The Affordable SCADA Alternative with Membrane Intelligence

Guardian HMI replaces traditional SCADA with an all-in-one industrial touchscreen — and adds membrane intelligence that SCADA cannot provide. Health scores, predictive cleaning schedules, and fouling detection built in. No programming required, no annual license fees.

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Guardian HMI - SCADA alternative for water treatment plants

Why water plants are moving away from SCADA

Traditional SCADA systems were designed for large-scale industrial plants. For water treatment, they bring unnecessary complexity and cost.

Expensive Licenses

SCADA software licenses cost thousands per year. Add PLC programming fees, server hardware, and IT maintenance. Total cost of ownership keeps growing.

Requires Programming

Traditional SCADA needs PLC ladder logic, HMI screen development, and database configuration. Changes require hiring an integrator every time.

Slow Deployment

A traditional SCADA project takes weeks or months: system design, PLC programming, HMI development, testing, and commissioning. Guardian HMI deploys in days.

Guardian HMI vs. Traditional SCADA

FeatureTraditional SCADAGuardian HMI
Hardware RequiredPLC + HMI + Server + NetworkAll-in-one touchscreen (10"-32")
Software License$2,000-$15,000/yearNo license fees
Programming RequiredLadder logic + HMI scriptingPre-built for water treatment
Deployment Time4-12 weeksDays
Remote MonitoringRequires VPN + additional softwareBuilt-in web portal + mobile app
Push Notifications Requires add-on Built-in
Mobile App Not included Included
Historical DataRequires database serverBuilt-in data logging
P&ID Diagrams Custom development Interactive, pre-built
Multi-site ManagementComplex VPN setupCloud portal, one dashboard
MaintenanceIT staff or integrator requiredAutomatic OTA updates
Membrane Analytics Not available Health scores, fouling detection & predictive cleaning

Everything SCADA does, plus membrane intelligence

Interactive P&ID Diagrams

Touch-enabled process diagrams with real-time sensor data overlay. Tap valves and pumps to control them directly from the screen.

Web Portal

Monitor all your water treatment systems from a single cloud dashboard. Access from any browser, no VPN or special software needed.

Mobile App

Get push notifications on your phone. View live readings, acknowledge alarms, and control equipment from anywhere in the world.

Data Logging & Trends

Automatic data recording with interactive trend graphs. Export reports for compliance, audits, and process optimization.

Alarm Management

Configurable alarm thresholds per sensor with escalation rules, alarm history, and instant push notifications to your team.

Automated Sequences

CIP cleaning, backwash, regeneration, and custom timed sequences. Sensor-triggered or scheduled — no PLC programming required.

Membrane Intelligence

Built-in membrane health scores, predictive cleaning schedules, and fouling detection. Know when to clean, when to replace, and catch problems before they escalate — analytics that traditional SCADA simply cannot provide.

Guardian HMI touchscreen showing water treatment P&ID diagram

Industrial touchscreen with built-in membrane intelligence

Guardian HMI is available in 10", 15", 21", and 32" industrial-grade touchscreens. IP65-rated, designed for harsh environments. Built-in WiFi for cloud connectivity. Supports 15+ sensor types including TDS, pH, ORP, flow, pressure, temperature, and turbidity.

Explore Full Platform

16 digital sensors, one platform

Guardian HMI supports 16 plug-and-play digital sensors — all RS485 Modbus RTU, IP68 waterproof, with remote calibration.

pH
VT-PH-485
ORP
VT-ORP-485
Conductivity
VT-EC-485
Dissolved O2
VT-DO-485
Chlorine
VT-CL-485
TSS
VT-SS-485
Turbidity
VT-TUR-485
NH3-N
VT-NH-485
COD/BOD
VT-COD-485
Ion Sensor
VT-ION-485
Chlorophyll
VT-CHL-485
Color
VT-CLR-485
Transparency
VT-WT-485
Algae
VT-ALG-485
View full sensor catalog

Common questions about replacing SCADA

What is the difference between Guardian HMI and traditional SCADA?

Traditional SCADA requires a PLC, separate HMI software, a SCADA server, licensed software, and programming expertise. Guardian HMI is an all-in-one industrial touchscreen with built-in controller, IoT connectivity, web portal, and mobile app — no programming, no license fees, no separate server. Plus, Guardian HMI includes membrane intelligence with health scores, predictive cleaning, and fouling detection that traditional SCADA simply cannot offer.

Can Guardian HMI replace my existing SCADA system?

Yes. Guardian HMI can replace traditional SCADA in water treatment applications including reverse osmosis, ultrafiltration, water softeners, media filters, and filling machines. It provides real-time monitoring, remote access, alarm management, and historical data logging.

How much does Guardian HMI cost compared to SCADA?

Guardian HMI costs a fraction of a traditional SCADA system. There are no annual software license fees, no PLC programming costs, and no separate server hardware required. Contact us for a custom quote based on your application.

Does Guardian HMI support remote monitoring?

Yes. Guardian HMI includes built-in WiFi and connects to the Vontech web portal and mobile app. Monitor your entire fleet of water treatment systems from anywhere in the world, receive push notifications, and control equipment remotely.

What water treatment applications does it support?

Guardian HMI is designed for reverse osmosis (RO), ultrafiltration (UF), water softeners, media filters (carbon, sand, multimedia), and bottle/jug filling machines. Each application comes with pre-built P&ID diagrams and control logic.

Replace your SCADA with Guardian HMI

Tell us about your current setup and we'll show you how Guardian HMI can replace your SCADA at a fraction of the cost. Free consultation, fast response.

Free SCADA replacement assessment
Response within 24 hours
Side-by-side cost comparison with your current SCADA

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