Cooling water/oil flow monitoring and protection

2026-04-09

1. Turbine flowmeter: The preferred choice for high-precision clean fluid measurement

The core of the turbine flowmeter is a precise rotor. When the fluid flows through, it drives the rotor to rotate, and the rotational speed is proportional to the flow rate. Its main advantages are high precision and excellent repeatability, making it suitable for applications requiring precise measurement.

Cooling water system application

It is mainly used in mechanical processing, power or HVAC (heating, ventilation, and air conditioning) systems to monitor the flow rate of equipment cooling water. It can provide real-time data feedback to ensure that key equipment (such as power generators, CNC machine spindle) are adequately cooled and prevent equipment overheating and damage due to insufficient flow. In data center liquid cooling or laboratory scenarios, it is also used for precise measurement of cooling fluid consumption.

Cooling oil system application

The turbine flowmeter is a mature solution for monitoring cooling oil in power plants and large machinery lubricants and cooling oil. Due to the high viscosity of the oil, ordinary turbine flowmeters may get stuck, but a dedicated turbine flowmeter with high-hardness alloy steel blades and special bearings (such as tungsten carbide / ruby) design can reliably measure high-viscosity oil and has a wide range ratio.

Important reminder when using:

The turbine flowmeter has a high requirement for the cleanliness of the medium. If the fluid contains solid particles, it is very likely to jam the rotor. Therefore, a filter must be installed upstream of the instrument. At the same time, it is not suitable for measuring high-viscosity or media with bubbles.

2. Vortex flowmeter: A durable and adaptable choice for complex conditions

The vortex flowmeter is based on the "Karman vortex" principle. It sets an incident body in the fluid to detect the frequency of downstream vortices to calculate the flow rate. Its greatest advantage is the absence of moving parts, resulting in low pressure loss, good wear resistance, and long-term stability, making it particularly suitable for harsh conditions.

Cooling water system application

One of the advantages of the vortex flowmeter is that it is not affected by the conductivity of the fluid, making it suitable for measuring ultra-pure water or deionized water (electromagnetic flowmeters cannot measure such media). At the same time, due to its sturdy structure, it can tolerate a small amount of bubbles or impurities in the fluid. In AI server liquid cooling, photovoltaic semiconductor cooling, and other high-reliability closed-loop systems, it is often used as a core monitoring component.

Cooling oil system application

When the cooling oil contains impurities, iron filings, or is a high-viscosity medium, the vortex flowmeter is a better choice than the turbine. Its incident body design is less likely to be clogged or worn by impurities. At the same time, it can also adapt well to high-temperature conditions and is often used in thermal oil circulation systems in chemical and metallurgical industries.

Important reminder when using:

The vortex flowmeter is sensitive to pipeline vibration. When installing, it should be as far away from pumps and compressors as possible. At the same time, to ensure the stable formation of vortices, sufficient straight pipe sections (usually 10 times the pipe diameter in front and 5 times in the rear) are required before and after the instrument. When measuring high-viscosity media, it is necessary to confirm whether the instrument selection supports it.