Phone: 978-562-5353
Fax: 978-562-8986
olc@onlinecontrols.com

"Precision Air Pressure Regulation for plastic extrusion
and Motorized Potentiometers"

MicroAir series of Ultra Low Pressure Air Regulators and Controllers for Manufacturers of Extruded Tubing.

MicroAir I

The MicroAir provides precise control of tubing outside diameter by regulating air pressure to a set point during the manufacture and extrusion of tubing. MicroAirs are used for air regulation and control for precise air sizing of extruded plastic tubing. Pressure is maintained for widely varying flow rates such as when a cut is made, etc.

MicroAir II

Standard ranges, available on all models, are 0-5" of water, 0-15" of water, 0-30" of water, 0-3 psi, and 0-5 psi. Other ranges down to 0-2" of water are available. Maximum 0-5 psi.

Each MicroAir includes a Dwyer Instruments, Inc., magnehelic pressure gauge accurate to 2% of full scale. A fluid filled chamber mounted below the pressure relief valve adds viscostatic damping to ensure stable, hysteresis free operation. Repeatability is better than 1% of full scale. Full scale is the maximum air pressure output ordered.

MicroAir I, MicroAir II and MicroAir IV units are built in stainless steel enclosures. Size for single channel units is 12" x 10" x 6".

A 3-year Factory Warranty is offered on all units.

All units are built in the United States of America at our Hudson, Massachusetts facility.

For NEW Catalog Sheet pdf download click: MicroAir Catalog Sheet

MicroAir I Ultra Low Pressure Air Regulator

Pressure Control: The set point may be adjusted manually on a MicroAir I. When connected to standard factory air supply, the MicroAir's regulator balances the output pressure against a low-tension spring and expels surplus air to the atmosphere. This "force balance regulator" provides nearly instantaneous response to changes in flow rate and maintains a set pressure with flow rates from near zero up to the rated maximum. Manual model controlled by a single 30 turn adjustment knob.

Air Input: The air inlet is connected to normal factory air which has been regulated down to approximately 50 psi.

MicroAir II Ultra Low Air Pressure Regulator and Controller

Pressure Regulation and Control: The MicroAir II accepts Air Up and Air Down contact closure inputs from a Diameter Gauge, or other controllers with up/down contact closures or logic outputs. Pressure is regulated by balancing against a low tension spring and by venting the surplus air. Two front panel buttons for manual control and the externally controlled inputs for auto control adjust the pressure set point by means of a small motor which adjusts the spring tension. Indicators show Up, Down, and Limit conditions. Zero to Full Scale in approximately 2 minutes.

Air Input: The air inlet is connected to normal factory air which has been regulated down to approximately 50 psi.

Power: 115/220 VAC power. 50/60 Hz

Options:

Digital LED pressure readout with 0.1 inch of water resolution.

Voltage pressure output - Can be 1-6 VDC (with 1 volt = 0 psi out; 6 volt = full scale psi out); 0-5 VDC or 0-10 VDC

4 - 20 ma output, 500 ohm max load (4 ma out = 0 psi out; 20 ma out = full scale psi out)

MicroAir IV

MicroAir IV Ultra Low Pressure Air Controller for Manufacturers of Bump and Tapered tubing.

Application: The MicroAir IV is specifically designed for the manufacturers of bump tubing where the pressure must be switched quickly or varied in a controlled way. The MicroAir IV accepts a logic input to select one of two set points, and a zero to 10 VDC analog input to provide any pressure from near zero to full scale instantaneously.

Operation: The MicroAir IV is connected to normal factory air within the range of 50 to 120 psi. It then regulates to the pressure set by a 0 to 10 volt input, or to one of the two manually set pressures by expelling surplus air. A precision voice-coil linear motor with viscostatic dampling ensures optimum speed and stability.

Operational Modes: In Dual-state mode a logic signal selects which of two pressure set points is active. The Hi and Lo set points are adjusted with front panel buttons. In Linear mode a zero to 10 volt input controls pressure and the adjustable set points are ignored.

Performance: The MicroAir IV responds to a step of 50% of full scale in less than 0.1 second (typically 20 msec) and maintains an accurate pressure at flow rates between zero and a maximum SCFH depending on the full scale range.

Power: 115/220VAC. 50/60 Hz

Options:

Digital LED pressure readout with 0.1 inch of water resolution.

Voltage pressure output - Can be 1-6 VDC; 0-5 VDC; or 0-10 VDC

4 - 20 ma output

Contact Closure - NEW - would add the benefit of UP/Down contact closure inputs to emulate a MicroAir II. Making the MicroAir IV an all-in-one-unit.

MultiAir - Multiple Channel MicroAir Units

For Multilumen applications the MicroAir units are offered with up to four channels in a single stainless steel enclosure with one air inlet.

Air Input: The air inlet is connected to normal factory air which has been regulated down to the 50 - 60 psi range.

Models available:

Dual MicroAir I (16.5" x 10.5" x 6")

Dual MicroAir II (16.5" x 10.5" x 6")

Dual MicroAir IV (16" x 12" x 6")

MultiAir 3-channel MicroAir I (23" x 12" x 6")

MultiAir 3-channel MicroAir II ("23 x 12" x 6")

MultiAir 3-channel MicroAir IV (22" x 13" x 6")

MultiAir 4-channel MicroAir IV (29" x 13" x 6")

SALES

Our MicroAir units are sold factory direct from our Hudson Massachusetts plant;
and through (OEM) manufacturers such as:
American Kuhne americankuhne.com
Davis-Standard Corporation davis-standard.com
RDN Manufacturing Company rdnmfg.com
Monolithic Industries monolithicindustries.com

and OD gauge manufacturers.

On Line Controls prides itself on being dedicated to applying our knowledge and resources to understand and meet our customer needs. Our products are delivered throughout the United States and internationally.

For pdf download click: MicroAir Specifications or MicroAir Description and Mounting

COMING SOON

The "MicroAir V" will have all the features of the MicroAir II and MicroAir IV in one unit and have networking capabilities. It should be available in 2010.

For a quotation: Tel: 978-562-5353 Fax: 978-562-8986 or Email: olc@onlinecontrols.com