XT-IV total phosphorus online water quality analyzer

Technical specifications

• Method: molybdate spectrophotometry HJ/T103-2003; 《total phosphorusautomatic water quality analyzertechnical requirements》(HJ/T 103-2003); 《water qualitytotal phosphorusonlineanalyzer operating instruction(reference《water quality total phosphorusonlineanalyzer requirements and test method》(draft for comments))》(CNEMC-03-ZJZX-006-2023).
• Measuring range: 0 mg/L–0.5 mg/L, 0 mg/L–1 mg/L, 0 mg/L–2mg/L, 0 mg/L–5 mg/L, 0 mg/L–10 mg/L, 0 mg/L–20 mg/L, 0 mg/L–50 mg/L, 0 mg/L–100 mg/L(otherrangeexpandable).
• Repeatability: ≤ ±2%.
• 24hconcentrationdrift: ≤± 0.01mg/L; 24hconcentrationdrift≤± 1%.
• indicationerror: ≤ ± 5 %.
• limit of quantitation: ≤ 0.02mg/L.
• memory effect: 80%→20% ≤±0.04mg/L; 20%→80%≤±0.16mg/L.
• voltage influence: ≤ ± 5 %.
• Ambient temperatureinfluence: ≤ ± 5 %.
• linearity: ≤ ±10%.
• real-sample comparison: real sampletotal phosphorus<0.4 mg/L, ≤ ± 0.04 mg/L; real sampletotal phosphorus≥0.4 mg/L, ≤ ± 10 %.  
• data validity: ≥90%.
• consistency: ≥90%.
• waste-liquid separation Functions.
• standard-solution check Functions.
• spike recovery Functions.
• fault reset and power restoration, the analyzer automatically discharges residual reagents, automatic cleaning, automatically resets to restart the test Functions.
• alarms and power loss do not cause data loss.
• outputretained sample, triggered sampling Functions.
• reagent-low alarm, component-fault alarm, sample-fault, over-limit and other alarms Functions.
• touchscreendisplay and command input.
• sampling cycle: time interval(10 min–9999 minfreely adjustable) and on the hourmeasurementmode.
• calibration interval: 1–99adjustable to any interval and time of day.
• maintenance interval: typically once a month, about 30 min.
• output: 1-channel national-standard 212 RS-232, 1-channel Mod-Bus RS-232(RS-485), 1-channel 4 –20 mA.
• Power supply: AC220±10% V, 50±10% Hz, 5 A.
• dimensions: 1500 mm×500 mm×450mm(×× D).
• environmentrequirements: Ambient temperature: 5℃–40℃; temperatureadjustable indoor, recommendedtemperature25 ℃–28 ℃; humidity≤90% RH(non-condensing).