Method: ammonium molybdate spectrophotometry

Measuring range: 0-500mg/L total phosphorus (classification 0-2mg/L; 0.1-10mg/L; 0.5-50mg/L, 1-100mg/L; 5-500mg/L).

Indication error: ≤0.5mg/L: ±0.05mg/L; >0.5mg/L: ±10%;

Repeatability: ≤±5%;

Stability: ≤±10% within 24h;

Measurement period: The minimum measurement period is 30 minutes, and the color development time can be modified arbitrarily within 5 to 120 minutes;

Sampling period: time interval (10～9999min arbitrarily adjustable) and whole point measurement mode;

Calibration cycle: adjustable at any interval from 1 to 99 days;

Output: 4~20mA (2 channels) RS232, RS485;

Environmental requirements: Indoors with adjustable temperature, recommended temperature +5～28℃; humidity ≤90% (no condensation);

Power source: AC220±10% V, 50±10% Hz, 5 A;

Dimensions: 1570×500×450 (mm)

· The unique design makes this product have lower failure rate, lower maintenance, lower reagent consumption and higher cost performance than similar products;

· Select valve components: select reagent sampling timing;

· Metering components: The accurate metering of reagents is achieved through the visible photoelectric system, which overcomes the quantitative error caused by the wear of the peristaltic pump tube; at the same time, the accurate quantification of trace reagents is realized, each dose is only 1.5 ml, which greatly reduces the amount of reagents used;

· Sampling components: peristaltic pump negative pressure suction, there is always an air buffer between the reagent and the pump tube to avoid corrosion of the pump tube;

· Sealed digestion components: high-temperature and high-pressure digestion system speeds up the reaction process and overcomes the corrosion of equipment caused by the volatilization of corrosive gases in the open system;

· Reagent tube: Imported new-type PTFE transparent hose with a diameter greater than 1.5mm, which reduces the chance of water sample particle blockage.

1. Sampling inspection of large watershed environment.

2. Practical use by laboratory researchers.

3. Monitoring of fishery breeding and breeding environment.

4. Monitoring of sewage outlets of sewage plants.

5. Rivers, lakes, streams, etc.