The QB3 is a closed loop pressure regulator consisting of two solenoid valves, an internal pressure transducer, and electronic controls all integrally mounted to our unique volume booster.

THEORY OF OPERATION - The output or “work” pressure is proportional to an electrical input or “command signal”. The pressure is con.trolled by activating the sole.noid valves, which control the pressure in the “pilot” side of the booster. One valve functions as inlet control, the other as exhaust.

The output pressure is measured by a pressure transducer, that senses pressure in the work port of the QB3 and provides a feedback signal to the electronic control circuit. This feedback signal is compared to the command signal input. Any differences between the command signal and the actual pressure feedback signal causes one of the solenoid valves to open to adjust the pressure in the “pilot” side of the booster. Pilot pressure is adjusted so that desired down stream operating pressure is achieved and maintained.

Any mechanical hysterisis of the volume booster is automatically compensated for since it is the actual desired work pressure that is being sensed and fed back to the control circuit. This allows for our extraordinary accuracy and repeatability.

COMMAND SIGNAL - Command inputs come in a choice of either a differential 0-10Vdc or 4-20mA.

MONITOR SIGNAL - All QB3’s come with a 0-10 volt or optional 4-20mA monitor signal, for output to a panel meter or controller for data acquisition or quality assurance needs. The monitor signal represents the internal pressure transducer that is measuring the work pressure.

Providing this monitor signal as part of our standard package eliminates the need for the customer to purchase a separate transducer since the signal is a true depiction of downstream pressure.

INTEGRAL REGULATOR - The uniqueness of the booster design is that it has no stamped gaskets or special molded diaphragm or seal parts. All of the parts related to normal maintenance are standard o-rings.

Complete repair kits are available, but in case emergency repair is needed parts could be available from any fluid power distributor or even most neighborhood hardware stores. A large number of chemical resistant o-rings are available to meet your requirements. You can select the compounds which are most ideally suited to your process and environment.

FOR MORE INFORMATION - LET'S TALK 877-331-1738