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The analysis method of the online automatic monitoring instrument for ammonia nitrogen and water quality is salicylic acid spectrophotometry, which conforms to the national standard "HJ536-2009 Determination of ammonia nitrogen in Water quality salicylic acid spectrophotometry", belongs to the national class A method for ammonia atmosphere monitoring, ensures the accuracy and effectiveness of monitoring data, and is specially designed for the monitoring needs of pollution source water discharge.
Measuring range | (0~5), (0~10), (0~25), (0~50), (0~125), (0~250) mg/ |
Zero drift | ±0.02mg/L |
Range drift | ±1.0%F.S. |
Indication error |
20%FS±8.0% 50%FS±5.0% 80%FS±3.0% |
The lower limit of quantification | 0.15mg/L |
Repeatability | ≤2.0% |
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 |
0perating temperature | (5~35) ℃ |
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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