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HAND HELD LOW PRESSURE & VACUUM PUMP

PRINCIPLE
It Is A Screw Type Pump Used To Measure Low Pressure Or Vacuum. It Has Got Two Main Parts One Cylinder And A piston With Pushing Screw And Rotating Knob (4). When We Rotate The Knob In The Clock Wise Direction Pressure Increases And If We Rotate The Knob In The Anti Clock Wise Direction Minus Pressure Develops.
 
PROCEDURE
To Generate Pressure Rotate The Knob In The Anti Clock Direction Until Full Thread Of The Piston Push Rod Appcars Outside The Cylinder. Put The Master Instrument At Position (1) And Put The Instrument To Be Calibrated At Position (2) Using The Extension Cable Provided. Close The Release Valve (3) And Start Rotating The Knob In The Clock Wise Direction Until You Reach The Required Pressure.
To Measure Vacuum Keep The Release Valve Open And Rotate The Knob In The Clock Wise Direction Until The Full Lengqath Of The Poston Push Rod In Side The Cylinder. Put The Master Instrument And The Instrument To Be Tested At The Approproate Positions. Close The Release Valve And Rotate The Knob In The Anti Clock Wise Direction Until You Required The Vacuum.
 
 
   
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