Quantitatively determine nitrate by utilizing the absorption of nitrate ions at a wavelength of 220nm. Dissolved organic matter also absorbs at 220nm, while nitrate ions do not absorb at 275nm. Therefore, another measurement was taken at 275nm, and the corrected absorbance A was calculated based on the formula A=A220-2A275. To calibrate nitrate nitrogen values.
Modular design allows each component to operate independently, improving the efficiency of the instrument;
? Various types of signal outputs: printers RS485/RS232、4-20mA、GPRS、 Relays, etc;
Various sample making methods: manual control, timed (interval and hourly) control, 4-20mA current input control, switch control, and other forms;
Automatic compensation for measuring light source attenuation, good stability, and small drift;
Wide range of measurement, fast sampling speed, and high accuracy;
Low dosage of medication, maintenance free for one month;
Optoelectronic non-contact measurement, high measurement accuracy, and high operational reliability;
Adopting high-resolution industrial grade color touch screen, user-friendly interface, configuration design, and simple operation.
application area
Online monitoring of industrial pollution source wastewater
Online monitoring of industrial process water usage
Online monitoring of water quality at the inlet and outlet of municipal sewage treatment plants
Online monitoring of river, lake, reservoir, and groundwater quality
Testing principle: UV spectrophotometry
Measurement range: 0-100mg/L (expandable)
Colorimetric wavelengths: 220nm and 275nm
Minimum cycle: 40min
Accuracy: ± 10%
Repetitive error: ± 10%
Zero drift: ± 5%
Range drift: ± 10%
Analog output: 1 4-20mA output (optional 2 channels), maximum load resistance of 750 Ω
Digital output: RS232/RS485
Switch output: 1 relay output (optional 2)
Other outputs: Printer output or sending SMS to the target phone number via GPRS to create samples
Data storage: It can store measurement data for three years and can be stored cyclically
Data export: Measurement values can be imported into a USB drive through a USB port and saved
Power supply: AC220 ± 10% V, 50 ± 10% Hz
Dimensions: Height 1430 x Width 500 x Depth 403 (mm)
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