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NPW-160 Total Phosphorus / Total Nitrogen / COD Analyzer

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NPW-160 Total Phosphorus / Total Nitrogen / COD Analyzer

Product description
Technical indicators
- working principle:
Total phosphorus (according to international GB11893-89): Add potassium persulfate as oxidant to the sample, digest the water sample to be tested at 120 ℃ for 30min, convert the phosphide into phosphate ion, and use the molybdenum blue method to absorb water to detect the water quality The total phosphorus content (measurement wavelength: 700nm)
Total nitrogen and potassium persulfate are used as oxidants (according to international GB11893-89): potassium persulfate is used as oxidizer and digested at 120 ° C for 30 minutes to convert the nitrogen-containing compounds into nitrate ions and adjust the pH of the sample solution to 2- 3; The content of total nitrogen in water quality is detected by ultraviolet absorption spectrophotometry (measurement wavelength: 220nm, 275nm turbidity correction: A = A220-A275 × 2)
COD (UV): dual-wavelength absorbance photometry (UV 254nm, visible light 546nm)
-Application industry:
The NPW-160 total phosphorus / total nitrogen analyzer is mainly used for automatic monitoring of total phosphorus, total nitrogen and COD in surface water, tap water, municipal sewage or other special occasions.
-Instrument features:
● Independently designed heating decomposition device
● The system can realize wireless transmission
● Built-in CF card, data can be stored for a long time
● Low operating cost and less secondary pollution
● Integrated design simplifies pipeline connection
● Advanced multi-wavelength detector can measure three indicators: total phosphorus, total nitrogen, COD (UV)
- Product advantages:
● Built-in multi-wavelength detector, one measurement can get two parameters at the same time, including total nitrogen and total phosphorus;
● According to JIS standard (heating at 120 oC for 30 min), the same measurement method is adopted; it has good accuracy and stability;
● Low operating cost, reduce reagent consumption and waste liquid discharge;
● Built-in multiple functions, data storage card (can save one year of measurement data), reagent quantitative sampling system;
● Can be equipped with wireless transmission function.
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Technical index
Measuring range: Total nitrogen, 0 ~ 2mg / L to 200mg / L
Total phosphorus, 0 ~ 0.5mg / L to 20mg / L
Measuring range: ≤± 3% FS
Analysis interval: 1 hour to 6 hours, can be set arbitrarily
Sample conditions: Temperature, 2 ~ 40 ℃
Pressure, 0.02 ~ 0.05MPa
Flow rate, 1 ~ 3L / min
Each analysis sample volume is about 67.5mL
Reagent replenishment interval: 1 month
working environment: Temperature, 2 ~ 40 ℃, 85% relative humidity indoor installation
Analog output: 4 ~ 20 mA, load 600 ohm
Relay: Can set upper and lower limit alarms, fault information, etc.
power supply: 220VAC,50/60HZ
Power consumption: 500VA (maximum) 200VA (average)
Data communication: RS485 串行端口RS485 serial port
Dimensions: 450 × 380 × 1430 mm
weight: About 80Kg


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