Entek-NovaStrobe-DB-Plus-User-Manual操作说明书手册

NovaStrobe Stroboscope Model DB PlusA6a品m8na115/230IntroductionA stroboscope is used to "stop"the motion of a rotating object for diagnostic inspection and/or tomeasure the rotational speed of the object.When the meterprovides an accurate reading,the rotation of the device willappear to have stopped.The flash rate is controlled by anadjustment knob,which varies the flash rate in 0.1 flashes perminute increments.The knob has 36 steps,or clicks,perrevolution,allowing definite adjustment and can be turnedcontinuously.This strobe can be hand-held or mounted oneither a tripod or a bracket.Figure 1:StroboscopeOperationTo evaluate a motor or other rotating system,the object being measured should be visible for all360 of rotation,and the object must have some unique part on it such as a bolt,an imperfection,or a mark to use as a reference point.The reference point allows the user of the stroboscope todistinguish rotation as the strobing "stops"the rotation.If a reference point is not available,use the manufacturer's specifications of the motor in order toget within the range of its true speed.The figure below is a representation of a motor as it isperceived with the Stroboscope at different flash rates.For this example,the motor is rotating at3000RPM.143 times142 times1time2tmes3tmes45100015003006000970012000Portion of device(Actual RPM)with ref信阳s图PontFigure 2:Stopped images for a motor rotating at 3000 RPM.1.Point the strobe at the object,pull the trigger,and begin measurement at the highestflash rate.Adjust the flash rate down until a single still image of the reference point appearsA single,still image occurs when the reference point appears to be fixed in an exact location.Novastrobe-Stroboscope Model DB Plus 115/230Page 1 of3Copyright,Pacific Gas and Electric Company,all rights reservedwww.pge.com/pec