Specifications

Catalog PCC-2/USABasic FeaturesSensingPneumatic SensorsIndexPNEUMATICPRESSURE ANDVACUUM SWITCHESThese devices monitor the presure of afluid (air, water, oil or vacuum). Pressuresfrom -30" (vacuum switches) to 130 PSI(pressure switches) can be detected inseveral ranges depending on the modelselected. (See pressure switches in logicsection for further details.)Electrical OutputPneumatic OutputBLEEDSENSORSBleed sensors are used for the sensingof low forces and short travel. They aresimple to install and connect. Thedetected object blocks the bleed air atlow flow. An increase of pressure in tube(T) creates a pneumatic signal (S) on therelay equal to the supply pressure (P).Relay forbleed sensorOutput (S)Supply (P)TIncorporatedbleedsensorBall rollerbleedsensorCast wiskerbleedsensorCSensingFLUIDICPROXIMITY SENSORSFluidic proximity sensors are used whenthe application requires non-contactsensing of the moving part. A fluidicsensor emits a continuous air jet (A) atlow pressure. When the object to bedetected interferes with this air jet, aback pressure (a) is created. When thisback pressure reaches the amplifierrelay, an output signal (S) is generatedequal to supply pressure (P).Supply (P)Supply (P)Output (S)RegulatorAmplifier relaySignal (a)AFluidproximitysensorPx = 1.5 to 3 PSI (100 mb to 200 mb)Pneumatic3Parker Hannifin CorporationPneumatic DivisionRichland, Michigan