When it comes to boiler feedwater monitoring, precision and reliability are critical. Even small deviations in water chemistry can cause scaling, corrosion, or foaming, which reduce efficiency and cause costly downtime.
That’s why CWC now offers the Guardian IK-2000 Series by Pyxis Lab® — a turn-key, multi-parameter analyser built to simplify and automate boiler water quality control.
The Guardian platform provides real-time data, remote connectivity, and lab-grade accuracy, helping you protect assets, optimise chemical usage, and improve energy efficiency.
Why Boiler Feedwater Monitoring Matters
The quality of boiler feedwater directly impacts efficiency, reliability, and the lifespan of the system. As highlighted in CWC’s Boiler Feedwater Monitoring Guide, proper analysis is essential for both performance and safety.
Here’s why continuous monitoring is a must:
1. Prevent Scale Formation
Dissolved salts like calcium and magnesium can form hard scale deposits on boiler tubes. This acts as an insulator, reducing heat transfer efficiency and increasing energy consumption. By continuously analysing water quality, operators can adjust softening or dosing systems before scale develops.
2. Control Corrosion
Oxygen, carbon dioxide, and low pH are the major causes of corrosion in boilers. By tracking dissolved oxygen, pH, and sulfite levels, the Guardian system allows precise dosing of oxygen scavengers and alkalinity agents, protecting your equipment from internal corrosion.
3. Avoid Foaming and Carryover
Excess total dissolved solids (TDS) can cause foaming, leading to water carryover into the steam system. This can contaminate downstream equipment and reduce steam purity. Monitoring conductivity and TDS ensures effective boiler blowdown control and cleaner, safer steam.
4. Optimise Efficiency and Reduce Costs
Clean heat transfer surfaces improve fuel-to-steam conversion efficiency. With accurate chemical control, you minimise maintenance, reduce chemical costs, and prevent unplanned shutdowns.
Meet the Guardian IK-2000 Series
The Guardian Boiler Feedwater Analyzer is a plug-and-play modular panel that simplifies monitoring and control for any boiler system — from low to high pressure.
Each panel integrates up to four Pyxis Lab® smart sensors, controlled through a 7-inch UC-100AGS colour touch display with data logging and Modbus connectivity.
Guardian IK-2000 Series Boiler Feedwater Analyzer Panel
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Fully integrated one-panel system
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CloudLink™ 4G Gateway for remote monitoring
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Pre-plumbed with Swagelok™ stainless steel fittings
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Digital flow meter and rotameter for precise sample control
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Built-in sensor calibration shelf
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CE / RoHS / UKCA compliant
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Constructed in 304 & 316L stainless steel for durability
Available Configurations
Each model shares the same panel layout, allowing users to start small and add sensors as their needs evolve — no reconfiguration required.
| Model | Parameters Included | Expandable For |
| IK-2000 (Level 1) | Dissolved Oxygen, Temperature | + pH/ORP/Sulfite, Fluorescein, or Conductivity |
| IK-2010 (Level 2) | Dissolved Oxygen, pH, ORP, Sulfite, Temperature | + Fluorescein or Conductivity |
| IK-2020 (Level 3) | Dissolved Oxygen, pH, ORP, Sulfite, Fluorescein, Temperature | + Conductivity |
| IK-2030 (Level 4) | All Parameters (DO, pH, ORP, Sulfite, Fluorescein, Conductivity) | Fully Integrated |
🧠 The modular design makes Guardian a future-proof investment for any plant or water treatment provider.
Smart Sensor Technology
Each Guardian unit leverages Pyxis Lab® Smart Sensors, which automatically configure, calibrate, and log data upon connection:
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ST-774 Dissolved Oxygen Sensor – Measures down to 0.1 ppb using optical fluorescence quenching, ideal for high-pressure boilers.
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ST-765SS-SO3 Multi-Parameter Sensor – Combines sulfite, pH, ORP, and temperature in one stainless-steel sensor for real-time chemical monitoring.
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ST-525SS-T Fluorescein Sensor – Detects tracer chemical levels to verify dosing accuracy.
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ST-724 Conductivity Sensor – Provides ultra-low conductivity and TDS measurement for boiler blowdown optimisation.
Ease of Use Meets Industrial Strength
The Guardian’s UC-100AGS interface provides intuitive navigation for calibration, data export, and Modbus TCP/RTU integration.
During maintenance, the HOLD feature locks outputs to prevent false alarms, ensuring smooth operation.
With Pyxis CloudLink™, users can remotely monitor performance and diagnostics from any connected device.
Who Benefits from Guardian Technology
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Industrial facilities with steam or hot water systems
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Water treatment contractors and service providers
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Plant engineers and facility managers seeking reliable automation
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Energy and sustainability teams focused on reducing chemical waste and emissions
See the Guardian in Action
🎥 Watch the Product Video:
Also available on the CWC Promotional Videos Page →
Ready to Upgrade Your Boiler Monitoring?
CWC is proud to be Australia’s trusted distributor of Pyxis Lab® Guardian Systems, providingfull support from setup to maintenance.
🔗 Explore the Guardian Series: Boiler Controllers | CWC
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