Zetasizer WT On-line zeta potential analyzer for water treatment processes The Zetasizer WT is a fully automated system that delivers lab quality on-line zeta potential measurements. This enables real-time monitoring of flocculation process performance and efficient charge neutralization. On-line charge measurements you can trust are finally here!
The Zetasizer WT combines Malvern Panalytical’s industry leading Electrophoretic Light Scattering technology with two decades of expertise with in-process measurements to produce a dedicated on-line zeta potential analyzer for water treatment plants.
No more guess work – accurate and reliable results in [mV] provide a clear range for dosing control.
Respond to changes in raw water before they cause filtration problems!
Reduce chemical use to optimum for forming a stable floc. Overdose no more!
Completely automated zeta potential analysis with results in minutes.
Results sent to SCADA via OPC, Modbus or 4-20mA
Easy measurement of grab samples on the same system.
HMI for local control and setup
On board computer for autonomous operation
Sample flow and temperature sensing
How it works
The Zetasizer WT connects to a sample stream coming from the plant after coagulants have been added and mixed into the water. The system uses a pump to flow a sample through the analyzer`s flow cell where zeta potential measurements are made. Sample is then pumped into waste or returned back into the process and replaced with a fresh sample in a continuous, automatic cycle.
Automation and analysis is controlled by an on-board industrial computer running Malvern Panalytical Link II software.
Measurement results are displayed on a local HMI screen as well as exported into plant SCADA via OPC, Modbus TCP/IP or wired 4-20mA connections.
Results are used by treatment plant operators or a plant control system to adjust coagulant dose required to keep zeta potential in a pre-determined range – typically between zero and a slight negative charge.
Zetasizer WT also allows easy measurement of grab samples from other areas in the process, effectively doubling as a laboratory system.
Sample flow rate: 100 - 350 LPH (fast loop)
Sample flow rate: 0.5 - 2 LPM (measurement)
Measurement type: Zeta potential
Measurement principle: Laser Doppler micro-electrophoresis
Result output frequency: 3 minutes typical, programmable
Operation: 24hr continuous
Range of zeta potential measurement: +/- 500 mV (+/- 90 mV on HMI interface)
Size range: 3.8 nm to 100µm
Enclosure rating: IP54, indoor use. Limited capability to NEMA 4X
Power: 90 - 132 VAC, 180 - 264 VAC, 50 - 60 Hz, 6 A
Dimensions (W, D, H): 855 x 686 x 1720mm
Weight: 160 Kg
Compressed air purge: 1.5LPM, 6-10 bar, ISO 8573-1:2010 [0.7.2] (optional)
Temperature range: 0°C to 40°C
Humidity: 5-95% non-condensing
Maximum sample pressure: 6 bar