Technical Specifications

1. Method basis: Salicylic acid spectrophotometric method.

2. Measurement range: 0.05–500 mg/L ammonia (with ranges of 0.05–8 mg/L, 0.1–30 mg/L, and 5–500 mg/L).

3. Accuracy: not exceeding ±10% or not exceeding ±0.2 mg/L.

4. Repeatability: not more than ±5% or not more than ±0.2 mg/L.

5. Measurement cycle: The minimum measurement cycle is 20 minutes; depending on the site conditions, the color development time can be adjusted within the range of 5 to 120 minutes.

6. Sampling period: adjustable time interval (10–9,999 minutes) and on-the-hour measurement mode.

7. Calibration interval: Adjustable at any time, with intervals ranging from 1 to 99 days.

8. Maintenance Schedule: Typically once per month, with each session lasting approximately 30 minutes.

9. Reagent consumption: less than 0.50 yuan per sample.

10. Outputs: 2 RS-232 channels; 1 channel 4–20 mA.

11. Environmental Requirements: Indoor environment with adjustable temperature; recommended temperature range: +5 to 28°C; relative humidity ≤ 90% (no condensation).

12. Power supply: AC 220±10% V, 50±10% Hz, 5 A.