ADW Flow Sensor Solutions Enabling Precision Measurement in Liquid Cooling Systems

As AI computing infrastructure continues to evolve, liquid cooling technologies are becoming essential for maintaining thermal stability in high-density computing environments. ADW provides advanced flow sensing solutions designed specifically for modern AI server liquid cooling systems, supporting precise flow measurement, intelligent thermal management, and highly reliable system operation.

ADW’s cloud computing thermal management portfolio includes:

• Vortex Flow Meter

• Clamp-On Flow Meter

• Ultrasonic Flow Meter

These solutions address the growing demand for accurate coolant monitoring in both cold plate and immersion cooling architectures, supporting next-generation data centers and AI infrastructure.

Precision Liquid Cooling Measurement Through Intelligent Sensor Technology

With the widespread deployment of high-performance processors such as NVIDIA H100, single-chip power consumption exceeding 700 W and AI server rack power densities surpassing 30 kW have become increasingly common. Traditional air cooling technologies are reaching their thermal limits, accelerating the industry transition toward full liquid cooling systems.

However, the greatest challenge in liquid cooling systems lies in the invisibility of coolant dynamics. Within complex multi-branch cooling loops, coolant flow must be precisely controlled:

• Insufficient flow may cause rapid chip overheating and system failure

• Excessive flow increases unnecessary power consumption and energy waste

Conventional solutions rely on expensive instrument-grade flow meters for system monitoring. ADW replaces traditional instrumentation approaches with highly integrated intelligent sensor solutions, introducing a dedicated flow sensor series for AI server liquid cooling systems.

By implementing a “main loop + branch loop” monitoring architecture instead of conventional main-loop-only monitoring, ADW enables more precise flow and temperature regulation while significantly improving cost efficiency for modern data centers.

Vortex Flow Meter: The “Sentinel” of Main Cooling Loops

Within the primary cooling pipelines of AI server clusters, the ADW Vortex Flow Meter delivers highly stable and reliable coolant flow monitoring, even under challenging operating conditions involving air bubbles and impurities.

The sensor incorporates optimized algorithms specifically designed for gas-liquid mixed environments commonly found in liquid cooling systems. Even under complex two-phase flow conditions, the system maintains measurement accuracy up to ±3% F.S.

Key advantages include:

• Excellent resistance to bubble and impurity interference

• Compact modular design

• Low pressure loss

• Reduced pumping energy consumption

• Real-time flow monitoring capability

Acting as the “sentinel” of the liquid cooling system, the vortex flow meter continuously monitors primary coolant flow to ensure stable thermal performance and maintain optimal operating conditions for high-performance computing chips under strict PUE requirements.

Clamp-On Flow Meter: Non-Invasive Installation for Intelligent Predictive Maintenance

The ADW Clamp-On Flow Meter is designed for non-invasive installation on branch cooling pipelines without requiring pipe cutting or system interruption.

A standard 8-GPU AI server typically contains eight independent liquid cooling branches, each requiring highly accurate flow monitoring. The clamp-on solution can be flexibly deployed across any branch cooling line to provide real-time coolant flow data.

Its intelligent alarm functions enable early detection of:

• Uneven coolant distribution

• Flow abnormalities

• Potential blockage risks

This ensures balanced coolant delivery to every heat-generating node while supporting predictive maintenance and improving operational reliability across complex liquid cooling infrastructures.

Ultrasonic Flow Meter: Long-Life Monitoring with Leak Detection Capability

The ADW Ultrasonic Flow Meter utilizes advanced ultrasonic sensing technology to monitor coolant flow velocity and cumulative flow in real time.

Because the system contains no moving mechanical components, it eliminates wear-related failure risks and ensures exceptionally long operational lifespan and reliability.

A key feature is its micro-flow leakage detection capability, which enables early identification of coolant leakage risks before system failures occur.

Additional advantages include:

• No moving parts

• Maintenance-friendly operation

• High long-term reliability

• Expandable modular architecture

• Coolant quality monitoring capability

Through multi-module expansion, the system can also evaluate coolant condition changes, helping ensure continuous and efficient thermal management for high-density AI computing infrastructure.

With its intelligent sensing technologies and advanced thermal management expertise, ADW continues to support the next generation of energy-efficient and highly reliable liquid cooling systems for AI data centers and high-performance computing environments.