Method: TPPS4 spectrophotometry

Measuring range: 0.00-3.00mg/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 is mixed with the conditioner, the cadmium in the sample reacts with the indicator in the presence of an alkaline environment and the indicator (TPPS4) to form a colored complex, and the analyzer detects the color change, and the This change is converted into cadmium value and output. The amount of colored complex produced is equivalent to the amount of cadmium.

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.