Laboratory Charge Analyzer
Residual Chlorine Analyzer

Chemtrac, Inc./ Products/ HydroACT Series/ HydroACT Series


HydroACT Series


The HydroACT analyzer offers a wide range of customizable capabilities to suit any user’s requirements: from a basic analyzer with a single sensor and analog output, to a more comprehensive solution consisting of a controller with multiple sensors, several chemical feed control outputs, and digital communications (Modbus or PROFIBUS). Other optional features include analog and digital I/O, data logging, and remote access over LAN or GSM modem. The versatility of the HydroACT platform helps ensure a more affordable and flexible solution by allowing the user to purchase only the specific hardware and firmware components that they actually need, while allowing for upgrades to be performed at a later time if application requirements happen to change. The HydroACT analyzer is available in three versions. Each version offers different levels of I/O capability.

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
Isolated universal I/O
 Nema 4X/IP65
 Wall & panel mount
 High resolution display
Graphical trending
On/Off threshold control optional optional optional
Advanced control (e.g. PID) optional optional optional
Color display  
Customizable data logs  
MicroSD card download  
Remote (Internet) access    optional optional
PROFIBUS, Modbus   optional optional

*Sensors, I/O, and relays are all optional and must be specified at time of ordering. See specifications on back for important details.

Sensors Ranges Number of Available Parameters
Free Chlorine 2, 5, 10, 20, 200 mg/L 1 (Free Cl)
Total Chlorine 2, 5, 10, 20 mg/L 1 (Total Cl)
Chlorine Dioxide 0.5, 2, 5, 10, 20 mg/L 1 (CIO2)
Chlorite 2 mg/L 1 (Chlorite)
 Ozone  0.2, 0.5, 2, 5, 10, 20 mg/L  1 (O3)
 pH with Temp 0-14 2 (pH, Temperature)
ORP -1999 to 1999 mV 1 (ORP)
 TSS/NTU  50-4,000 NTU, 0-20 g/L  3 (% solids, mg/L (or ppm), NTU)
 Streaming Current  -1000 to 1000 SCV  3 (SCV, Motor RPM, Signal Health)
UV254 0-100% UVT, 0-2 UVA 2 (UVT, UVA)
Conductivity 0-1,000 mS/cm2 2 (Conductivity, Temperature)
Torodial Conductivity 0-2,000 mS/cm2 2 (Conductivity, Temperature)
Dissolved Oxygen 0 to 50 mg/L
0-450% Saturation
3 (mg/L, % Saturation, Temp)
Particle Counter 2 to 100 micron 6 (Up to 6 Size Bins – counts or ppb)
External Inputs User Defined 1 (User Defined)
Peracetic Acid    

 HydroACT Features HA2 HA4 HA8
Power 100-240 VAC / 0.25 A or 12 VDC / 0.8 A (standard) or 24 VDC (optional)
Display 4.3”, 480×272, 8 bit, grayscale 4.3”, 480×272, 24 bit, color
Sensor Options Free Cl, Total Cl, Cl Dioxide, Chlorite, Ozone, pH with Temperature, ORP
SCM, UV254 organics, TSS/NTU, DO, Conductivity, Particle Counter
External Input (optional) 4-20 mA, 4-20 mA loop-powered, 0-2 VDC, 0-10 VDC, +/- 2000 mV for pH / ORP / ISEs, Pt100, pulse and Modbus
Analog Outputs (optional) Up to 2 Up to 4 Up to 8
Menu configurable outputs: 0-20 mA, 4-20 mA, 0-10 VDC, 0-1.25 VDC (Note: unused sensor inputs can be used as outputs)
Relays (optional) Up to 4 Up to 8 Up to 16
SPST, electromechanical, 380 VAC, 6 A max
Digital Inputs (optional) Up to 4 Up to 8 Up to 16
Alarms & Thresholds 2 user-configurable alarms & thresholds with deadband and delay for each parameter and control output
Control Loops (optional) Up to 2 Up to 4 Up to 8
Control Types (optional) High / Low Threshold PID (with start delay and SP ramping options), feed forward (NTU/UV),
flow pacing, high/low threshold, timer
Communication (optional) Modbus ASCII/RTU (RS485), Modbus TCP (Ethernet), PROFIBUS DP
Data & Event Logging 1,000 event / status records
stored in internal memory
1 million records stored internally
storage expandable with MicroSD card
Modem (optional) None GSM / GPRS / 3G intergrated modem
Remote Access (optional) None Internet browser access, alerts and reports via email (requires ethernet or modem card)
Enclosure ABS flame retardant, NEMA 4X / IP65
Dimensions & Weight HA2 & HA4: 9 in (230 mm) x 12.2 in (309 mm) x 4.1 in (103 mm); 4.4 lbs (2 kg)
HA8: 18 in (460 mm) x 12.2 in (309 mm) x 4.1 in (103 mm); 4.4 lbs (2 kg)
HydroACT Series Version Languages Size Date
HydroACT Series Data Sheet

HydroACT Series Data Sheet

1.3 MiB 06/29/2017

Laboratory Charge Analyzer
Residual Chlorine Analyzer


Chemtrac Incorporated
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