Method: diphenylcarbazide spectrophotometry

Measuring range: 0.00-2.00mg/L  0.1-10.00mg/L

Accuracy: ≤±10% when ≥0.2 mg/L;  ≤ ±0.02 mg/L when <0.2 mg/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)

After the water sample and the conditioner are mixed, the hexavalent chromium reacts with the indicator in the presence of an acidic environment and the indicator to form a colored complex. The analyzer detects the color change and converts this change into The value of hexavalent chromium comes out. The amount of colored complex produced is equivalent to the amount of hexavalent chromium.

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.