1TW-5298 ammonia nitrogen analyzer manufacturerInstrument Introduction

Ammonia nitrogen (NH3-N) exists in water in the form of free ammonia (NH3) or ammonium salt (NH4), and the composition ratio of the two depends on the pH value and water temperature of the water. When the pH value is high, the proportion of free ammonia is high. On the contrary, if the proportion of ammonium salts is high, the water temperature will be the opposite. The main sources of ammonia nitrogen in water are the decomposition products of nitrogen-containing organic compounds in domestic sewage by microbial action, certain industrial wastewater such as coking wastewater and synthetic ammonia fertilizer plant wastewater, as well as agricultural drainage. In addition, in anaerobic environments, nitrite present in water can also be reduced to ammonia by microbial action. In aerobic environments, ammonia in water can also be converted into nitrite and even further into nitrate. Measuring various forms of nitrogen compounds in water can help evaluate the pollution and self purification status of water bodies. Fish are sensitive to ammonia nitrogen in water, and high levels of ammonia nitrogen can lead to fish death.

The instrument uses Nessler's colorimetric method to measure ammonia nitrogen in water, which has the characteristics of easy operation and high sensitivity. This instrument is widely used in environmental monitoring, sewage treatment, colleges, research institutions and other departments.

2TW-5298 ammonia nitrogen analyzer manufacturerInstrument features

1) The measuring instrument is a cold light source and narrowband interferometric optical system with good optical stability.

2) It can save 10 standard curves and 99 measured values each, without losing them when powered off.

3) LCD large screen LCD display, easy and intuitive operation.

4) Printing function: It can print test records immediately or query records for printing.

5) USB interface, can be connected to a computer.

　　3Technical indicators

1) Measurement range: (0～5)mg/L、(5～25)mg/L。 (Excess range can be measured after dilution)

2) Indication error: ≤ ±3%F.S

3) Repeatability: ≤ 3%

4) Optical stability: The instrument's absorbance value drifts less than 0.002A within 20 minutes

5) External dimensions: 340mm x 250mm x 130mm (width x depth x height)

6) Weight: 4kg

7) Power consumption: Host<10W

8) Normal usage conditions:

a) Environmental temperature: 5-40 ℃

b) Relative humidity: ≤ 85%

c) Power supply: AC(220±22)V； (50±0.5)Hz

d) No significant vibration or electromagnetic interference, avoid direct sunlight.