Controllers for Reverse Osmosis
6 models in this family. Representative models: OS3015, OS3020, OS3030.

International brand dossier
EWS International is a water-treatment controller specialist whose public site positions the company in microprocessor-based controllers for industrial water treatment.In this catalog it is relevant where softening, filtration, dosing, conductivity, or plant control logic requires dedicated controllers rather than only standalone sensors.
EWS's position in instrumentation and sensors is defined by product families such as Controllers for Reverse Osmosis, Controllers for Ultrafiltration, Controllers for Filters and softeners and Controller for Demineralisation.
The portfolio is best understood inside online water-quality measurement, process control, chemical dosing feedback, plant monitoring, and safety interlocks, where engineers compare the technology route, family boundaries, and duty fit before narrowing to individual models.Representative series on this page include OS3015, OS3020 and OS3030.Engineers should compare measured parameter, range and accuracy, wetted materials, calibration workflow, and control-system communication.
26
Indexed models
6
Product families
0
Subgroups
Product range and selection
This section answers two questions: which main product families EWS offers, and which parameters to compare before choosing a specific model.
The main families shown on this page are Controllers for Reverse Osmosis, Controllers for Ultrafiltration, Controllers for Filters and softeners, and Controller for Demineralisation. Start with the treatment objective, equipment format, and operating duty, then use the model index below to compare exact specifications.
After choosing a product family, compare measurement parameter, sample condition, signal integration, and maintenance frequency. Replacement projects should also verify installation or loading conditions, interfaces, and compatibility with the existing system; new projects should consider operating practice, maintenance, and spare-parts or consumables availability.
6 product familys on this page.
Controllers for Reverse Osmosis
6 models in this family. Representative models: OS3015, OS3020, OS3030.
Controllers for Ultrafiltration
4 models in this family. Representative models: UF2050, UF2051, UF3020.
Controllers for Filters and softeners
8 models in this family. Representative models: ES2030 CV, ES2030 SV, ES2050.
Controller for Demineralisation
1 model in this family. Representative models: ES2070 CA.
Controllers for Cooling Towers
6 models in this family. Representative models: AS3020, AS3035, AS3037.
Controller for Conductivity measurement
1 model in this family. Representative models: CC3020.
Quick Model Index
The table is intentionally compact: use it to scan model names, product families, and source links quickly. Open the profile cards below when you want richer context.
6 indexed models
| Model | Application | Sources |
|---|---|---|
| OS3015 | The EWS OS3015 is a universal controller for automatic monitoring and control of reverse osmosis plants. It features a monochrome LCD display. | |
| OS3020 | The OS3020 is a controller designed for the automatic monitoring and control of reverse osmosis plants. This unit features a monochrome LCD display. | |
| OS3030 | This OS3030 is a universal automatic monitoring and control unit for reverse osmosis plants, featuring a monochrome LCD display and support for multiple languages. | |
| OS3050 | The OS3050 is an automatic controller designed for reverse osmosis plants, offering five operational stages and a monochrome LCD display with multi-language support. | |
| RGS3000 | The RGS3000 is a universal controller designed for the automatic monitoring and control of reverse osmosis plants, supporting multiple operational stages. | |
| RGS8000 | The RGS8000 is a universal monitoring and control unit for reverse osmosis plants featuring a 7-inch color touchscreen display and multiple programmable stages. |
4 indexed models
| Model | Application | Sources |
|---|---|---|
| UF2050 | The UF2050 is a universal unit designed for the automatic monitoring and control of ultrafiltration plants. | |
| UF2051 | The UF2051 is a panel-mounted controller for automatic monitoring and control of ultrafiltration plants, supporting eleven operational stages. | |
| UF3020 | The EWS UF3020 is an instrumentation unit designed for the automatic monitoring and control of ultrafiltration plants. It features a wall-mountable. | |
| UFS8000 | The UFS8000 is a universal controller for automatic monitoring and control of ultrafiltration plants, supporting nine operational stages. |
8 indexed models
| Model | Application | Sources |
|---|---|---|
| ES2030 CV | The ES2030 CV is an automatic controller designed for single and double column softener plants, adaptable to various control and pilot valves. | |
| ES2030 SV | The ES2030 SV is an instrumentation controller designed for automatic monitoring and control of softener or filtering plants in single and double column installations. | |
