Residual Ozone Analyzer
with HydroACT Multiparameter Analyzer
touchscreen hi-res Color Display
LIVE
titration
charting
Data logging and
export
multilingual
(english, spanish, etc.)
The HydroACT Residual Ozone Analyzer utilizes the very latest and best ozone sensors available in the world today. The membrane-covered sensor is insensitive to changing pH and interference from other oxidants, uses no reagents, is extremely stable, and has a reduced maintenance requirement compared to most other Ozone sensors.
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Overview
The HydroACT Residual Ozone Analyzer utilizes the very latest and best ozone sensors available in the world today. The membrane covered sensor is insensitive to changing pH and interference from other oxidants, uses no reagents, is extremely stable, and has a reduced maintenance requirement compared to most other Ozone sensors. HydroACT offers a versatile solution to your monitoring needs with the flexibility to accept additional sensors, as well as offering expandable I/O and PID control loops.
dashboard
sensor screen
chart view
diagram screen
Videos
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Case History – Auburn WTP Utilizes Chemtrac Chlorine AnalyzersTestimonialA Water Treatment Plant in Auburn, AL has the need to monitor free chlorine onsite, as well as at remote locations in the distribution system, where they do…
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Water Solutions Unlimited and Chemtrac Team-up to Provide Instrumentation SolutionsTestimonialChemtrac values having outstanding relationships with their sales reps, like Water Solutions Unlimited, to provide water treatment analyzer solutions to plants throughout the country…and around the world.
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Chemtrac Chlorine AnalyzerDemonstrationThe Chemtrac Chlorine Analyzers take online disinfection monitoring to a new level of rleiability. They are accurate, pH independent, and offer a low cost of ownership with a…
Q & A’s
Specifications
Features
Description
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Type
Membrane-covered amperometric two-electrode system
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Measured
Residual Ozone
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Probe Ranges
0.05 – 0.2, 0.05 – 2, 0.05 – 5, or 0.05 – 10 mg/L (ppm)
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Resolution
0.01 mg/L (ppm)
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Reproducibility
±5%
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Working Electrode
Gold cathode
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Counter Electrode
Silver/silver halide
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Membrane Material
Micro-porous hydrophillic membrane
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Flow Rate
15 to 60 L/hr.
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Stability
-1% per month, (without calibration)
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Temperature Compensation
Automatically by integrated thermistor (ATC)
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Temperature Range
> 0 up to 50° C
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pH Range
pH 2 – pH 11
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Permissible Over-Pressure
7.25 psi (0.5 bar)
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First Polarization Time
120 min.
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Re-Polarization Time
30 min.
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Zero-Point Adjustment
Not necessary
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Calibration
Manual using a suitable ozone test kit
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Housing Material
PVC, silicone, polycarbonate, stainless steel
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Dimensions
Diameter approx. 0.98 in., length 6.89 in.
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Replacement Intervals (Membrane)
Annually
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Replacement Intervals (Electrolyte)
Every 3 to 6 months
HydroACT Features
HA2
HA4
HA8
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Sensor limit*
2
4
8
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Analog output limit*
2
4
8
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Relay limit*
4
8
16
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Digital Input limit*
4
8
16
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Isolated universal I/O
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Nema 4X/IP65
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Wall & panel mount
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Multilingual
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High resolution display
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Graphical trending
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On/Off threshold control
optional
optional
optional
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Advanced control (e.g. PID)
optional
optional
optional
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Color display
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Customizable data logs
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MicroSD card download
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Remote (Internet) access
optional
optional
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PROFIBUS, Modbus
optional
optional
*Sensors, I/O, and relays are all optional and must be specified at time of ordering.
Downloads
| Title | Category | Upload Date | File Size | Download |
|---|---|---|---|---|
Membrane Cap Ordering Info
|
Chlorine (Free or Total), Chlorine Dioxide, Disinfectant Analyzers (Chlorine, Ozone, etc.), Ozone | Nov 3, 2025 | 131 KB | Download |
|
HydroACT Residual Ozone Analyzer
|
Disinfectant Analyzers (Chlorine, Ozone, etc.), HydroACT Multiparameter Analyzer, Ozone | Nov 3, 2025 | 354 KB | Download |
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HydroACT 4 Ozone Operations Manual
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Disinfectant Analyzers (Chlorine, Ozone, etc.), HydroACT Multiparameter Analyzer, Ozone | Nov 3, 2025 | 3 MB | Download |
Membrane Cap Ordering Info
HydroACT Residual Ozone Analyzer