Ammonia nitrogen online monitoring instrument NH3N-PCZ

·Product Overview

This instrument is designed and manufactured according to the national standard GB7479-1987 for the determination of ammonium in water quality using Nessler's reagent colorimetric method and the technical requirements of the environmental protection industry standard HJ/T101-2003 for ammonia nitrogen water quality automatic analyzer. It has the characteristics of accurate measurement, low detection limit, high reliability, and strong adaptability, and is widely used in environmental protection, production monitoring, and other fields. It is an ideal instrument for environmental monitoring and control.

Detection principle:

The Nash reagent colorimetric method is used to measure ammonia nitrogen in water in the form of free ammonia or ammonium ions. When the alkalinity is strong, ammonia nitrogen mainly exists in the form of NH3. At this time, if the water sample is distilled, NH3 will overflow in the form of gas. The overflowing ammonia gas is collected in the colorimetric cell and measured by acid-base titration or Nessler's reagent method to obtain the corresponding ammonia nitrogen value.

Technical indicators:

Measurement method: Nessler's reagent (high-temperature distillation exclusion) colorimetric method

Test range: (0-10) mg/l, (0-30) mg/l, (0-300) mg/l, (0-500) mg/l

Maximum testing range: 0-500mg/l

Offline detection: 0.02mg/l

Resolution:<0.01mg/l

Accuracy: Standard solution<10%; Water sample<15%

Reproducibility:<5%

Dissolving time: 20 minutes, adjustable

Fault free running time: ≥ 720h/time

Range drift: ± 5% F.S

Sample interval: continuous, 1 hour, 2 hours... 24 hours, trigger

Calibration interval: manually or automatically at selected intervals and times (1-7 days)

Cleaning interval: manually or automatically at selected intervals and times (1-7 days)

Maintenance interval:>1 month, approximately 1 hour each time

Reagent consumption: Approximately 358 samples per set of reagents

Human computer interface: 7-inch, 70000 colors, 800 * 480 resolution, TFT true color touch screen

Printing method: Reserved printer interface, can be connected to an external industrial micro printer (optional)

Storage space: 20000 pieces of data, not lost in case of power failure, automatically overwrite the earliest data when full (can add 40000 pieces of data)

Communication interface: 1 RS232 digital interface or RS485, supporting MODBUS communication protocol or custom protocol

1 analog signal 4-20mA (20mA corresponds to adjustable range)

Preprocessing system: self-cleaning, blowback, and precision filtration functions ensure good representativeness of the sample while avoiding suspended particles from blocking the pipeline, ensuring data continuity. (Optional)

Human computer interface: 7-inch, 70000 colors, 800 * 480 resolution, TFT true color touch screen

Power supply requirements: AC 220V ± 20%, 50Hz ± 1%

Maximum power: 300W

Working environment: Temperature range of 5-40 ℃, relative humidity ≤ 85%

Dimensions: 770 × 600 × 450 (mm)

Weight: 50kg