Model | ZD-20A | ZD-50A | ZD-200A | ZD-200AS | ZD -400A | ||
Measurement principle | 90˚ Scattered light | ||||||
Measuring range (NTU) | 0~20 | 0~50 | 0~200 | 0~200 | 0~200,200~400 | ||
Indication accuracy | 0.01 | 0.01 | 0.01 | 0.1 | 0.01 | ||
Indication stability | ±1.5%(F.S 30min) | ||||||
Zero drift | ±1.5%(F.S 30min) | ||||||
Repeatability (linearity error) | ≤2% | ||||||
Indication error (basic error) | ±8% | ±6% |