Pressure Transmitters Enable Smarter and More Reliable Liquid Cooling Systems

Pressure sensors in liquid cooling systems are used to acquire static and dynamic pressure data in the loop in real time. Static pressure reflects the potential energy level of the coolant during stable flow; dynamic pressure reflects instantaneous fluctuations caused by pump start-up/shutdown, valve operation, or sudden load changes.

The sensors convert physical pressure into a standard electrical signal output, such as a 4-20 mA current signal or a digital IIC protocol, through high-frequency sampling (tens to hundreds of times per second), which is then transmitted to the main control unit. The control system adjusts the circulating pump speed and proportional valve opening based on this data to achieve closed-loop flow control.

For example, under high heat load conditions, if a drop in downstream pressure is detected, the system can automatically increase the pump speed to maintain the set flow rate, ensuring that the heat dissipation capacity matches the heat generated. This mechanism effectively prevents flow rate reduction and localized overheating caused by insufficient pressure, while avoiding stress accumulation or cavitation in pipelines due to excessive pressure, thus extending equipment lifespan. The liquid-cooled pressure sensor developed by XYT SENSOR compact pressure transmitter QYB100 has the following characteristics:
Range: -0.1-0-100Mpa
Output signal: Two wires 4-20mA
Three wires 0-5V/0.5-4.5V/0-10V
Power supply: 24V DC
Overload: 150%F.S.
Accuracy: 0.25%F.S 0.5%F.S
Thread: G1/2 G1/4 NPT1/2 NPT1/4 (Customized) It can accurately detect the total pressure of the liquid cooling system and provide data for monitoring abnormal pressure in the loop. This ensures the overall stability of the system and provides the strongest support for data center operations. This intelligent management method not only improves system efficiency but also ensures operational safety.