ISQB1 ELECTRO-PNEUMATIC CONTROL VALVE0 pages

ISQB1
ELECTRO-PNEUMATIC CONTROL VALVE
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FM approved for CLASS 1 DIV 1 areas
Pressure ranges from full vacuum through
150psig
NEMA4/IP65 housing
No bleed design
Not sensitive to mounting position or
vibration
Use with air piloted regulators for high
flow

FUNCTIONAL DESCRIPTION
The ISQB1 series control valve is an electronic pressure regulator designed to precisely and proportionally control the pressure of gaseous media based on an electronic control signal.
The ISQB1 operates using two normally closed solenoid valves, a pressure sensor, and a control circuit. One valve is actuated to allow supply media into the system. The second valve is actuated to allow working media to vent through a threaded
port to atmosphere. The pressure sensor provides feedback to the control circuit. The control circuit compares the pressure
sensor feedback to the user supplied electronic command signal and actuates the appropriate valve until the two signals
match.
The ISQB1 series can be teamed with a variety of air piloted pressure volume boosters for even greater flow.

GENERAL SPECIFICATIONS
ELECTRICAL

MECHANICAL

Supply Voltage….………….…..14.5VDC-29VDC (MAX)
Supply Current…………………<80mA
Command Signal.………………4-20mA Differential
Command Signal Impedance…..100 OHM

Pressure ranges…………...…29.9 in. Hg (VAC) -150 psig (10.3bar)
Output Pressure……………...0-100% of range
Flow Rate…………………….0.80 SCFM @ 80 psig
Min. Closed End Volume……1 in³
Filtration Required…………..20 micron
Linearity/Hysterisis…………..< 0.4% F.S. B.F.S.L
Repeatability………………....< 0.2% F.S.
Accuracy……………………..< 0.5% F.S.
Wetted Parts…………Elastomers-Fluorocarbon
Manifold-Brass
Transducer-Silicon, Aluminum, RTV
Valves-Nickel Plated Brass

PHYSICAL
Operating temperature…..…..…32-150ºF (0-70ºC) (T4)
Weight………………………….2.5 lb. (1.1 kg)
Protection Rating……………….NEMA 4
Housing…………………………Anodized Aluminum
See Installation & Maintenance Guide ISBQ1-MS1 for
proper installation.

HAZARDOUS AREA CLASSIFICATION
Intrinsically Safe……...Factory Mutual Approval- Class I, II, III, Division 1Groups C,D,E,F,G
Entity Parameters……..V Max = 29VDC
I Max = 150mA
Ci = 0.24uF
Li = 0
Field Wiring Drawing: ISQB-96026-2
BRISQB
07/12/07 DC