| ES2050 | The ES2050 is a universal controller designed for automatic monitoring and control of single or double column softener plants in alternating or parallel circuits. | |
| ES2051 | The ES2051 is an instrumentation and sensor product from EWS. | |
| ES2070 SV | The EWS ES2070 SV is a sensor for process control. | |
| ES2070 TV | The ES2070 TV is a universal controller for automatic monitoring and control of softener plants, suitable for single, double. | |
| FCS3000 | The EWS FCS3000 is a programmable controller for automatic monitoring and control of softeners utilizing Clack valves. This unit features an IP65 rated enclosure. | |
| SFS8000 | The EWS SFS8000 is a universal controller designed for automatic monitoring and control of softener and filtering plants, suitable for duplex and triplex configurations. |
1 indexed model
6 indexed models
| Model | Application | Sources |
|---|---|---|
| AS3020 | The AS3020 is a universal controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display, three relay outputs. | |
| AS3035 | The EWS AS3035 is a controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display, multiple language support. | |
| AS3037 | The AS3037 is a universal controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display. | |
| AS3050 | The AS3050 is a wall-mountable controller for automatic monitoring and control of cooling tower plants. It features a monochrome LCD, multiple programmable stages. | |
| AS3051 | The EWS AS3051 is a universal controller for automatic monitoring and control of cooling tower plants. This panel-mounting unit features a monochrome LCD display. | |
| CTS8000 | The EWS CTS8000 is an automatic controller designed for cooling tower plants, featuring a 7" color touchscreen and multiple operational modes. |
Brand Technical Documents
These document pages collect product manuals, model notes, accessory documents, and application files for this brand in the current category. Open the PDF when original tables, diagrams, or full manuals are needed.
The AS3020 is a universal controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display, three relay outputs.
The EWS AS3035 is a controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display, multiple language support.
The AS3037 is a universal controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display.
The AS3050 is a wall-mountable controller for automatic monitoring and control of cooling tower plants. It features a monochrome LCD, multiple programmable stages.
The EWS AS3051 is a universal controller for automatic monitoring and control of cooling tower plants. This panel-mounting unit features a monochrome LCD display.
The EWS CC3020 is a controller for conductivity measurement, featuring automatic monitoring and regeneration initiation via an external device.
The EWS CTS8000 is an automatic controller designed for cooling tower plants, featuring a 7" color touchscreen and multiple operational modes.
The ES2030 CV is an automatic controller designed for single and double column softener plants, adaptable to various control and pilot valves.
The ES2030 SV is an instrumentation controller designed for automatic monitoring and control of softener or filtering plants in single and double column installations.
The ES2050 is a universal controller designed for automatic monitoring and control of single or double column softener plants in alternating or parallel circuits.
The ES2051 is an instrumentation and sensor product from EWS.
The ES2070 CA is a universal controller for monitoring and controlling demineralisation plants, featuring a monochrome LCD and multiple language support.
The EWS ES2070 SV is a sensor for process control.
The ES2070 TV is a universal controller for automatic monitoring and control of softener plants, suitable for single, double.
The EWS FCS3000 is a programmable controller for automatic monitoring and control of softeners utilizing Clack valves. This unit features an IP65 rated enclosure.
The EWS OS3015 is a universal controller for automatic monitoring and control of reverse osmosis plants. It features a monochrome LCD display.
The OS3020 is a controller designed for the automatic monitoring and control of reverse osmosis plants. This unit features a monochrome LCD display.
This OS3030 is a universal automatic monitoring and control unit for reverse osmosis plants, featuring a monochrome LCD display and support for multiple languages.
The OS3050 is an automatic controller designed for reverse osmosis plants, offering five operational stages and a monochrome LCD display with multi-language support.
The RGS3000 is a universal controller designed for the automatic monitoring and control of reverse osmosis plants, supporting multiple operational stages.
The RGS8000 is a universal monitoring and control unit for reverse osmosis plants featuring a 7-inch color touchscreen display and multiple programmable stages.
