XT-IV ammonia nitrogen (NH3-N)online automatic water quality monitor

Technical specifications

• Method: HJ 536-2009 water quality ammonia nitrogen determination salicylate spectrophotometry. ammonia nitrogenonline automatic water quality monitortechnical requirements(HJ/T101-2019).
• Measuring range: 0 mg/L–5.0 mg/L; 0.1–10.0 mg/L; 0.1–15.0 mg/L; 0.2–20.0 mg/L; 1.0–30.0 mg/L; 3–60.0 mg/L, 5–150 mg/L; 10–300 mg/L(otherrangeexpandable).
• Repeatability: ≤2.0%( 0.1 mg/L–10 mg/L ); ≤5 % ( 10 mg/L–150 mg/L).
• 24hconcentrationdrift: ≤ 0.02 mg/L ( 0.1 mg/L–10 mg/L ).
• 24h concentrationdrift: ≤1.0%( 0.1 mg/L–10 mg/L ); ≤2 %( 10 mg/L–150 mg/L).
• indicationerror: ±20%FS, ±8.0%; ±50%FS, ±5.0%; ±80%FS, ±3.0%( 0.1 mg/L–10 mg/L ); ±3 % FS, ( 10 mg/L–150 mg/L).
• limit of quantitation≤ 0.15 mg/L(indicationerror ± 30%), ( 0.1 mg/L–10 mg/L ).
• memory effect80%*FS→20%*FS, ± 0.3 mg/L; 20%*FS→80%*FS, ± 0.2 mg/L( 0.1 mg/L–10 mg/L ).
• p Hinfluence: ±6.0%.
• consistency  ≥90 %.
• data validity  ≥90 %.
• real-sample comparison: ammonia nitrogen＜2.0mg/l, absoluteerror≤0.2mg/l; ammonia nitrogen≥2.0mg/l, relativeerror≤10%.                  
• 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.
• 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).