Chlorine Dioxide
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Description
The Chlorine Dioxide Analyzers can be used for whatever water applications where chlorine dioxide residuals need to be monitored and/or controlled. They consist of a HydroACT multi-parameter analyzer, a chlorine dioxide probe sensor, and a sample flow cell.
There are options for the HydroACT configurations depending on how many sensor inputs are necessary, output and communication needs, and control requirements.
Standard flow cells are for a single probe. There are also options for two and three probe flow cells.
Standard Features
- Includes analyzer, chlorine sensor, flow cell, 1 analog output, 1 year consumables
- Accurate chlorine dioxide measurement
- No moving parts, no reagents
- Event logging
Optional Features
- Expandable sensor inputs and I/O
- Color display and data-logging with microSD card download
- Modbus or PROFIBUS communications
- Chemical feed control capability (e.g. PID)
Benefits
- Lower total cost of ownership
- Easy set up and maintenance
- Intuitive menu and programming functions
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Specifications
The HydroACT Chlorine Dioxide Analyzer standard configuration includes version HA2 analyzer, 1 sensor, 1 analog output, and 1 year
consumables. Optional features include relays, digital inputs, digital comms, expanded number of sensor inputs and analog outputs, color display, and data
download capability. Maximum I/O capabilities and certain features are specific to the different versions of HydroACT as detailed below.HydroACT Features HA2 HA4 HA8 Sensor limit* 2 4 8 Analog output limit* 2 4 8 Relay limit* 4 8 16 Digital Input limit* 4 8 16 On/Off threshold control optional optional optional Advanced control (e.g. PID) optional optional optional Color display • • Data logging and download • • Remote (Internet) access optional optional PROFIBUS, Modbus optional optional *Optional configuration limits. See above description for standard configuration of analyzer version & I/O setup. Optional configurations must be specified.
Sensor Options Free Cl, Total Cl, Cl Dioxide, Chlorite,
Ozone, ORP, pH with Temperature, DO,
Conductivity, SCM, UV254 Organics,
TSS/NTU, Particle CounterAvailable Output Types Universal (0-20mA, 4-20mA, 0-10 VDC) Relays (optional) SPST electromechanical relays rated for 380 VAC, 6A max. Alarms & Thresholds: user-configurable alarms and 2 user-configurable thresholds (for control) Chemical Feed Control (optional) HA4 & HA8 only – PID, Feed Forward, Flow Proportional, Timer – multiple loops Communication (optional) Modbus ASCII/RTU (RS485), Modbus TCP (Ethernet), Profibus DP Data Logging (optional) Customizable data logs. 1 million records can be logged internally, and downloaded to MicroSD card. Enclosure ABS flame retardant, IP65, Nema 4X Display 4.3”, 480×272, 24 bit, grayscale
Optional: color (HA4 & HA8 only)Dimensions HA2 & HA4 – 9.0” W x 12.2” H x 4” D
(230 mm W x 309 mm H x 1035 mm D)
HA8 – 18.0” W x 12.2” H x 4” D
(460 mm W 309 mm H x 1035 mm D)Weight HA2 & HA4 – 4.5 lbs (2 kg)
HA8 – 9 lbs (4 kg)Warranty 12 months from date of purchase Chlorine Dioxide Sensor Probe
Type Membrane-covered amperometric three-electrode system Measured Chlorine Dioxide Probe Ranges 0.01 – 2, 0.01 – 5, 0.01 – 10, or 0.01 – 20 mg/L Resolution 0.01 mg/L (ppm) Reproducibility ±5% Stability -2% per month (without calibration) Working Electrode Gold cathode Counter Electrode Stainless steel anode Reference Electrode Silver/silver halide Flow Rate 15 to 60 L/hr. Temperature Range > 41° up to < 113° F (> 5 up to < 45° C) Temperature Compensation Automatically by integrated thermistor (ATC) pH Range pH 2 – pH 11 Permissible Over-Pressure 7.25 psi (0.5 bar) First Polarization Time 120 min. Re-Polarization Time 30 min. Zero-Point Adjustment Not necessary Calibration At the device, by analytical determination Housing Material PVC, silicone, polycarbonate, stainless steel Dimensions Diameter approx. 0.98 in., length 6.89 in. Replacement Intervals Membrane: Annually (approx.) depending on water quality Electrolyte: 3 – 6 months depending on water quality Interferences Ozone and chlorine. Surfactants are partially tolerated *Not suitable for measuring or controlling for dechlorination. Recommended to have a chlorine residual of at least 0.10 ppm at all times.
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Applications
Water treatment
- Disinfection monitoring
- Chlorine Dioxide dosage control
Cooling towers
Swimming pools
Paper machine system microbial control
Legionella control
Food washing -
Downloads
Title Size Download Reagentless Chorine Analyzer Case Study 1.71 MB DownloadPreview Quick Start For HydroACT with Chlorine 2.03 MB DownloadPreview HydroACT 4 Chlorine Dioxide Operations Manual 3.33 MB DownloadPreview -
News
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Videos
Video Testimonial: Chlorine Monitoring in Distribution
Having accurate, reliable, and real-time chlorine monitoring, both in the water treatment plant, and in the distribution system, is critical.
Chemtrac Chlorine Analyzer
The 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 full 12 months between maintenance events. These analyzers are suitable for regulatory reporting purposes when used in compliance with EPA Method 334.
Chemtrac Chlorine Sensor Assembly and Setup
Properly assembling the chlorine sensor is critical to the operation of the chlorine analyzer. This video demonstrates the appropriate way to set up the probe with the electrolyte, and the membrane cap. And this procedure also applies to other membrane-covered sensors, such as total chlorine, chlorine dioxide, chlorite, and ozone.
Chemtrac Chlorine Sensor Flow Cell Setup
The chlorine sensor flow cell is designed to direct the proper sample flow past the membrane in order to ensure accurate and consistent results. This flow cell is also used with a variety of membrane-covered sensors such as free chlorine, total chlorine, chlorine dioxide, chlorite, and ozone.
WTP Prefers “Reagentless” Chlorine Analyzers
A 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 not want to have to use reagents. They fist ordered a Chemtrac Reagent-less Free Chlorine analyzer in 2009, and have since purchased several more for other monitoring locations.
