DEscriptION

SPECIFICATIONS

The Proportion-Air, Inc. MizAir® is a revolutionary new device that is specifically

designed to reduce air consumption of Air Operated Double Diaphragm

(AODD) Pumps. Its unique air delivery management allows for

the reduction of air consumption by up to 50% with minimal loss of fluid

flow. The only requirements from the user of the MizAir is a 24VDC

power source and to insure the MizAir is close coupled to the pump.

The MizAir utilizes a microcontroller controlled air dispensing system.

The MizAir consists of a high-flow normally-open two-way valve and an

electronic control unit. The high-flow normally-open valve delivers precisely

timed pulses of air to the pump at the beginning of each pump stroke.

The MizAir valve then closes before the pump finishes its stroke. The air

that has already entered the pump and has started the pump stroke is left to

continue expanding and finish the stroke. This results in the pump ending

its stroke with less air entering the pump for a given amount of fluid being

pumped. Since less air enters, there is less air to exhaust as well. This helps the pump start its next

cycle because there is less resistance to the return stroke. Less exhaust also produces lower exhaust

noise levels.

The MizAir utilizes an internal pressure sensor to monitor the air being supplied to the pump. The

characteristics of this pressure signal allow the MizAirs microcontroller to determine where the pump

is in its stroke. This information is used to time the pulses of air entering the pump. The MizAir is an

intelligent device and is able to continuously monitor the speed and operating parameters of the pump

and make adjustments to the valve timing as needed

The valve is designed and built by Proportion-Air, Inc. to meet the demanding requirements of diaphragm

pump control. The MizAir has a fast response time (<30ms), low power consumption

(<275mA @ 24Vdc) and high cycle life (more than 25 million cycles). The result is a lightweight

compact anodized aluminum two-way valve which is mounted directly to our control circuit in a

NEMA 4X rated assembly which is ideally suited to the kinds of environments in which diaphragm

pumps are often installed.