Built-in sensing
Flow, temperature and pressure at the rack.
See flow, temperature and pressure where coolant enters and leaves the rack. Keep the measurement point and the rack configuration with every comparison.
- Supply
- Coolant to each server tray.
- Return
- Coolant back from the trays.
- F · P · T
- Flow, pressure and temperature.
Explore the measurements
Start with the signal.
How much coolant passes the rack?
Flow gives the rack a hydraulic reference. Compare it with the connected tray configuration and the operating condition. A rack total cannot prove the flow through every branch.
- Flow
- Amount passing through the manifold.
- Temperature
- Coolant condition at the sensor.
- Pressure
- Hydraulic condition at a defined point.
Keep the context with the reading.
A useful comparison includes the sensor location, the time, the coolant and the rack configuration. A higher temperature during a workload increase has a different context from the same change at a steady load.
Supply and return temperatures answer different questions. One pressure reading is not a differential pressure measurement. Record which points are being compared before drawing a conclusion.
Build a reference you can return to.
- Record the connected trays and their cooling requirements.
- Keep valve commands and relevant cooling-unit settings with the readings.
- Compare matched operating conditions before calling a change abnormal.
- Retain the sensor units, locations and measurement timestamps.
Glycol compensation
Start with a known fluid profile.
The design uses a confirmed fluid type and glycol concentration, including its mass or volume basis. Temperature-dependent density and heat capacity let measured flow and paired supply and return temperatures support a fluid-aware thermal estimate.
- Commissioned inputs
- Fluid product or chemistry, concentration and basis, and suitable fluid-property data.
- Measured inputs
- Flow and paired supply and return temperatures, with sensor locations and units recorded.
- Calibration
- Any flow-sensor compensation depends on its measurement principle, selected fluid and validated calibration.
Thermal power is approximately density × volumetric flow × heat capacity × return-to-supply temperature difference. A larger temperature span may require an enthalpy calculation. This is an engineering estimate, not a certified energy-meter claim.
Automatic glycol concentration measurement requires its own sensor and validation. Compensation does not dose glycol, remove hydraulic resistance or create available pump pressure.
Common questions
Can total rack flow confirm that every tray is cooled?
No. Different branches can have different hydraulic resistance. Check branch and tray requirements alongside the manifold readings.
Can pressure alone tell me the flow?
A single pressure value does not establish flow. The relationship depends on the flow path and its resistance. Read the measured flow and the relevant pressure points together.
Where are the sensors placed?
Sensor types, locations, quantity and measurement ranges are defined in the engineering specification. The drawings on this page explain the measurement roles.
Product details and rack requirements.
Read the product brief and use the specification guide to define the requirements for your rack.