QB3H Electronic Pressure Regulator Pressure ranges from vacuum to 500psig Available in lightweight aluminum or oxygen compatible brass bodies High forward and high relief flows Stainless steel internal pressure sensor for industrial durability Standard with 0-10VDC analog output signal FUNCTIONAL DESCRIPTION The QB3H is an electronic pressure regulator capable of operating at high pressures (to 500psig/34.47 bar) and high forward and relief flows (to 50scfm/1416slpm). The QB3H consists of two solenoid valves which add or subtract pressure to the pilot of an integral volume boosting regulator. An internal stainless steel pressure sensor measures the output pressure of the integral regulator and sends this signal to the onboard controller. This controller then modulates the two solenoid valves to match the integral regulator’s output pressure to the user’s requested command signal. All brass body units are oxygen cleaned at the factory. GENERAL SPECIFICATIONS ELECTRICAL Supply Voltage….………….…..15-24 VDC Supply Current…………………250mA (MAX) Command Signal.………………4-20mA Differential 0-10 VDC Differential Command Signal Impedance…..100 OHM (Current) 10K OHM (Voltage) Monitor Signal…………………4-20mA Sinking 4-20mA Sourcing 0-10 VDC (Standard) Max. Inlet Pressure….550 psig Pressure Ranges………29.9 in. Hg (VAC) through 500 psig (34.47 bar) Filtration Required…..40 micron Linearity/Hysteresis….< 0.5% F.S. B.F.S.L Repeatability…………< 0.2% F.S. Wetted Parts…………Brass Body: Nickel Plated Brass Stainless 17-4 ph Viton Aluminum Body: Nickel Plated Aluminum Nickel Plated Brass 17-4 ph Stainless Buna-N MEDIA COMPATIBILITY Air/Inert Gas Oxygen (Brass Body Only) BRQB3H 11/06/06 DC

A = NICKEL PLATED ALUMINUM BODY B = NICKEL PLATED BRASS BODY COMMAND INPUT xxx MAXIMUM CALIBRATED RANGE Vacuum through 500psig* E = 0-10VDC (Standard) C = 4-20mA Sinking S = 4-20mA Sourcing Sxxx SPECIAL OPTIONS S = Special option xxx = Option number Blank = No option EXAMPLES 100 = 0-100 PSI 500 = 0-500 PSI * Check special options for Pressure ranges not starting at “0” psig PROPORTION-AIR, INC. BOX 218 MCCORDSVILLE, IN USA 46055 PHONE: (317)335-2602 FAX: (317)335-3853 web site: www.proportionair.com email address: [email protected]