- Drinking water
- Process optimisation of wastewater treatment plants
- Industrial and municipal wastewater
- Mineral water monitoring
- Surface water
Spectrophotometric analyzer for the determination of nitrate ions.
The measurement is based on the UV absorption of the nitrate ion at 220 nm. The instrument allows ranges of 30 and 60 mg/L as NO3 (x2 to x40 with dilution). The result can be expressed as NO3 or N-NO3.
Nitrates are dangerous pollutants for aquatic life and poses risks to human health when present in drinking water. The nitrates concentration in surface waters derive mainly from biological pollution due to urban agglomerations, agriculture nitrogenous fertilizers, discharges from chemical industries and combustion processes. The instrument is ideal for potable water or suface water analysis and with the addition of a dilution module is also capable of the determination of nitrates in complex matrices such as urban and industrial wastewaters.
The method is based on the absorbance that the nitrate ion in water sample presents in the UV region at 220 nm . Considering that also organic substances absorb in that spectrum region, a reference absorption measurement at 270 nm is required, in order to reduce the organic interference. The compensated absorbance is proportional to the nitrate ions concentration in the sample.
|Min. analysis time||1 minutes|
|Analysis Mode||Batch, near continuous operation.|
Temperature: 5 to 50 °C (41 - 122 °F)
Flow Rate: 80 to 500 mL/min
Connection: 6 mm (¼-in.)
Connection: 12 mm (½-in.)
1, 2 with integrated switching valve
3, 4 with external sequencer
|Frame||Cold-rolled steel painted with epoxy powder|
|Dimensions (H x W x D)||606 x 380 x 209 mm (23.6 x 14.8 x 8.2 in)|
|Weight||20 kg (44 lbs)|
Input Voltage:100 - 240 VAC 50/60 Hz standard or 24 VDC (option)
Power consumption: max. 80 W
2 x 4-20 mA analog outputs
Modbus RTU via RS485
|Alarms||4 SPDT programmable voltage-free relays|
|Digital Input||Remote start / stop|
|Temperature||5 - 45 °C (41 - 113 °F)|
|Relative Humidity||10 to 90 % (indoor use, outdoor installation only possible with protective cabinet or shelter not included)|