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ELECTRO PNEUMATIC CONTROL VALVES
ELECTRO PNEUMATIC CONTROL VALVES
The document provides detailed specifications and operational guidelines for the QBT and QBS series of precision pressure control devices by Proportion-Air. These devices are designed for controlling pressure from vacuum levels up to 300 psi (21 bar) for QBT and up to 500 psi (35 bar) for QBS.
Key Features:
- Both series are housed in IP65 enclosures, making them resistant to environmental factors and suitable for washdown applications.
- They are unaffected by shock, vibration, and supply pressure changes, ensuring reliable performance.
- Non-air consuming in steady state, reducing manufacturing costs.
- Available with a wide range of electrical control inputs and analog outputs.
- Can be mounted in any orientation directly on machinery.
Technical Specifications:
- Operating temperature ranges from 32ºF (0ºC) to 158ºF (70ºC).
- Pressure ranges are customer specified, with QBT up to 300 psig and QBS up to 500 psig.
- Accuracy and repeatability are specified with minimal hysteresis.
- Electrical supply voltage ranges from 15VDC to 24VDC with various command signal options.
Theory of Operation:
The QB series utilizes Proportion-Air’s patented closed-loop control technology. The QB1 model operates on a single loop control scheme, while the QB2 model uses a double loop control scheme, incorporating feedback from an external sensor for enhanced control over various parameters.
Performance Characteristics:
- Linear response to command signals, with performance charts illustrating pressure and flow characteristics.
- Inlet pressure ratings vary based on the maximum calibrated pressure of the device.
Ordering Information:
The document includes detailed ordering information, specifying options for command input, monitor signal, maximum calibrated range, and manifold material. Accessories such as mounting brackets and power cords are also listed.
Warranty and Safety:
Proportion-Air offers a one-year warranty against defects in material or workmanship. The document emphasizes the importance of proper installation and supervision by qualified personnel to avoid risks.
Catalog excerpts
BRPS4515-24 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:10.00pt "Arial", sans-serif; } .font2 { font:11.00pt "Arial", sans-serif; } .font3 { font:14.00pt "Arial", sans-serif; } .font4 { font:22.00pt "Arial Black", sans-serif; } .font5 { font:47.00pt "Arial Black", sans-serif; } .font6 { font:13.00pt "Times New Roman", serif; } .font7 { font:31.00pt "Times New Roman", serif; } BRQB041406E QBIgQB2 ELE CTRO-PaNEMA TIC 1 I - ' RrecfseTC/osecf Loop Contrat t!ccSacyLt/-0.2 to 0.5% F.S. ^ s from Vaiٯ wtojtOO psig (21 bar) Ra⯯gs from Vautfm't$觌OLPSifj (34 bar) }lMMM$tainless V(WnSblë^ith7Atumnum\or Stain/ess IStellManifki; Actual size QB2T shown with optional digital display Let's Talk317-335-2602 P.O. Box218, McCordsville, Indiana 46055 www.proportionair.com
Open the catalog to page 1
BRPS4515-24 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:4.00pt "Arial", sans-serif; } .font1 { font:6.00pt "Arial", sans-serif; } .font2 { font:8.00pt "Arial", sans-serif; } .font3 { font:11.00pt "Arial", sans-serif; } .font4 { font:7.00pt "Times New Roman", serif; } .font5 { font:13.00pt "Times New Roman", serif; } THE INSIDE STORY OF THE QBT: Access hole allows adjustments in the field. Easy tuning of Zero & Span calibration potentiometers Precision pressure control vacuum to 300 psi (21 bar) Available in a wide range of electrical control input and analog...
Open the catalog to page 2
BRPS4515-24 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:4.00pt "Arial", sans-serif; } .font1 { font:6.00pt "Arial", sans-serif; } .font2 { font:8.00pt "Arial", sans-serif; } .font3 { font:10.00pt "Arial", sans-serif; } .font4 { font:11.00pt "Arial", sans-serif; } .font5 { font:5.00pt "Times New Roman", serif; } .font6 { font:7.00pt "Times New Roman", serif; } THE INSIDE STORY OF THE QBS: Prթcision pressure control vacuum to 500 psi (35 bar) Available in a wide range of electrical control input and analog outpu Internal stainless steel pressure sensor, that utilizes...
Open the catalog to page 3
BRPS4515-24 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:8.00pt "Arial", sans-serif; } .font2 { font:10.00pt "Arial", sans-serif; } .font3 { font:11.00pt "Arial", sans-serif; } FUNCTIONAL The QB Sries uses Proportion-Air's patented technology for closed loop control. The QB Series valves can be built in either a single loop or double loop control scheme. The QBT Series is used to control pressure of inert gases from full vacuum up to 300 psig (21 bar). The QBS is used in applications where the maximum calibrated pressure...
Open the catalog to page 4
BRPS4515-24 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:7.00pt "Arial", sans-serif; } .font2 { font:10.00pt "Arial", sans-serif; } .font3 { font:11.00pt "Arial", sans-serif; } .font4 { font:10.00pt "Times New Roman", serif; } QB GENERAL SPECIFICATIONS & PERFORMANCE CHARACTERISTICS ELECTRICAL MINIMUM TYPICAL MAXIMUM Supply Voltage 15VDC - 24VDC Supply Current 100mADC - 250mADC Command Signal Voltage 0VDC - 10VDC Current 4mADC - 20mADC Analog Monitor Output Voltage 0VDC - 10VDC Current 4mADC - 20mADC Command Signal Impdance...
Open the catalog to page 5
BRPS4515-24 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:3.75pt "Arial", sans-serif; } .font1 { font:4.00pt "Arial", sans-serif; } .font2 { font:6.00pt "Arial", sans-serif; } .font3 { font:7.00pt "Arial", sans-serif; } .font4 { font:8.00pt "Arial", sans-serif; } .font5 { font:10.00pt "Arial", sans-serif; } .font6 { font:11.00pt "Arial", sans-serif; } .font7 { font:22.00pt "Arial Black", sans-serif; } .font8 { font:8.00pt "Tahoma", sans-serif; } .font9 { font:8.00pt "Times New Roman", serif; } .font10 { font:10.00pt "Times New Roman", serif; } PERFORMANCE CHARACTERISTICS...
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BRPS4515-24 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:10.00pt "Arial", sans-serif; } .font2 { font:11.00pt "Arial", sans-serif; } .font3 { font:12.00pt "Arial", sans-serif; } .font4 { font:13.00pt "Arial", sans-serif; } ORDERING INFORMATION D QB 1 S A 500 S133 SERIES MONITOR COMMAND INPUT MONITOR SIGNAL MAXIMUM CALIBRATED RANGE Vacuum -500psig* SPECIAL OPTIONS DIGITAL DISPLAY* MODEL MANIFOLD MATERIAL** = 0-10 VDC 4-20 mA Single Loop Double Loop I I QBT Series Manifold Option Blank = Brass manifold QBS Series Manifold...
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