The Chemtrac HydroACT Reagentless Chlorine Analyzer takes online disinfection monitoring to a new level of reliability by offering industry-leading performance, an excellent track record of EPA Method 334.0 compliance, reduced pH dependency, and no requirement for zero calibration. Chemtrac’s line of amperometric membrane-covered Free and Total Chlorine sensors have no moving parts, no bottles of reagent to change out monthly, and quarterly maintenance takes less than five minutes to perform.
Having accurate, reliable, and real-time chlorine monitoring, both in the water treatment plant, and in the distribution system, is critical. Check out this two-minute customer testimonial video profiling a municipality that decided to use Chemtrac chlorine analyzers throughout their distribution system. This was only after the operations personnel first experienced the reliability of the units that were installed in the plant, and then realized over time just how easy the analyzers were to maintain.
The Chemtrac HydroACT Reagentless Chlorine Analyzer takes online disinfection monitoring to a new level of reliability by offering industry-leading performance, an excellent track record of EPA Method 334.0 compliance, reduced pH dependency, and no requirement for zero calibration. Chemtrac’s line of amperometric membrane-covered Free and Total Chlorine sensors have no moving parts, no bottles of reagent to change out monthly, and quarterly maintenance takes less than five minutes to perform. HydroACT offers a versatile solution to your disinfection monitoring needs with the flexibility to accept additional sensors, as well as offering expandable I/O and PID control loops.
The HydroACT Chlorine Analyzer standard configuration includes version HA2 analyzer, 1 sensor (Free or Total Chlorine), 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.
|Analog output limit*||2||4||8|
|Digital Input limit*||4||8||16|
|On/Off threshold control||optional||optional||optional|
|Advanced control (e.g. PID)||optional||optional||optional|
|Data logging and download||•||•|
|Remote (Internet) access||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 Counter
|Available 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 userconfigurable 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 Sensor Probe
|Type||Membrane-covered amperometric three-electrode system|
|Measured||Free residual chlorine or total residual chlorine|
|Probe Ranges||0.01 – 2, 0.01 – 5, 0.01 – 10, or 0.01 – 20 mg/L
0.01 – 200 mg/L (Free residual chlorine only)
|Resolution||0.01 mg/L (ppm)|
|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 4 – pH 9 (Free), pH 4 – pH 12 (Total)|
|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||Manual using DPD|
|Housing Material||PVC, silicone, polycarbonate, stainless steel|
|Dimensions||Diameter approx. 0.98 in., length 6.89 in.|
|Membrane:||Annually (approx.) depending on water quality|
|Electrolyte:||3 – 6 months|
|Interferences||Ozone and chlorine dioxide. 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.
|Understanding On-line Amperometric Chlorine Measurements||700.15 KB||DownloadPreview|
|Reagentless Chorine Analyzer Case Study||1.71 MB||DownloadPreview|
|Quick Start For HydroACT with Chlorine||2.03 MB||DownloadPreview|
|Membrane Cap Ordering Info||131.21 KB||DownloadPreview|
|HydroACT Residual Chlorine Dioxide Analyzer||447.94 KB||DownloadPreview|
|HydroACT Residual Chlorine Analyzer – Data Sheet||1.12 MB||DownloadPreview|
|HydroACT 4 Free Chlorine Operations Manual||3.39 MB||DownloadPreview|
|Free Chlorine Residual Hints & Tips||449.94 KB||DownloadPreview|
|Comparison Of On-Line Chlorine Analyzers||1.00 MB||DownloadPreview|
Having accurate, reliable, and real-time chlorine monitoring, both in the water treatment plant, and in the distribution system, is critical.
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.
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.
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.
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.