Leading Coolant Water Quality Monitoring Solution Provider Manufacturer since 2016-Rika Sensor

Professional Coolant Water Quality Monitoring Solution Provider Manufacturer

Why Is Water Quality Monitoring Critical for Liquid Cooling Systems?

While liquid cooling delivers unmatched thermal efficiency and density benefits, closed-loop coolant systems are inherently vulnerable to water quality degradation. Unlike open cooling tower systems, liquid cooling loops for IT equipment have extremely tight tolerance for water chemistry deviations, with even minor anomalies leading to costly, irreversible damage. There are two critical water loops to consider in liquid-cooled facilities: the facility water system (FWS) that supports site-wide cooling, and the technology cooling system (TCS) dedicated exclusively to IT equipment cooling — both require rigorous water quality control, with the TCS demanding the strictest parameter management.

❖ Corrosion of Critical Components

❖Occurrence Mechanism And Crisis: Abnormal pH levels, high dissolved oxygen (DO), or high conductivity can accelerate the electrochemical corrosion of cold plates, metal pipes, heat exchangers, and water collection pipes. This results in corrosion flakes and coolant leaks.
❖Data and Impact: This can lead to permanent damage to expensive GPU/CPU chips and the risk of hardware short circuits.

❖ Flow Path Blockage and Fouling

❖Occurrence Mechanism And Crisis: Suspended solids (increased turbidity), corrosive debris, and microbial growth can easily clog the microchannels inside the cold plate. The ASHRAE standard requires filtration of particles larger than 10 micrometers.
❖Data and Impact: The cooling flow is drastically reduced, triggering GPU throttling protection and even causing computing nodes to crash.

❖ Degraded Heat Transfer Efficiency

❖Occurrence Mechanism And Crisis: The formation of micron-sized scale or biofilm insulation layers on the heat exchange surface greatly reduces the thermal conductivity, forcing the cooling system to operate at higher energy consumption.
❖Data and Impact: Scale of only 1.5 mil (approximately 38 μm) can cause a 12.5% decrease in heat exchange efficiency, thus increasing PUE.

❖ Unplanned Downtime and Escalated Operational Costs

❖Occurrence Mechanism And Crisis: Deteriorating water quality leading to emergency flushing, component replacement, or unplanned shutdowns constitutes a serious breach of the Service Advisory Agreement (SLA).
❖Data and Impact: A 24/7 AI large model training cluster downtime can result in losses of tens of thousands of dollars per hour.

Liquid Cooling Water Quality Monitoring Solution

Components of an Liquid Cooling Water Quality Monitoring Systems

Components of RIKA’s Liquid Cooling Water Quality Monitoring System

Components of RIKA’s Liquid Cooling Water Quality Monitoring System RIKASENSOR’s end-to-end solution is built on four fully integrated liquid cooling-dedicated sensors—the pH Sensor, Conductivity Sensor, ORP Sensor, and Turbidity Sensor—delivering reliable data acquisition, seamless system compatibility, and intelligent management for liquid cooling facilities of all scales, from edge data centers to hyperscale

AI campuses.

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❖ pH Sensor:

Real-time pH Monitoring

❖Accuracy and Resolution: ±0.1 pH accuracy, 0.01 pH high resolution.

❖Technical Features: Low-resistivity glass membrane, maintaining fast response and extremely low drift in low-ion deionized water and PG25/EG25.

❖Interference Resistance: Built-in signal isolation chip, effectively shielding against strong electromagnetic interference (EMI) in data centers.

❖Threaded Mounting: Standard G3/4/M16 threads, suitable for seamless installation of CDUs and pipes.

❖ Conductivity Sensor:

Ion Concentration and Leakage Risk Warning

❖Measurement Range: 0-2000 μS/cm (customizable up to 10000 μS/cm), ±1% FS Accuracy.

❖Material and Construction: 316L industrial-grade stainless steel housing, IP68 highest protection rating.

❖Anti-Polarization Technology: Advanced anti-polarization and signal isolation design for accurate measurement of water ion enrichment levels.

