application area
the tih201 ammonia ambient air online analyzer is designed for online monitoring of ammonia concentration in ambient air and air pollution sources.
detection principle
ammonia in ambient air is absorbed by the absorption solution. in the presence of an alkaline medium and a catalyst, it reacts with salicylate to produce a colored compound. the absorbance of this substance is proportional to the concentration of ammonia, and the absorbance is measured at a specific wavelength.
features
the absorption module and reaction module undergo constant temperature treatment.
calibration can be performed using gaseous or liquid ammonia standard samples.
the pre-processing unit is designed for low maintenance, with a maintenance cycle exceeding six months.
high selectivity in chemical reaction, and a long optical path flow cell ensure a low detection limit.
it employs a separation spiral tube trap design, and the gas-liquid separation device achieves the function of separating gas and liquid.
embedded control system with programmable software design; users can configure it according to various monitoring requirements.
equipped with intelligent functions such as automatic zero adjustment, calibration, measurement, cleaning, maintenance, and recovery. simple operation and maintenance without the need for professional training.
technical specifications
detection principle: long path absorption spectrophotometry .
detection range: 60 ppt ~ 1 ppm, additional ranges available .
detection duration: 1 ~ 3 minutes (depending on the detection range) .
signal output: rs232 / rs485
ambient temperature: 5 ℃ ~ 40 ℃
power requirements: 110 / 220 vac, 50±0.5 hz
instrument weight: approximately 10 kg (excluding reagents) .
instrument dimensions: approximately 450 mm (w) x 560 mm (h) x 150 mm (d)