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The COD water quality online automatic monitoring instrument adopts the dichromate photometric analysis method, which complies with the national standard HJ/T399-2007 "Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion spectrophotometric method" and belongs to the national Class A method for COD monitoring, ensuring the accuracy and effectiveness of monitoring data.
Measuring range | (0~250) mg/L, (30~500) mg/L, (120~2000) mg/L |
Zero drift | ±5 mg/L |
Range drift | ±5%F.S. |
Indication error | ±10.0% |
The lower limit of quantification | 15mg/L |
Repeatability | ≤5.0% |
Measurement period | ≤60min |
Insulation resistance | 20MΩ or more |
MTBF | ≥720h/time |
Interface | RS232 or RS485, 4-20mA analog output |
Size | 520mm×440mm×1450mm (L×W×H) |
Weight | 55Kg |
Type of display screen | Touch screen |
Host | PLC |
Operat ing temperature | (5~40) ℃ |
Working humidity | (20~85) %RH |
Power supply voltage | AC (220±25) V |
Power frequency | (50±0.5) Hz |
Rated power | 100W |
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