❖Signal Output: Simultaneously supports RS485 (Modbus-RTU) and 4-20mA analog output.

❖ ORP Sensor

Suspended solids and pipe cleanliness monitoring

❖Optical principle: Utilizes optical correlation method with a sapphire measurement window.

❖Pipe compatibility: Immune to light reflection interference from the inner wall of stainless steel pipes, ultra-fast 1s response.

❖Measurement range: 0-10 NTU / 0-100 NTU, resolution 0.1 NTU.

❖Maintenance-free: No mechanical wear, no need for frequent calibration throughout its lifespan.

❖ Turbidity Sensor

Oxidation-Reduction Potential/Corrosion Proneness Prediction

❖Measurement Range: -1500 mV to +1500 mV, ±1 mV high accuracy.

❖Application Value: Real-time assessment of coolant oxidation and corrosion tendency and the activity status of bactericides/corrosion inhibitors.

❖Compatibility: Widely applicable to plate-type and immersion liquid cooling systems.

Related Products

Hunan Rika Electronic Tech Co.,Ltd is a privately held sensor manufacturer and solution provider of environmental & weather monitoring for 15+ years.

RK500-12 (Liquid cooling) pH Sensor-M16 connector

RK500-13 (Liquid cooling) EC Sensor-M16 connector

RK500-07 (Liquid cooling) Turbidity Sensor-M16 connector

RK500-06LC (Liquid cooling) ORP Sensor-M16 connector

RK500-12 (Liquid cooling) pH Sensor

RK500-13 (Liquid cooling) EC Sensor

RK500-07 (Liquid cooling) Turbidity Sensor

RK500-06LC (Liquid cooling) ORP Sensor

RIKA Sensor's Advantages for Liquid Cooling Monitoring

With over a decade of R&D and manufacturing experience in industrial water quality sensing technology, RIKA SENSOR delivers a reliable, easy-to-deploy, low-maintenance monitoring solution tailored to the strict requirements of modern liquid cooling systems. Our core competitive advantages include:

❖ Precision & Long-Term Stability for Closed-Loop Environments

All sensors are engineered for high precision and minimal drift in closed-loop liquid cooling conditions. The pH sensor features internal signal isolation for strong anti-interference performance in data center EMI environments.

❖ Flexible Installation & Seamless System Integration

RIKA’s sensors offer diverse installation options, including immersion mounting, standardized thread mounting (G3/4, and in-line pipeline installation, adapting to any monitoring point in the liquid cooling system (CDU inlet/outlet, main pipelines, branch lines, cooling tanks). With universal RS485 (Modbus RTU) and 4-20mA dual output, the sensors can be integrated into existing control systems rapidly, with no complex secondary development required.

❖ Robust Design for Extended Service Life

Our sensors use high-quality corrosion-resistant stainless steel, IP68 fully sealed housing, and wear-resistant optical components like sapphire measurement windows.
They deliver long-term stable immersion in coolant, with excellent corrosion and fouling resistance, outstanding sensor stability and no need for frequent maintenance, reducing replacement frequency and total lifecycle costs.

❖ Full-Cycle Technical Support & Customization

RIKA SENSOR provides global pre-sales consultation, installation guidance, and after-sales technical support. We also offer fully customized solutions, including sensor parameter tuning, multi-parameter integrated design, and tailored system integration support, to meet the unique requirements of different liquid cooling projects.

Application Scenarios

RIKA SENSOR’s liquid cooling water quality monitoring solution is adaptable to diverse liquid cooling deployments across industries, including: AI computing data centers, HPC/National Supercomputing Centers, liquid-cooled servers and CDU racks, edge data centers, industrial liquid cooling and new energy battery testing, EV supercharging stations and high-power industrial equipment, quantum computing facilities.

High-Performance Computing (HPC) & Supercomputer Facilities

Liquid-Cooled Servers

AI Data Centers

Edge Data Centers

Industrial Liquid Cooling Systems

Quantum Computing Facilities

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