Micro Air
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Ultra Low Air Pressure Regulator and Controllers for Plastic Tubing Extrusion Precise stable air pressure is a critical component in the extrusion of small plastic tubes. A precision internal air adjustment is needed for sizing and structure in the free extrusion of tubing. The outside diameter can be maintained for a wide range of varying flow rates such as when a cut is made or the tubing coiled. MicroAirs provide air support through the pin inside the die to maintain the tubing’s shape and prevent a collapse during the extrusion process. Used to make single-lumen, multi-lumen, balloon, taper, catheters, automotive and medical tubing. IMPROVEMENTS have recently been made for even more precision and accuracy in the internal components of each model. • Regulates air pressure to a set point • Controls outside diameter • Precision output pressure display • Ultra Low ranges: 0 - 3” of water 0 - 5” of water 0 - 15” of water 0 - 30” of water 0 - 50” of water 0 - 3 psi 0 - 5 psi maximum Others available upon request. • Stainless steel enclosure • Hysteresis free regulating action auto control models • High speed model that accepts a 0-10 volt input for control • Multiple channels for multi-lumen tubing. • STAND now available Models Available: MicroAir I Manual model controlled by a single knob (30 turn adjustment) Single, Dual and 3-channel units MicroAir II Accepts contact closure inputs. Up/Down manual control dual speed push buttons on the front or motorized Up/Down remote control ready for solid state or mechanical relays by internal screw terminals. Dual selectable voltage input 110 or 220 volt. Zero to Full Scale in approximately 2 minutes. Options: Digital display, output, and remote Single, Dual and 3-channel units MicroAir IV Dual-state using a logic signal or linear mode using a 0-10 volt input to control pressure by extrusion line equipment. Instantaneous switching between pressures for use in manufacturing bump and tapered tubing. A precision voice-coil linear motor with viscostic damping ensures optimum speed and stability. Control knobs for Hi and Low set points. Responds to a step of 50% of full scale in less the 0.1 second. Options: Digital display and outputs. Single, Dual, 3-channel and 4-channel On Line Controls, Inc, 697 Hartford Turnpike, Shrewsbury MA 01545 USA www.onlinecontrols.com Phone: 978-562-5353 * Fax: 978-562-8986 * Email: olc@onlinecontrols.co

Case Dimensions Power Inputs Control Inputs Dual MicroAir I DMAI Dual MicroAir II DMAII *Up/Down Manual control dual speed-push buttons * Motorized Up/ Down remote control ready for solid state or mechanical relays 110/220 VAC 50/60 Hz Selectable 3 conductor grounded IDC power cord (supplied) 3 Internal screw Terminals Up/ Down / Gnd Up/Down Inputs Open: Inactive Close to Gnd: Active *Additional (LED) Digital pressure readout *Voltage pressure output — 0-10 VDC * Current pressure output— 4-20jma * Remote control unit Dual MicroAir IV DMAIV *High speed motorized Up/Down remote control ready...