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QPV1 Electronic Pressure Regulator
INSTALLATION AND MAINTENANCE INSTRUCTIONS
DESCRIPTION / IDENTIFICATION
The QPV1 is a high resolution electronic pressure regulator. It
provides a regulated output pressure that is proportional to an
electrical command signal input. The QPV1 is available in a wide
range of calibrated pressure ranges covering vacuum through
150 psig (10 Bar). The QPV1 is available in either 0 -10 VDC or
4-20 mA analog signal types.
The QPV1 is a complete closed loop control valve consisting of two
internal solenoid valves, a manifold, an electronic control circuit
board, and a pressure transducer all contained in a protective
IP65/NEMA4 housing. Pressure is controlled by the use of two
solenoid valves. One valve functions as inlet control and acts to
allow supply media into the system to increase the controlled
pressure. The other solenoid valve acts as the exhaust and will
decrease the controlled pressure by venting to atmosphere.
The inlet solenoid valve operates in a proportional manner to
the current supplied by the QPV1's electronic control circuit.
This variable orifice affect allows precise control of pressure at
low flow conditions and avoids the digital steps of traditional
ON/OFF solenoids. The ability to vary the inlet solenoid valve
orifice opening in an analog fashion allows the QPV1 to control
pressure with extremely high resolution. The exhaust solenoid
is a standard ON/OFF solenoid and allows excess media to be
vented from the system.
The regulated pressure output is measured by a pressure
transducer internal to the QPV1. This pressure transducer
provides a feedback signal to the QPV1's electronic control circuit.
The control circuit compares the internal sensor feedback signal
to the command signal input. Any difference between the two
signals causes the appropriate solenoid valve to open, allowing
flow in or out of the system. Accurate pressure is maintained by
controlling these two valves.
The QPV1 is a relatively low flow regulator. This makes the QPV1
a great choice any time low flow rates or small volumes require
precise pressure control. The QPV1 is often used to provide
the pilot pressure signal to the dome of either an Equilibar®
back pressure regulator or an Equilibar® vacuum regulator. The
QPV1 can then be used to electronically control back pressure
or vacuum pressure in line sizes from 1/8 inch through 6 inch by
pilot operating the appropriately sized regulator.
An electronic monitor output signal from the internal pressure
transducer is provided. All QPV1 valves come standard with an
analog voltage monitor output. A 4-20mA monitor is available
optionally.
The QPV1 series is available in two generations. The older 'T'
models used brass hex fittings in the side of the canister for
the inlet and outlet port connections. An improved 'M' series
uses a solid aluminum base with integral inlet and outlet ports.
Both models have identical performance and are pin- for-pin
compatible. Both models use the same control circuit, solenoid
valves, electrical connector, and internal pressure sensor.
828.650.6590
©2010-2019 Equilibar, LLC
SPECIFICATIONS
ELECTRICAL
SUPPLY VOLTAGE
SUPPLY CURRENT
COMMAND SIGNAL
COMMAND SIGNAL IMPEDANCE
ANALOG MONITOR SIGNAL
PNEUMATIC
PRESSURE RANGES
FLOW RATE
MINIMUM VOLUME
FILTRATION RECOMMENDED
LINEARITY/HYSTERESIS
REPEATABILITY
ACCURACY
RESOLUTION
WETTED PARTS¹
PHYSICAL
OPERATING TEMPERATURE
WEIGHT
PROTECTION RATING
HOUSING
FINISH
¹ Others available
www.equilibar.com
26/06/19 R5
15-24 VDC
350mA required.
VOLTAGE 0-10 VDC single ended
CURRENT 4-20 mA differential
VOLTAGE 10 KΩ
CURRENT 100 Ω
VOLTAGE 0-10 VDC @ 10mA max
CURRENT 4 - 20 mA (Sourcing @ 12 VDC)
29.9 in. Hg (vac) - 150 psig
760 mmHg (vac) - 10.34 BAR)
Based on the inlet valve orifice size
(ORDERING INFORMATION)
1 cubic in (17cc)
20 micron nominal (included)
<±0.15% F.S. BFSL
<±0.02% F.S.
<±0.2% F.S.
<±0.02% F.S.
Elastomers - Fluorocarbon
Manifold - Brass, Anodized Aluminum
Valves - Nickel plate brass
P.Transducer - Silicon, Aluminum
32-158ºF [0-70C]
1.02 lb [0.50 Kg]
NEMA 4 / IP65
Aluminum
Black Anodized Aluminum
Page 1 of 7
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Related Manuals for Equilibar QPV1
Summary of Contents for Equilibar QPV1
- Page 1 The QPV1 is available in a wide range of calibrated pressure ranges covering vacuum through 150 psig (10 Bar). The QPV1 is available in either 0 -10 VDC or 4-20 mA analog signal types. The QPV1 is a complete closed loop control valve consisting of two...
- Page 2 QPV1 Electronic Pressure Regulator QPV1 units come in two styles: ‘T’ and ‘M’. See page 5 for details. To determine which style you have, review your part number against the QPV Part Configuration chart on page 6. Follow instructions for positive pressure or vacuum installation accordingly. If you ordered a vacuum unit with absolute pressure units of measure, follow instructions on installation addendum included in the box.
- Page 3 NOTE: ALL COLOR CODES RELATE TO THE FACTORY WIRED QBT-C-x POWER CORD. VOLTAGE COMMAND VALVES CURRENT COMMAND VALVES All voltage command QPV1’s use single ended voltage, meaning All current command QPV1’s use a differential current loop the DC Common pin (Pin 1) is the common reference for both scheme (not isolated), meaning current flow is from Pin 4 to Pin power and command.
- Page 4 Typical drift is less than 1% over the life of the product. If your range which a QPV1 may be calibrated is typically limited to -20% QPV1 valve appears to be out of calibration by more than 1%, it is to +10% of its original factory calibration.
- Page 5 QPV1 Electronic Pressure Regulator DIMENSIONS - IN [MM] ‘M‘ STYLE UNIT DIMENSIONS OUTLET PORT Port Locations on ‘M’ Units Below 100 psi OUTLET PORT Port Locations on ‘M’ Units Above 100 psi Dimensions for all ‘M’ Units ‘T‘ STYLE UNIT DIMENSIONS MOUNTING BRACKET DIMENSIONS WARNING: Installation and use of this product should be under the supervision and control of properly qualified personnel in order to avoid the risk of injury or death.
- Page 6 (no flow). Dynamic applications (under flow) do not need a bleed orifice to func- tion properly. Consult our Application Engineering Department for your specific application needs. We are here to help you. 828.650.6590 Page 6 of 7 www.equilibar.com ©2010-2019 Equilibar, LLC 26/06/19 R5...
- Page 7 Where danger from overpressurization exists then an additional valve that is designed and marketed as a safety pressure relief valve must be used to protect the QPV1 against excess supply pressure and to protect the system should the QPV produce excess pressure on its outlet.
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