QB3H0 pages

QB3H
Electronic Pressure Regulator

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Pressure ranges from vacuum to 500psig

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Available in lightweight aluminum or
oxygen compatible brass bodies

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High forward and high relief flows

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Stainless steel internal pressure sensor
for industrial durability

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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

MECHANICAL

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

PHYSICAL
Operating temperature....32-158°F (0-70°C)
Weight…………………Brass 2.8lbs. (1.27kg)
Aluminum 1.4lbs. (0.64kg)
Protection Rating………NEMA 4/IP65
Housing………………..Anodized Aluminum

MEDIA COMPATIBILITY
Air/Inert Gas
Oxygen (Brass Body Only)
BRQB3H
11/06/06 DC