Measuring range: 10-1500mg/L BOD

Accuracy: ≤±10% when ≥50mg/L;  ≤ ±5mg/L when <50mg/L

Repeatability: ≤±5%;

Stability: ≤±10% within 24h;

Measurement period: The minimum measurement period is 30 minutes,

The color rendering time can be modified arbitrarily within 5～120min

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 supply: AC220±10% V, 50±10% Hz, 5A;

Dimensions: 1570×500×450 (mm)

Water samples, potassium dichromate solution, mercury sulfate (mercury sulfate can eliminate the interference of chloride ions in water samples, because chloride ions can form very stable mercury chloride with mercury ions), silver sulfate solution (silver sulfate can be added as a catalyst Oxidize straight-chain fatty compounds more effectively) The mixed solution is heated to 165°C, the color will change after the dichromate ion oxidizes the organic matter in the solution. The analyzer detects the change in color and converts this change into a BOD value to output . The amount of dichromate ions consumed is equivalent to the amount of oxidizable organic matter.

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.