The EWS SFS8000 is a universal controller designed for automatic monitoring and control of softener and filtering plants, suitable for duplex and triplex configurations.
The UF2050 is a universal unit designed for the automatic monitoring and control of ultrafiltration plants.
The UF2051 is a panel-mounted controller for automatic monitoring and control of ultrafiltration plants, supporting eleven operational stages.
The EWS UF3020 is an instrumentation unit designed for the automatic monitoring and control of ultrafiltration plants. It features a wall-mountable.
The UFS8000 is a universal controller for automatic monitoring and control of ultrafiltration plants, supporting nine operational stages.
AI-ready Product Profiles
These cards are designed as reusable product profiles: the same format can later appear in AI search results, shortlist views, and assisted product matching.
6 profile cards
Product profile
The EWS OS3015 is a universal controller for automatic monitoring and control of reverse osmosis plants. It features a monochrome LCD display.
Product profile
The OS3020 is a controller designed for the automatic monitoring and control of reverse osmosis plants. This unit features a monochrome LCD display.
Product profile
This OS3030 is a universal automatic monitoring and control unit for reverse osmosis plants, featuring a monochrome LCD display and support for multiple languages.
Product profile
The OS3050 is an automatic controller designed for reverse osmosis plants, offering five operational stages and a monochrome LCD display with multi-language support.
Product profile
The RGS3000 is a universal controller designed for the automatic monitoring and control of reverse osmosis plants, supporting multiple operational stages.
Product profile
The RGS8000 is a universal monitoring and control unit for reverse osmosis plants featuring a 7-inch color touchscreen display and multiple programmable stages.
4 profile cards
Product profile
The UF2050 is a universal unit designed for the automatic monitoring and control of ultrafiltration plants.
Product profile
The UF2051 is a panel-mounted controller for automatic monitoring and control of ultrafiltration plants, supporting eleven operational stages.
Product profile
The EWS UF3020 is an instrumentation unit designed for the automatic monitoring and control of ultrafiltration plants. It features a wall-mountable.
Product profile
The UFS8000 is a universal controller for automatic monitoring and control of ultrafiltration plants, supporting nine operational stages.
8 profile cards
Product profile
The ES2030 CV is an automatic controller designed for single and double column softener plants, adaptable to various control and pilot valves.
Product profile
The ES2030 SV is an instrumentation controller designed for automatic monitoring and control of softener or filtering plants in single and double column installations.
Product profile
The ES2050 is a universal controller designed for automatic monitoring and control of single or double column softener plants in alternating or parallel circuits.
Product profile
The ES2051 is an instrumentation and sensor product from EWS.
Product profile
The EWS ES2070 SV is a sensor for process control.
Product profile
The ES2070 TV is a universal controller for automatic monitoring and control of softener plants, suitable for single, double.
Product profile
The EWS FCS3000 is a programmable controller for automatic monitoring and control of softeners utilizing Clack valves. This unit features an IP65 rated enclosure.
Product profile
The EWS SFS8000 is a universal controller designed for automatic monitoring and control of softener and filtering plants, suitable for duplex and triplex configurations.
1 profile card
Product profile
The ES2070 CA is a universal controller for monitoring and controlling demineralisation plants, featuring a monochrome LCD and multiple language support.
6 profile cards
Product profile
The AS3020 is a universal controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display, three relay outputs.
Product profile
The EWS AS3035 is a controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display, multiple language support.
Product profile
The AS3037 is a universal controller designed for automatic monitoring and control of cooling tower plants. It features a monochrome LCD display.
Product profile
The AS3050 is a wall-mountable controller for automatic monitoring and control of cooling tower plants. It features a monochrome LCD, multiple programmable stages.
Product profile
The EWS AS3051 is a universal controller for automatic monitoring and control of cooling tower plants. This panel-mounting unit features a monochrome LCD display.
Product profile
The EWS CTS8000 is an automatic controller designed for cooling tower plants, featuring a 7" color touchscreen and multiple operational modes.
1 profile card
Product profile
The EWS CC3020 is a controller for conductivity measurement, featuring automatic monitoring and regeneration initiation via an external device.