The HydroACT Streaming Current Analyzer standard configuration includes version HA2 analyzer, 1 DuraTrac 4 sensor, 1 analog output, and 25 feet of interconnect cable. Optional features include relays, digital inputs, digital communications, 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 FeaturesHA2HA4HA8
Sensor limit*248
Analog output limit*248
Relay limit*4816
Digital Input limit*4816
On/Off threshold controloptionaloptionaloptional
Advanced control (e.g. PID)optionaloptionaloptional
Color display 
Data logging and download 
Remote (Internet) access optionaloptional
PROFIBUS, Modbusoptionaloptional

*Optional configuration limits. See above description for standard configuration of analyzer version & I/O setup. Optional configurations must be specified.

Sensor OptionsFree Cl, Total Cl, Cl Dioxide, Chlorite,
Ozone, ORP, pH with Temperature, DO,
Conductivity, SCM, UV254 Organics,
TSS/NTU, Particle Counter
Available Output TypesUniversal (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.
EnclosureABS flame retardant, IP65, Nema 4X
Display4.3”, 480×272, 24 bit, grayscale
Optional: color (HA4 & HA8 only)
DimensionsHA2 & 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)
WeightHA2 & HA4 – 4.5 lbs (2 kg)
HA8 – 9 lbs (4 kg)
Warranty12 months from date of purchase

DuraTrac 4 Streaming Current Sensor

Range-1000 to +1000
Signal GainUser adjustable, 1 to 600x
Zero OffsetUser adjustable
Sample Flow Rate1 to 40 Liters per minute
Gain & Zero OffsetUser adjustable, Manual or Automatic
Repeatability (Cond. Range)*Better than 2% from (10 to 250 uS)
Better than 3% from (250 to 500 uS)
Better than 5% from (500 to 1,000 uS)
Max Pressure20 psi (recommend atmospheric drain)
Probe TypeQuick-replacement cartridge with replaceable sleeve
Sample Connections1” FNPT
Materials Contacting SampleDelrin, viton, stainless steel
Wiring Connections1 ea. shielded, 4 conductor, 22 AWG
Self DiagnosticsMotor – RPM, Signal Health
Power Requirements110 VAC, 1 A, 60 Hz
220 VAC, 1 A, 50 Hz (optional)
EnclosureNEMA 4X, fiberglass reinforced
Operating Temperature34° – 120° F (1° – 49° C)
Dimensions11.2” W x 9.2” H x 6.3” D
(285 mm W x 234 mm H x 161 mm D)
Weight10 lbs (4.5 kg)

*Repeatability/Accuracy specifications for most other SCM’s are only valid when conductivity is very stable. These instruments do not perform to their specification when conductivity changes by as little as 10%.