FlowScanner User Guide BBS System Electronic Bulletin Board System. Bench Set The pressure range required to move the actuator from its upper stop to its rated travel without any body frictional forces present. Commanded Current The output current signal commanded by the test and displayed on the test screen. Control Signal The voltage or current signal provided by the FlowScanner to control the valve during testing. Dead Band The range through which an input can be varied without initiating observable response. Displayed Travel Units The unit of measure for travel display, selected from the Options screen. Displayed Force Units The unit of force measure for display, selected from the Options screen. DOS Disk Operating System. Dynamic Error Band (DEB) For any given signal level, the difference between upstroke and downstroke position, expressed as a percentage of total travel. Dynamic Scan Test A test in which the control signal is ramped from a preset starting to a preset ending point at a specific rate. FlowAux The FlowScanner operating software. FlowScanner A portable, self窶田ontained test device for analyzing valve condition and performance. Hold Signal at Test End An option (Other) on the test screen that will hold the current at the minimum preset value at the test end or at its current value if the test is aborted rather than dropping to zero.
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