Data centers are designed around reliability. Cooling systems must continue operating as servers, networking equipment, and computing workloads generate heat around the clock. This makes modifications to existing cooling infrastructure more challenging than they may appear. Adding a traditional inline flowmeter to an existing cooling-water line may require the system to be shut down, drained, cut, and modified. For facilities where cooling interruption is undesirable, clamp-on ultrasonic flow measurement can provide a practical alternative. Smart Measurement’s ALSONIC-FX2 is a fixed clamp-on ultrasonic flowmeter designed for permanent non-intrusive measurement in appropriate liquid applications. The application note specifically identifies existing data-center chilled-water