KEVOS® MAKEOS · Maintenance
Coolant Top-up Balance
How much make-up fluid reaches the target within sump capacity?
Calculate the addition needed to correct an existing coolant concentration using a specified make-up mixture.
Open the calculatorRuns in your browser. No account needed.
How this tool works
Inputs, units and where to find them
| Input | Unit | Typical source |
|---|---|---|
| Existing working volume | L | Measured volume before correction, excluding unusable tank space. |
| Existing concentration | % | Representative measured concentration after the refractometer correction. |
| Make-up concentration | % | Actual concentration of compatible prepared make-up fluid. |
| Target concentration | % | Required final concentration within product instructions. |
| Maximum working volume | L | Maximum permitted working level with operating headroom, not brim capacity. |
Method and formulas
- Added volume = existing volume × (target − current concentration)/(make-up − target concentration).
- A target already equal to current needs no addition. Make-up at the target cannot bring a different initial concentration exactly to target in finite volume.
- Example: 100 L at 3%, corrected to 5% with 20% make-up, needs 13.333333 L and ends at 113.333333 L.
Limitations
- Compatible fluids, volume fractions, additive volumes and complete mixing are assumed. No removal or evaporation occurs during addition.
- The make-up concentration must be beyond the target in the required direction. Unattainable targets are rejected.
- Capacity exceedance is reported without clipping the quantity. Drain-and-replace planning is excluded.
- Default values are worked examples, not recommended settings or material properties.
Typical uses
- sump top-up
- coolant correction
- tank capacity
Who it is for
- Maintenance teams
- Machinists
What you get
- Required addition
- Final working volume
- Capacity margin
Interpreting the result
- Confirm working level before adding; if capacity fails, develop a separate supplier-approved correction plan.
- Circulate and recheck condition and concentration.
References
- Machinery’s Handbook, 29th edition (Industrial Press, 2012), printed pp. 1182–1187. Topic reference; implementation and examples are original, and no source tables are reproduced.
- Blaser Swisslube: Measuring coolant concentration — https://blaser.com/measuring-the-coolant-concentration/
WORKOS tools are screening and decision-support utilities. Verify important financial, engineering, safety, legal or operational decisions using appropriate professional standards and your organisation’s approved data.
