Method: diacetyl oxime spectrophotometry

Measuring range: 0.00-2.00 mg/L 0.10-10.00 mg/L;

Accuracy: ≤±10% when ≥0.2 mg/L;

When <0.2 mg/L, it does not exceed ±0.02 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 source: AC220±10% V, 50±10% Hz, 5A;

Dimensions: 1570×500×450 (mm)

The water sample is oxidized by the oxidant ammonium persulfate, and in the presence of an alkaline environment and the indicator (diacetyl oxime), it reacts with the indicator to form a colored complex. The analyzer detects the color change, and This change is converted into the total nickel value and output. The amount of colored complex formed is equivalent to the total amount of nickel.

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.