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KNN300 series online nitrate nitrogen analyzer

KNN300 series online nitrate nitrogen analyzer is an online water quality analyzer developed on the basis of digital water quality analysis platform. Integrated design, using industrial on- line ion selective electrode, digital, intelligent analyzer design concept. The functions of electrode signal detection, temperature detection, automatic compensation and digital signal conversion are realized in the instrument. RS485 signal output, easy networking and system integration, widely used in surface water, pollution sources and other industries.

KNN300 series online nitrate nitrogen analyzer is an online water quality analyzer developed on the basis of digital water quality analysis platform. Integrated design, using industrial on- line ion selective electrode, digital, intelligent analyzer design concept. The functions of electrode signal detection, temperature detection, automatic compensation and digital signal conversion are realized in the instrument. RS485 signal output, easy networking and system integration, widely used in surface water, pollution sources and other industries.

1)    Characteristics of KNN300 series online nitrate nitrogen analyzer

Integrated design, anti-electromagnetic interference

Industrial Online ion-selective electrode, can work stably for a long time

Temperature, chloride ion (CL) and other multi-parameter compensation algorithm to ensure the accuracy of measurement

Built-in Air Purge automatic cleaning system, greatly reducing the maintenance workload

Stainless steel case, IP68 waterproof grade, suitable for various working conditions

RS485 signal output, Standard Modbus protocol, easy integration, networking

2)    Technical Specifications

Model number KNN300A KNN300B
Measurement parameter NO3-N, pH,temperature NO3-N, pH, CL-, temperature
Method of measurement Ion selective electrode method
Measurement mode Immersion measurement
Measuring range No 3-n: (0.1-1) mg/l, (1-10) mg/l, (10-100) mg/l, (100-1000) mg/L
Cl-: (1 ~ 1000) mg/L
PH: 0 ~ 14
Temperature: (0 ~60) °C
Accuracy ≤±3%
Repeatability ≤2%
Resolution No3-n (minimum range) :0.01 mg/L
Cl-: 0.1 mg/L
Ph: 0.01
Detection limit 0.1 mg/L
Response time ≤60s
Zero Drift (24h) ≤3% F.S.
Range Drift (24h) ≤3% F.S.
Calibration period Three months
Temperature range (0 ~ 60) °C
Protection level IP68
Cleaning mode Compressed air bar
MTBF ≥1440h/Time
Means of communication RS485(Modbus RTU), maximum baud rate 115200 bps
Supply voltage (12/24) V DC
Power consumption < 0.5W
Material Quality Stainless steel, POM
Weight 1.0 kg
Contour dimension 270 mm × φ60 mm

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