CO2-pH Control
Effortlessly Control and Monitor pH Levels with CHEMTROL® Programmable Controller,
CO2 Gas Feeder and Automatic Switchover
Maintaining precise pH control is essential for optimal water quality in industrial and commercial applications. With CHEMTROL®’s CO2 pH control solutions, achieving consistent and accurate pH adjustments has never been easier.
The PC110x Programmable Controller delivers advanced functionality to manage CO2 gas flow, ensuring reliable pH optimization for large-scale systems and demanding environments.
CHEMTROL® CO2 pH Control System
The CHEMTROL® CO2 pH Control System offers efficient and safe pH regulation for various applications. Its advanced features ensure precise control, ease of installation, and reliable operation for both small and large systems.
Key Features:
- Precise pH Regulation: Achieve consistent pH control with carbonic acid, a safer and non-corrosive alternative to strong acids.
- Automatic CO2 Feeder Cabinet: Ensures accurate CO2 gas dosing with a precision flowmeter and durable solenoid valve.
- Remote Monitoring and Alerts: Monitor and control pH levels online with instant alerts for deviations.
- Integration with CHEMTROL® Controllers: Fully compatible with CHEMTROL® PC controllers for advanced water chemistry management.
- Flexible Communication Options: Supports Modbus, BACnet, and 4-20mA protocols for SCADA or BMS integration.

What is required?
- CHEMTROL® PC110x Programmable Controller
- Corrosion-resistant pH Sensor: Suitable for process industries
- pH Plumbing Manifold: Designed for pH control applications
- Water Recirculation Pump
- In-line Filter/Strainer: Ensures clean water around the sensor
- Optional Remote Monitoring: Internet connection via:
-Local Ethernet network (Cat5/6 connection)
-Compatible 4G/5G router with SIM-card and annual subscription.
Why Choose CHEMTROL® for Your CO2 pH Control?
✅ Safe and Reliable: Utilising CO2 as a pH-lowering agent eliminates the need for corrosive acids, minimising safety risks and preventing equipment corrosion.
✅ Cost-Effective and Efficient: Engineered for durability, our system reduces maintenance demands, optimises operational efficiency, and delivers long-term savings.
✅ Scalable and Versatile: Designed for commercial and industrial applications, our system easily integrates into existing setups and adapts to the specific needs of your facility.

CO2 pH Control Cabinet
The CO2 feeder cabinet is designed for seamless integration with the CHEMTROL® controller via a pH output relay connection. It is built to efficiently control CO2 gas flow and includes:
- Precision Flowmeter: Direct-reading, adjustable flow from 10 to 100 SCFH
- ASCO Solenoid Valve: Brass body, rated for 750 psi, 1/4″, 24 or 240V, 500r 60Hz
- Inlet & Outlet Fittings: Compatible with 1/4″ tubing
- PVC Check Valve: 1/4″ CO2 Injector for smooth and efficient process control
This CO2 feeder system is an ideal solution for effective pH control in industrial applications, offering reliability and ease of integration with your existing system.

Controller with CO2 Feeder Set Installation
For a neat and streamlined installation, it is recommended to mount the CHEMTROL® controller and CO2 feeder side by side on a 10mm thick PVC backboard. Use slotted cable management ducting for a clean and organized setup.
- Assembly: Grey PVC backboard (730 x 530 mm).

CO2 Auto Switchover feeder Integration
Our CO2 Feeder Cabinet works seamlessly with the PC110x Controller to ensure smooth and efficient CO2 injection. The system offers:
-Adjustable CO2 Flow: Control the precise amount of CO2 gas injected into the system for optimal pH levels.
-Automatic Switchover: For continuous operation, the CO2 system can be configured with an automatic switchover to keep the system running smoothly, even when one CO2 cylinder runs out.
- Assembly: Grey PVC backboard (730 x 530 mm).

Communication options
Experience the convenience of our waterproof cabinet, which consolidates all your communication needs in one place
- Remote Monitoring & Control: Access your system via a cloud-based web server using Ethernet or WiFi.
- True Duplex Operation: Mirror the controller display on your PC or mobile device for real-time control and monitoring.
- Wireless Control: Utilize a 4G or 5G router for wireless operation.
- 4-20mA Signal: Monitor output displays with ease using the 4-20mA signal.
- BMS & SCADA Communication Protocols: Integrate seamlessly with your system using Modbus IP, Modbus RTU, BACnet IP, BACnet MSTP, and LonWorks protocols.
This flexible communication suite offers complete control, remote access, and seamless integration with your existing systems, enhancing operational efficiency.

Remote Operation for Seamless Control and Monitoring
With the remote operation function, you can easily control and monitor any number of facilities directly from your laptop, tablet, or mobile app.
Our range of programmable controllers offers flexible connectivity options, ensuring you have 24/7 access to your data. Whether using wired or wireless technologies, your controller can connect seamlessly to your network.
- Wired Connection: Simply connect the controller to your local network via an Ethernet cable, allowing direct access to the internet, just like your laptop.
- Wireless Control: For flexibility, connect via a compatible 4G/5G router (requires a SIM-card subscription) for wireless control and monitoring.