2100plus ammonia nitrogen water quality online analyzer-j9九游会官方

application areas

the 2100plus ammonia nitrogen water quality online analyzer is designed for online monitoring of ammonia nitrogen content in various water sources, including surface water, groundwater, water supply sources, municipal water supply, industrial wastewater, and municipal sewage.

detection principles

ammonia gas-sensitive electrode method: under alkaline conditions, ammonium ions in water are converted to ammonia. the generated ammonia and free ammonia pass through the semi-permeable membrane of the ammonia gas-sensitive electrode, causing changes in electrode potential. according to the nernst equation, under constant ionic strength, the measured electromotive force is linearly related to the logarithm of the ammonia nitrogen concentration in the water sample. thus, the ammonia nitrogen content in the sample can be determined from the measured potential value.

salicylic acid spectrophotometry: in the presence of an alkaline medium and a catalyst, ammonia and ammonium ions in water react with salicylate to form a colored compound. the absorbance of this substance is proportional to the ammonia nitrogen content. the absorbance is measured at a specific wavelength.

nessler's reagent spectrophotometry: ammonia nitrogen, existing in the form of free ammonia or ammonium ions, reacts with nessler's reagent to produce a colored compound. the absorbance of this substance is proportional to the ammonia nitrogen content. the absorbance is measured at a specific wavelength.

features

low reagent consumption, resulting in low operating costs.

modular design for easy operation and simple maintenance.

patented intelligent dilution with automatic range switching function.

equipped with power-off protection and automatic recovery functions.

flexible editing of analysis, calibration, quality control, and other processes.

ultra-high precision syringe pump to ensure accurate quantification of samples and reagents.

automatic and remote quality control functions, including standard solution verification and spike recovery test.

technical specifications

detection principle: optional ammonia gas-sensitive electrode method, salicylic acid spectrophotometry, or nessler's reagent spectrophotometry.

detection range: 0~10/150 mg/l, with additional selectable ranges.

measurement modes: periodic mode, controlled mode, hourly mode, continuous mode, manual mode.

verification modes: remote verification, manual verification, automatic verification (triggered periodically or by exceeding limits).

signal output: 4~20 ma, rs232 / rs485.

environmental requirements: 5~40 ℃, rh≤95%.

power requirements: 220±22 vac, 50±0.5 hz.

cabinet dimensions: approximately 520 mm (w) × 380 mm (d) × 800 mm (h).

instrument weight: approximately 45 kg (excluding reagents).