state and Data reliability diagnostic function

Equipped with UV assisted digestion function

Touch screen operation and display, Menu operation interface

Fault alarm, Error alarm, Call self-starting function.

4-20mA, RS232/485 and Modbus/TCP


Surface Water Analysis

Tab Water Monitoring

Municipal Sewage Checks

Accessment of Industrial Water Monitoring


The database software is used to record and analyse the data. The most important features are...

saving of data and parameters at any time

graphic display of all measurement values

online display in LAN

calibration of the instrument

parameterisation of the measurement

data export to EXCEL and to text files

Measurement principleKolorimeter
Range0 - 2.5/10/50/350mg/L, more range chooseable
Accuracy< ±3% or 0.05mg/L, whichever is higher
Repeatability< 2%
Detection limit0.05mg/L (Minimum range)
Cycle time21 minutes
Zero drift< 1% FS/24h
Range drift< 1% FS/24h
Resolution0.01mg/L (Minimum range)
Signal output4-20mA RS232/485 MODBUS/TCP
Working environmentTemperature: 0~45°C; Humidity: 10~95%
Power Supply220±10%V 50±2%HZ
Weight and sizeWeight: ~45Kg; Size HxLxW: 110x60x31cm
Protection levelIP54; IP65
Sample conditionNo oil, no supended solid, temperature: 2~40°C, Pressure: 0~0.1Bar, Flow: 1.5~3L/min

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Inquiry online

Dianjiang Group Limited
Add: Room 1510,15/F,New Commerce Centre, No.19 On Sum Street, Shatin, N.T., Hong Kong.
Tel: (852) 3690 1588   Fax: (852) 3690 1586
Email: Dianjiang_HK@yahoo.com.hk   Hongkong@Dianjiangtech.com
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