Shanghai Kelan Online Phosphate Analyzer

Detailed Introduction of KL-3800 Online Phosphate Analyzer

1. Overview:

KL-3800 online phosphate analyzer is a high-precision online automated instrument with functions such as automatic completion of chemical reactions, optical detection, graphic and textual display, control output, and data storage; The instrument adopts a color LCD display, which displays measurement results, system information, and a fully Chinese menu operation interface in rich colors, text, charts, and curves; The combination of humanized design concept and * has achieved the performance * and product competitiveness of this instrument.

2、 Characteristics:

1. Low detection limit, very suitable for low phosphorus detection and control;

2. The online phosphorus meter that truly uses a monochromatic cold light source has a long service life for the light source;

3. The instrument has the function of recording historical curves and can store data for 30 days;

4. Support measurement of multiple water samples (optional 1-6 channels);

5. Apart from adding reagents and standard samples, this instrument has no workload and truly achieves maintenance free operation.

3、 Technical parameters

1. Measurement range: 0~2000ug/l, 0~10mg/l optional

2. Accuracy: ± 1% F.S

3. Reproducibility: ± 1% F.S

4. Stability: Drift ≤ ± 1% F.S/24 hours

5. Response time: The initial response time is 4 minutes, and it takes at least 6 minutes to reach 98%

6. Sampling period: about 3 minutes per channel

7. Water sample conditions: flow rate:>100 ml/min

Temperature: 10~45 ℃

Pressure: 10 kPa~100 kPa

8. Environmental conditions: Temperature: 5-50 ℃

Humidity: 10%~85% RH

9. Reagent consumption: approximately 3.0 liters per month

10. Current output: 4~20mA (programmable within the range of 0~22mA, with independent output from each channel of multi-channel instruments)

11. Alarm output: Relay normally open contact (220V/1A), shared by multiple channels

12. Power supply: AC220V ± 10% 50HZ

13. Power consumption: ≈ 50VA

14. Dimensions: 720mm (height) x 460mm (width) x 300mm (depth)

15. Hole size: 665mm × 405mm

4、 Instrument structure and working principle

1. Chemical principles

Under certain acidity conditions, phosphate reacts with molybdate and metavanadate to produce yellow phosphovanadium molybdic acid (commonly known as phosphovanadium molybdenum yellow). Silicates also undergo similar reactions under these conditions, but the acidity is much lower than the acidity required for the above reaction. By controlling the acidity and reaction time, silicon interference can be minimized. When the silicon (SiO2) concentration of this instrument is 5mg/L, the interference generated is less than 0.2mg/PO43-.

The maximum absorption of the above-mentioned color products is around 400nm, and this instrument uses a specially designed 420nm light source for measurement.