Wilkerson WBA208 Series
Precision Pneumatic Input Signal Amplifier
Features :
• The WBA208 uses a pneumatic input signal to accurately control output pressure based on a predetermined ratio.
• A balanced Supply Valve minimizes the effects of supply pressure variation.
• An Aspirator Tube compensates downstream pressure droop under fl owing conditions.
• Optional Adjustable By-Pass Needle Valve allows tuning for optimum dynamic response
(1:1 ratio only).
• Optional Fixed Negative Bias allows operation with pneumatic devices that cannot be adjusted to zero input pressure.
• A separate Control Chamber isolates the diaphragm from the main fl ow to eliminate
hunting and buzzing.
• Unit construction allows servicing without removal. • Mounting Bracket available.
Types :
WBA20812
WBA20822
WBA20832
WBA208-1-2
WBA208-2-2
WBA208-3-2
Mounting Bracket : PS09921
Service Kits:
1:1 Ratio : PS19513-11
1:1 Ratio w/ By-Pass Valve : PS19513-11I
1:2 Ratio : PS19513-12 1:3 Ratio : PS19513-1