Manual

© CONDEC 2001 • All rights reserved • Printed in the United States of America • Specifications subject to change without notice
March 2001
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65371
Orion -2D
Precision Pneumatic Controller
Orion-2D Pneumatic Pressure Controller
part #55286, Patent No. 4.698.998
SPECIAL FEATURES:
• Orion-2D is a variable volume pressure controlled with on operating pressure from vacuum to
300 psi. It consists of two low torque, fine micro-metering valves with positive shut-off,
adjustable stop and soft seat. The pressure valve controls the inlet pressure and the other
valve vents to atmosphere.
• The vernier is located at the center of the controller and allows the operator a very fine
pressure adjustment (approx. ±5% point max.) without using the pressure or vent valve.
• Selecting the appropriate O-ring material may extend the wide range of gas applications.
• There is one inlet, one outlet, and two test ports. One test port may be used to connect a
pressure transducer or pressure gauge standard; the other test port may be used to connect
the unit under test.
OPERATION:
The pressure valve will begin to open when it is turned counter clockwise approximately 15
degrees. Full open position of the valves is achieved with a maximum of 3 1/2 turns from the
closed position. Use the pressure/vent valves to achieve ±95% of the target pressure. The
pressure and vent valves must be closed before operating the vernier. The vernier is a piston
and cylinder configuration, which generates ±5% pressure, or vacuum of the indicated
pressure. The vernier has a fine adjustment sensitivity of .0005 psi. Very low torque is re-
quired to turn the vernier... FINGERTIP ADJUSTMENT!!!!!
SPECIFICATIONS:
• Pressure Range: 0-300 psi and vacuum
• Proof Pressure: 325 psi
• Pressure & Vent Valve Orifice: .032
• CV: .007
• Mechanical Rotation: 3 1/2 Turns (nom.)
• Torque: Fingertip adjust
• Vernier Volume: 1/2 cubic inch (nom.)
• Mechanical Rotation: 16 turns (nom.)
• Adjustable Sensitivity: .0005 psi
• Construction: Aluminum body clear anodize aluminum knobs, black anodize all other parts 300 series stainless
O-Rings Buna “N” STD, others available. (All stainless steel construction available for use with corrosive gases
and, or high pressure up to 10,000 psi. Refer to model: Orion 3A pressure pontroller.)
• Weight: 3.0 Lbs.
• O-ring repair kits: Buna-N (standard) (part #58499); Ethylene-Propylene (part #58506);
Silicone (part #58509); Neoprene (part #58515); Fluorocarbon “Viton” (part #55277).
Note: Various O-ring materials may be installed in Orion-2D by special order.