SY-1091 Ammonia Nitrogen Water Quality Online Detector

(1) Working principle: The SY-1091 ammonia nitrogen online automatic monitoring instrument adopts the industry standard HJ536-2009 for the determination of ammonia nitrogen in water quality (salicylic acid spectrophotometric method). In the presence of sodium nitroprusside, ammonia and ammonium ions in water react with salicylates and hypochlorous acid ions to form blue compounds. The absorbance is measured using a spectrophotometer at 697nm using a photoelectric colorimetric method to determine the content of ammonia nitrogen in the water sample, which is displayed on a screen.

(2) The SY-1091 ammonia nitrogen online automatic monitoring instrument has the following basic functions:

- Can set, proofread, and display time, including year, month, day, hour, and minute;

- It has alarm functions for system abnormalities such as equipment power failure, instrument leakage, and inability to import samples into the reactor, and displays the fault content. At the same time, stop running until the system is restarted;

After each measurement, the pre-treatment device, instrument pipelines, valves, and other components are automatically cleaned;

- Automatic protection for power and water outages, as well as automatic recovery for incoming and outgoing power;

- Regular cleaning and sampling functions;

Touchscreen viewing is more intuitive and easier to operate.

Measurement method: Salicylic acid spectrophotometric method (national standard HJ536-2009)

Test range: 0-300mg/L (can be expanded according to requirements)

Detection limit: 0.05 mg/L

Resolution:<0.01 mg/L

Accuracy: The indication error shall not exceed 10%

Repeatability: Relative standard deviation not exceeding 10%

Zero drift: ≤± 5%

Range drift: ≤± 5%

Dissolving temperature: 40 degrees Celsius, adjustable

Sample flow rate: minimum 0.5L/h

User maintenance: Maintenance interval>1 month, approximately 1 hour per month; Easy and convenient maintenance

Environmental impact: Water quality will not be damaged under extreme conditions such as high suspended solids, impurities, and floating debris

Communication interface: RS232 digital interface, 4-20mA analog signal output

Dimensions: Height 1400 x Width 560 x Depth 450mm

Weight: 40 kilograms

Power supply: AC (220 ± 10%) V, (50 ± 10%) Hz, 5A

Power: 80 watts

Environmental temperature: 5-40 degrees Celsius

Environmental humidity: ≤ 90% (non condensing)

Atmospheric pressure: 86 kPa to 106 kPa

Sampling outlet: distance L ≤ 15m, drop height H ≤ 6m