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Conventional Pollution Online Monitoring Instrument
On-line Ammonia Nitrogen Monitor
product details

Product Model: NH3N-8000


System Overview


The water sample was sent to the ammonia nitrogen digestion tank after the pretreatment device, and then potassium bichromate was added, and the ammonia nitrogen concentration in the water was measured by colorimetry after high temperature and high pressure reaction in the presence of silver and mercury salts. At the same time, the water sample was taken into the colorimetric tank, and the sodium reagent or salicylic acid was added for the colorimetric determination of ammonia nitrogen. The degree of change of the color of the solution in the remeasurement range is proportional to the concentration of ammonia nitrogen in the water sample, and the content of ammonia nitrogen in the water sample can be calculated by measuring the absorbance of the solution.


Technical Parameters


Measurement method: potassium persulfate oxidation UV-VIS spectroscopy.
Measurement range: ammonia nitrogen: (0-50) mg/L.
Measurement accuracy: <10%.
Measurement repeatability: <5%.
Zero drift: ±5%.
Range drift: ±10%.
MTBF (trouble-free running time) : ≥720 h/ time.
Actual water sample comparison: ±10%.
Measurement method: a variety of options are available.
Measurement time: 30-120min Adjustable.
Calibration method: automatic timing calibration or manual calibration.
Reagent consumption: only 2mL of reagent is consumed per measurement.
External sampling of the instrument: submersible pump and self-priming pump two ways;
Data transmission: it can provide 4-20 mA and RS232 data transmission interfaces at the same time;
Ambient temperature: +5°C to +40°C;
Host size: 530×1340×390mm;
Weight: about 45kg;
Power supply: (220±20) VAC /(50±0.5) Hz;
Power consumption: about 100W (excluding sewage pump).


System Features


· Maintenance Free Design

The water sample pre-treatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pre-treatment device exceeds six months;

· Chemical Digestion Time Can Be Adjusted

The chemical digestion time can be adjusted, and the measurement process and results meet relevant standards;

· Adjustable Quantitative Sampling Device

Ensure that the instrument accurately measures various water samples by adjusting the reagent dosage and sampling amount;

· Non Contact Injection Pump

The use of reagents adopts a non-contact injection pump to avoid direct corrosion of the reagent pump, which can extend the service life of core components and reduce user usage costs;

· All Imported Devices

The analysis of flow path design and reagent formulation ensures measurement reproducibility, with a current measurement reproducibility of up to 5%;

· Fully Automatic Operation

No need for personnel on duty, it can achieve intelligent functions such as automatic zero adjustment, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery;

· Diversified Online Monitoring Methods

It can achieve measurement methods such as manual measurement at any time, automatic timed measurement, and automatic periodic measurement;

· Leakage Reminder Function

When there is a reagent leak, the instrument automatically prompts the user to perform maintenance.