The Type 550X is an electronic pressure regulator that converts a variable signal (current or voltage) to a proportional pneumatic output. Its compact housing, accessible ports and easy adjustments provide an ideal answer to applications that are space-constrained. This economical instrument provides precision air pressure regulation to actuators, valves, positioners and other final control elements. An integral volume booster provides high flow capacity, increasing control speed in critical applications. Features •Compact Size Great for high density mounting •Easy Wiring Conduit, terminal block or DIN 43650 connections •Mounting Options Wall, panel, DIN rail, pipe or manifold mounted (Type-925) •Input/Output Ports on Front and Back Provides flexible pneumatic connections •External Zero and Span Adjustments Convenient field calibration •Field Reversible Capability Output is inversely proportional to input signal •Intrinsic SafetyApprovals Factory Mutual (FM) Canadian Standards Assoc. (CSA) ATEX option available Accurate and economical electronic pressure control

Compact Housing, Versatile Mounting Functional Specifications Inputs Standard Range Supply psig Pressure (BAR) Air Consumption Flow Capacity Temperature Limits Impedance High Output Range 1.8 scfh (0.05 m3/hr) at mid range typical 4.5 scfm (7.7 m3/hr) at 25 psig (1.7 BAR) 4-20 mA 180 Ohms 0-5 VDC 615 Ohms 0-10 VDC 1230 Ohms 1-5 VDC 495 Ohms 1-9 VDC 985 Ohms 240 Ohms 550 Ohms 1100 Ohms 440 Ohms 880 Ohms 4-20 mA 240 Ohms 0-5 VDC 550 Ohms 0-10 VDC 1100 Ohms 1-5 VDC 440 Ohms 1-9 VDC 880 Ohms Physical Specifications 4-20 mA 245 Ohms 0-5 VDC 520 Ohms 0-10 VDC 1040 Ohms 1-5 VDC 495 Ohms 1-9 VDC 900...

Dimensional Drawings 1/2 inch Conduit Connection (A) Blue areas and dimensions apply to the zero-based unit only 1.00 25.4 .500 12.7 Mounting Holes #10–32 UNF–2B X 3/8 Deep 2 Places .125 Vent 3.17 Blue areas and dimensions apply to the zero-based unit only 3.90 99.0 Pipe plugs installed 4 places on zero-based unit Mounting Options Pipe Mounting Pipe clamp for 1–1/2 pipe DIN Rail suitable for EN-50035, EN-50045 and EN-50022 Rails Blue areas and dimensions apply to the zero-based unit only Blue areas and dimensions apply to the zero-based unit only Panel Mounting Blue areas and dimensions apply...

Magnet Coil Flexure Nozzle Circuit Board Exhaust Valve Supply Pressure Output Pressure Pilot Pressure Atmospheric Pressure Supply Valve The Type 550X I/P, E/P Transducer is a force balance device in which a coil is suspended in a magnetic field by a flexure. Current flowing through the coil generates movement of the flexure. As this assembly moves towards the nozzle, it creates backpressure, which acts as a pilot to an integral booster relay. Input signal increases (or decreases for reverse acting) cause an accurate proportional change in output. Zero and Span are calibrated by turning adjust...