Method: O-phenanthroline spectrophotometry

Measuring range: 0.00-5.00mg/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)

The ferric ions in the water sample are reduced to ferrous ions by hydrogen amine hydrochloride. Under the action of the buffer, the ferrous ions react with o-phenanthroline to form a colored complex. The analyzer detects the color change. And convert this change into the total iron value output. The amount of colored complexes produced is equivalent to the total amount of iron.

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.