Dial or Digital?

Having read the previous section on deciding what size ultrasonic cleaner to purchase, the next step is to decide what kind of control you want over the machine. Most models have two variations on each size: manual (dial), digital and occasionally, touch screen. 

1) Manual adjustment cleaner. The analogue adjustment ultrasonic carburettor cleaner has a simple knob / dial to set the cleaning time (0-20 minutes) and another knob for the temperature adjustment (20 - 80 degrees C). There is no LED display.

3) Digital with degassing cleaners. These models have a push button to set the cleaning time (0-99 minutes) and temperature (0 - 80 degrees C) with an LED display. The cleaning can be stopped mid-cycle and the temperature shows both the "target" temperature and actual water in the tank. In a workplace environment and working with hot water, there might be a health and safety implication that requires the tank temperature to be visible to prevent scalding to an employee. These ultrasonic cleaners have the technical function of a degassing mode which, after a change a cleaning solution, quickly removes air from the liquid that in turn makes the cleaning process more effective. This is especially useful when cleaning a carburettor.