💧 Water Treatment Plant Instrumentation
Countronics pH indicators, pH controllers, ORP meters, conductivity controllers, and TDS instruments are used in water treatment plants, RO systems, and purified water systems across India — providing accurate, continuous water quality monitoring and automatic dosing control.
Quick Answer: Water treatment plants use pH controllers, ORP controllers, and conductivity/TDS controllers to automatically maintain water quality parameters within required limits, controlling dosing pumps for neutralisation, disinfection, and scale prevention.
Water Quality Parameters and Why They Matter
Water treatment effectiveness depends on maintaining several key parameters within specified limits simultaneously. pH affects the efficiency of coagulation, disinfection, and scale prevention. ORP indicates the disinfection power of the treated water. Conductivity and TDS measure total dissolved solids — critical for RO system performance monitoring, boiler feed water quality, and process water purity.
Countronics instruments provide continuous online monitoring and automatic control of all these parameters, with panel-mounted displays and relay outputs for direct dosing pump integration.
pH Monitoring & Control
Two independent relays for acid/alkali dosing. Isolated 4-20mA output. Auto temp compensation. For automatic pH control in treatment plants.
Display and transmit pH simultaneously. Isolated 4-20mA for SCADA/PLC. Large 0.8" red display. For monitoring without automatic control.
Display-only pH indicator. Auto temperature compensation. Large red LED display. For visual monitoring of water pH at treatment stages.
Conductivity & TDS Monitoring
Dual-limit conductivity control. Two relay outputs. 4-20mA output. Auto temperature compensation. For RO plant and cooling tower blowdown control.
TDS measurement and control in ppm. Dual relay outputs. 4-20mA output. For RO permeate quality control and drinking water monitoring.
Display-only. Five conductivity ranges. TDS in ppm. Auto temp compensation. For RO permeate monitoring and water quality display.
pH, ORP, conductivity, TDS, and temperature in one instrument. For water treatment laboratory and QC testing.
Key Applications
- Water treatment plants (WTP) — pH control for coagulation and disinfection
- RO plant monitoring — conductivity and TDS of permeate and concentrate
- Swimming pools — pH and ORP control for safe disinfection
- Boiler feed water — pH and conductivity monitoring
- Cooling towers — conductivity blowdown control with 160-COND
- Drinking water treatment — pH and TDS compliance monitoring
- Process water systems — multi-parameter quality monitoring
Frequently Asked Questions
Which pH controller is used in water treatment?
The 112pH dual-limit pH controller is widely used in water treatment. It has two relay outputs for acid and alkali dosing, isolated 4-20mA for SCADA, and auto temperature compensation — enabling fully automatic pH maintenance.
What conductivity instrument is used for RO plant monitoring?
The 5500 conductivity indicator for continuous display monitoring. For automatic blowdown or dosing control, the 160-COND dual-limit conductivity controller with relay outputs is used.
What is ORP in water treatment?
ORP measures the disinfection effectiveness of chlorine, ozone, or other oxidising agents. Monitoring ORP alongside pH gives a complete picture of water treatment effectiveness. Countronics supplies online ORP controllers for automatic disinfection control.
Which instrument measures pH, conductivity and TDS together?
The 5501 benchtop multi-parameter meter measures pH, ORP, conductivity, TDS, and temperature from a single instrument — ideal for water treatment laboratory or QC applications.
Need instruments for your water treatment plant?
Share your parameters and we will recommend the right instruments with datasheets and pricing within 24 hours.
