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Product model: NH3N-8000
System Overview
NH3N-8000 Outgoing colorimetric ammonia nitrogen on-line analyzer is a new generation of automatic online analyzer based on China’s standard method of water quality ammonium determination distillation titration method and environmental protection industry standard HJ/T101-2003. This product is a maintenance-free online monitoring instrument launched by Modi-Tech on the basis of years of research on water quality analysis products. In the ejection bottle, the pre-treated sample is first mixed with the ejection liquid, which first converts ammonia nitrogen in the sample into ammonia gas, and then under the action of the diaphragm pump, the ammonia gas is transmitted to the colorimetric tank and reacts with the indicator in the colorimetric tank to change the color of the indicator. In the measuring range, the degree of color change 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 degree of color change.
Technical Parameters
| Test method: | expulsion colorimetric method; |
| Test range: | 0 ~ 2/10/50/300 (customizable) mg/L; |
| Accuracy: | > 100mg/L: < 10% reading; < 100mg/L: < ±1mg/L; |
| Repeatability: | > 100mg/L: < 5% reading; < 100mg/L: < ±1mg/L; |
| Response time (90%) : | adjustable, min. 6min; |
| Test mode: | timing, equal interval, manual; |
| Reagent consumption: | 1mL at a time; |
| Maintenance mode: | self-maintenance, user maintenance interval >5 months; |
| Self-monitoring: | self-monitoring of leaks; Instrument status self-diagnosis; |
| Analog output: | 4– 20mA analog output; |
| Relay control: | 2 24V 1A relay high and low point control; |
| Data transmission mode: | RS232, RS485; |
| Display: | 8.0-inch LCD touch screen, resolution 800×600; |
| Data storage: | one year of valid data; |
| Reagent change: | change once a month; |
| Operating temperature: | +0 ~ 50°C; |
| Power supply: | 220 ±10% VAC; 50-60Hz; |
| Power consumption: | about 60W; |
| Size: | 490×1340×375mm; |
| Weight: | about 45Kg. |
System Features
· The expulsion method is not subject to the background interference of the water sample, and is applicable to any online monitoring of water quality in the specified range.
· The water sample pretreatment device adopts maintenance-free design, which can ensure that the maintenance cycle of the pretreatment device exceeds half a year.
· The reaction time can be adjusted, and the measurement process and results can meet the national standards, and also meet the environmental protection industry standards.
· The analytical flow path design and reagent formulation of all imported devices ensure the measurement reproducibility, and the current measurement reproducibility can reach 5%.
· Automatic operation, no personnel on duty, can achieve automatic zero, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, automatic recovery and other intelligent functions.
· Online monitoring methods are diversified, which can realize manual measurement at any time, automatic timing measurement, automatic periodic measurement and other measurement methods.
· Automatic leakage alarm function, when there is a reagent leak, the instrument automatically alarms, prompting the user to maintain.
