Measurement principle: Ammonium ions (NH4+) are stored in an alkaline aqueous solution and can be converted into ammonia gas (NH3) at a sp/ecific partial pressure by alkalization. After a specific partial pressure of ammonia (NH3) diffuses into the sensor, a specific pH value is formed. The change in pH value can be converted to the concentration of ammonium ions.

Measuring range	0.01ppm –17000 ppm NH3
Resolution	0.01,0.1,1
Accuracy	±0.01
Interfere	Volatile amine
Response speed	Achieve 95% response in 30 seconds
Storage	Long term: dry storage; Short term: stored in ammonia solution;
pH range	>11 pH
Output Impedance	20-50MΩ
Maintenance and cleaning	Adjust pH>11 with diluted ammonia standard solution
Reference electrode	Replace the electrode membrane cap as needed
Material	ABS+PVC
Membrane head	The membrane head can be replaced
Application	High purity water from power plants, fish pond water, seawater,
Unit selection	wastewater, electroplating, biological samples.
Temperature range for use	mg/L,ppm,ppb,g/L,mmol/L,%
Temperature resolution	0 - 60.0 °C
Temperature display	0.1 °C
Calibration	Manual/Automatic
Standard liquid	1-point calibration, 2-point calibration, maximum 3-point calibration
Calibration method	0,0.1,1,10,100,1000,10000,100000
Electrode	Automatic calibration of standard solution, manual input of potential value for calibration
Screen	Replaceable electrode (CS6912NH3)
Protection level	20 * 34 mm multi row LCD backlit display screen
Backlight	IP67
Automatic shutdown	Backlight long on (can be turned off)
Power supply	10 minutes
Size	(H×W×D) 185×40×48 mm
Weight	125 g

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