• Ion bar controller
• Contains recessed potentiometer adjustment
• Potentiometer adjustment from 0.5 to 1 second
• Enables users to adjust BALANCE (offset voltage) and RATE

The Desco 50940 is an Ion bar controller with recessed potentiometer adjustment.

There are two adjustments that can be made to the controller:

• BALANCE (offset voltage)
• RATE

The BALANCE of positive and negative ion output can be adjusted to increase polarity bias by turning the BALANCE CONTROL, slowly turning clockwise to increase positive and decrease negative ON time pulses, or counter-clockwise to increase negative and decrease positive ON time pulses.

The RATE or pulse frequency can be adjusted down to one pulse per second or up to 20 pulses per second by slowly turning the RATE CONTROL clockwise to increase and counter-clockwise to decrease the frequency.