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Water Quality Analyzers

Online real-time monitoring instruments for pH, turbidity, dissolved oxygen, COD, chlorine, ammonia nitrogen and more parameters.

AQA-PH300 — Online pH & ORP Analyzer

Water Analyzer

AQA-PH300

Online pH & ORP Analyzer

Continuous online pH and ORP monitoring with automatic temperature compensation. IP67 rated panel for harsh outdoor installation.

Key specs

  • pH range: 0–14
  • ORP range: ±2000 mV
  • Accuracy: ±0.05 pH
Drinking waterPool & spaIndustrial effluent
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AQA-TB200 — Online Turbidity Monitor

Water Analyzer

AQA-TB200

Online Turbidity Monitor

Low-range turbidity measurement using 90° scatter nephelometric method per ISO 7027. Automatic cleaning nozzle eliminates manual maintenance.

Key specs

  • Range: 0–200 NTU
  • Resolution: 0.001 NTU
  • Method: ISO 7027 (880 nm)
Filtration controlSource water monitoringProcess control
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AQA-DO100 — Dissolved Oxygen Analyzer

Water Analyzer

AQA-DO100

Dissolved Oxygen Analyzer

Optical luminescence DO sensor with no membrane replacement needed. Measures both dissolved oxygen and temperature simultaneously.

Key specs

  • Range: 0–20 mg/L
  • Accuracy: ±0.1 mg/L
  • Sensor: optical luminescence
Activated sludgeAquacultureRiver monitoring
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AQA-COD500 — COD Online Monitor

Water Analyzer

AQA-COD500

COD Online Monitor

Real-time COD measurement using UV/VIS absorbance method without reagents. Ideal for wastewater discharge compliance and process optimization.

Key specs

  • Range: 0–5000 mg/L
  • Method: UV/VIS (254 nm)
  • Calibration: auto
Wastewater dischargeIndustrial effluentRiver surveillance
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AQA-CL200 — Residual Chlorine Analyzer

Water Analyzer

AQA-CL200

Residual Chlorine Analyzer

Amperometric residual chlorine analyzer for free and total chlorine monitoring. Low reagent consumption with automatic cell cleaning.

Key specs

  • Free Cl₂ range: 0–5 mg/L
  • Total Cl₂ range: 0–10 mg/L
  • Reagent: DPD method
Drinking waterSwimming poolCooling water
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AQA-NH3-200 — Online Ammonia Nitrogen Analyzer

Water Analyzer

AQA-NH3-200

Online Ammonia Nitrogen Analyzer

Ion-selective electrode based online ammonia nitrogen analyzer for wastewater treatment plants and surface water monitoring networks.

Key specs

  • Range: 0–200 mg/L NH₃-N
  • Accuracy: ±5%
  • Calibration: 2-point
WWTP effluentRiver monitoringIndustrial discharge
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ARK81 — Flow Transmitter Controller

Water Analyzer

ARK81

Flow Transmitter Controller

Panel or wall flow controller for a paddle-wheel pulse sensor. Linear accuracy ±1%, repeatability ±0.5%. Outputs 4–20 mA, RS485 and pulse. IP65. Supply DC 24 V, 1 W; a 220 V to 24 V adapter is optional. Ambient −20 to +70°C.

Key specs

  • Range: 0–10 kHz
  • Accuracy: ±1%
  • Output: 4–20 mA / RS485 / pulse
Process dosingWater treatmentFlow batching
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ARK61 — Paddle-Wheel Flow Sensor

Water Analyzer

ARK61

Paddle-Wheel Flow Sensor

Hall-effect paddle sensor, NPN open-collector pulse. Wetted body PP, PTFE or SS316. IP68. Supply DC 5–24 V. Pipe sizes DN15–DN100, with larger lines DN125–DN600 in the order list.

Key specs

  • Velocity: 0.5–6 m/s
  • Accuracy: ±5% · repeatability ±0.5%
  • PP body: 10 bar at 25°C, 1.5 bar at 90°C
  • PTFE body: 10 bar at 25°C, 2.5 bar at 90°C
  • SS316 body: 25 bar at 100°C
Process dosingWater treatmentCooling water
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ARK82 — pH Transmitter Controller

Water Analyzer

ARK82

pH Transmitter Controller

Panel or wall pH controller. Range pH 0.00–14.00, resolution 0.01 pH. Temperature reading 0.00–130.00°C with PT1000 or manual compensation. Outputs 4–20 mA and RS485. IP65. Supply DC 24 V, 1 W. Ambient −20 to +70°C.

Key specs

  • pH range: 0.00–14.00
  • Resolution: 0.01 pH
  • Temperature reading: 0–130°C
Drinking waterPool & spaIndustrial effluent
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ARK83 — ORP Transmitter Controller

Water Analyzer

ARK83

ORP Transmitter Controller

Panel or wall ORP controller. Range ±2000 mV, resolution 1 mV. Outputs 4–20 mA and RS485. IP65. Supply DC 24 V, 1 W. Ambient −20 to +70°C. Takes an ARK63 electrode.

Key specs

  • ORP range: ±2000 mV
  • Resolution: 1 mV
  • Output: 4–20 mA / RS485
DisinfectionPool & spaIndustrial effluent
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ARK62 — pH Electrode

Water Analyzer

ARK62

pH Electrode

ARK62-1 is the pure-water electrode and ARK62-2 the wastewater electrode. Both are listed at pH 2.00–12.00 and 0.00–60.00°C, resolution 0.01 pH, PT1000 compensation, 0.8 MPa, PPS body, 3/4 NPT, 5 m cable.

Key specs

  • pH range: 2.00–12.00
  • Temperature: 0–60°C
  • Pressure: 0.8 MPa
  • Connection: 3/4 NPT
Drinking waterIndustrial effluentCooling water
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ARK63 — ORP Electrode

Water Analyzer

ARK63

ORP Electrode

ORP electrode ARK63-3, −2000 to 2000 mV, resolution 1 mV. Platinum sensing tip, PPS body, outline φ12×120. 0.8 MPa, 3/4 NPT, 5 m cable.

Key specs

  • ORP range: −2000–2000 mV
  • Resolution: 1 mV
  • Pressure: 0.8 MPa
  • Connection: 3/4 NPT
DisinfectionPool & spaIndustrial effluent
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ARK84 — Conductivity Transmitter

Water Analyzer

ARK84

Conductivity Transmitter

Panel or wall conductivity controller. Four cell constants: K=0.01, 0.1, 1.0 and 10. Temperature reading 0.00–130.00°C with PT1000 or manual compensation. Outputs 4–20 mA and RS485. IP65. Supply DC 24 V, 1 W. Ambient −20 to +70°C.

Key specs

  • K=0.01: 0.055–20 μS/cm
  • K=0.1: 0–200 μS/cm
  • K=1.0: 1.0–2000 μS/cm
  • K=10: 10–20000 μS/cm
Pure waterCooling waterProcess dosing
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ARK64 — Conductivity Electrode

Water Analyzer

ARK64

Conductivity Electrode

Two-pole conductivity electrodes. Cell constants 0.01, 0.1, 1.0 and 10. Accuracy ±1%. Pressure 1.0 MPa. Standard cable 5 m. Pipe 3/4 in and larger.

Key specs

  • ARK64-1: 0.055–20 μS/cm, 0–120°C, SS316
  • ARK64-2: 0–200 μS/cm, 0–120°C, SS316
  • ARK64-3: 1–2000 μS/cm, 0–80°C, platinum
  • ARK64-4: 10–20000 μS/cm, 0–80°C, graphite
Pure waterCooling waterProcess dosing
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