nitrogen analyzer / water / wastewater / phosphorus
WDet-5000TPN TP/TN/COD Hangzhou Zetian Technology CO., Ltd



  • Measured entity:

    nitrogen, water, wastewater, phosphorus

  • Measured value:

    concentration, chemical oxygen demand

  • Configuration:

    for integration

  • Other characteristics:

    RS485, automatic, monitoring, online, multi-parameter, simultaneous, extractive, for the food industry, UV fluorescence, colorimetric


Product Description
It is a new kind of automatic on-line analyzer used for simultaneously measuring Total phosphorus, total nitrogen and chemical oxygen demand (UV method) in the water. WDet-5000 TPN using the latest photoelectric measuring, UV-vis spectral measurement techniques, has features of accurate meas-urement, high integration, low detection limit, high
eliability, strong adaptability, etc. Instrument reagent can be used on its own in accordance with the relevant national standard.

Full spectrum (200-800nm) measurement techniques, can simultaneously measure ammonia nitrogen and COD(UV method)
With automatic leakage alarm and self-diagnostic function, safety in use, efficient analysis

Total Phosphorus(TP) Total Nitrogen(TN) COD
Method Ammoniummolybdate spectrophotometry Molybdenumyellow colorimetry UV-VIS spectrophotometry
Range ±3%F.S. ±5%F.S. ±5%F.S.
Uncertainty 0~50mg/L 0.05~100mg/L 0~200mg/L
Reproducibility ±3% ±5% ±5%
Interval Continuous, 1, 2, 3... 24 hours, can also be triggered by a serial port
Reagent Consumption A single set of reagents can measure 250 samples
External Interface Analog Input: 4-20mA input (expandable to 2-channel), compatible with 0-5V input (optional)
Analog Output: 4-20mA output (expandable to 2-channel), the maximum load 500Ω
Relay Control:4 ,can be flexibly configured
Communication Interface:RS485/RS232/USB interface (optional)
Maintenance 1 hour/ month
Working Temp. 5℃~40℃
Power 200W(220VAC,50Hz),without considering pumps

Apply to water pollution monitoring/industrial process water/industrial and municipal wastewater treatment and other fields.