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System Overview
NH3N-8000N Ammonia nitrogen on-line analyzer is a new automatic on-line analyzer based on China’s standard method of Nesser’s reagent spectrophotometry. After the sample is filtered by the online pre-treatment device, it is sent to the reaction pool, where the analyzer measures and stores the blank value of the sample at first, and then the instrument automatically adds various reagents in order, including the Natriolle reagent. After adding the reagent and mixing the reagent sufficiently, the instrument conducts the color reaction according to the reaction time set by the user 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: | nessler reagent method; |
| Test range: | 0 ~ 6/20/100/300mg/L; |
| Accuracy: | >100mg/L:<10%reading; <100mg/L:<±1mg/L; |
| Reproducibility: | > 100mg/L: < 5% reading; < 100mg/L: < ±1mg/L; |
| Response time (90%) : | adjustable, min. 6min; |
| Test mode:; | timing, equal interval, manual |
| Reagent consumption: | 24 samples are measured every day, and reagents need to be purchased only once a year; |
| 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 way 24V1A relay high and low point control; |
| Data transmission mode: | RS232, RS485; |
| Display: | 8.0-inch LCD touch screen, resolution 800×600; |
| Data storage: | five years of valid data; |
| Operating temperature: | +0 ~ 40°C; |
| Power supply: | 220±10%VAC; 50-60Hz; |
| Power consumption: | about 100VA; |
| Size: | 490×1340×375mm; |
| Weight: | about 45Kg. |
System Features
· A single measurement only needs 1mL reagent, low operating cost and less maintenance work.
· 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 chemical digestion time can be adjusted, and the determination process and results meet national standards and industry standards.
· All imported devices and innovative analytical flow path design and reagent formulation ensure measurement reproducibility, which can reach 5% at present.
· 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.
