Sizing an ultrasonic cleaner tank starts with the largest part and a realistic loaded basket, not with a nominal litre rating that leaves no clearance.

01

Measure the largest part and basket

The tank interior must hold the largest part or basket with clearance on every side and below the parts so liquid can move. Parts resting on the floor or packed against the walls shield surfaces from cavitation.

A practical rule is to size the basket around the largest part, then choose a tank that holds the basket with a few centimetres of clearance rather than working from the advertised litre number alone.

  • Largest part dimensions
  • Basket outside dimensions
  • Clearance on all sides
  • Maximum loaded weight
02

Estimate liquid capacity and fill

Industrial ultrasonic tank interior
The working fill is lower once the basket displaces liquid.

Capacity is the inner volume, but the working fill is lower because parts and basket displace liquid. A tank rated at a given nominal volume will not run full when a basket is loaded.

For a quick estimate, treat the loaded basket as occupying part of the volume and confirm the working fill with the basket in place.

03

Match power to the liquid volume

Power density is the ultrasonic power relative to the liquid volume. A larger tank needs proportionally more transducers and power, or cleaning becomes weak.

See the power-density guide for the watt-per-litre range suited to light versus heavy contamination.

  • Larger tanks need more power
  • Power density in W per litre
  • Heavy soil needs more energy
04

Plan for baskets and handling

Heavy loads may need a lifting platform, while dense baskets may need agitation. The handling arrangement should be confirmed at the same time as the tank size.

If parts are added in the future, a slightly larger tank is usually safer than a machine that is filled to the limit.

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