Proportioning Feedforward action
Feedforward control works by directly modulating the manipulated variable in a control system according to changes sensed in the load(s).
Search Results for: fieldbus
Modbus : History, Structure, Modes, Addressing, Functions
Modbus primary purpose was, of course, to exchange data between PLCs and other devices in the industrial plants.
Flow Meter Installation Guidelines
Flow measurement accuracy of any flow meter becomes compromised is incorrect installation, and pressure-based flow meters are no exception to this rule.
Magnetostrictive Level Measurement
A variation on the theme of echo-based level instruments, where the level of some process material in a vessel is
Radar Level Measurement
Radar level instruments measure the distance from the transmitter (located at some high point) to the surface of a process
Basics of Differential Pressure Transmitters
One of the most common, and most useful, pressure measuring instruments in industry is the differential pressure transmitter. This device
Strain Gauge Working Principle
Strain Gauge Sensors or Piezoresistive sensors Piezoresistive means “pressure-sensitive resistance,” or a resistance that changes value with applied pressure. The
Dome Valve Working Principle
Dome Valve is a pressure tight compressed air operated valve, capable of returning over one million maintenance-free cycles, even in abrasive,
Digital Control Systems Multiple Choice Questions
Digital Control Systems Multiple Choice Questions Question 1 The acronym DCS stands for: (A) DeltaV Console Services (B) Distributed Control
Instrument Calibration Multiple Choice Questions
Instrument Calibration Multiple Choice Questions Question 1 Identify the type of instrument calibration error(s) shown in this graph: (A) Hysteresis