BASIC INSTRUMENTATION CH.5 Flashcards
A SIGNAL THAT IS CONTINUOUS AND HAS AN INFINITE NUMBER OF POINTS BETWEEN ITS BEGINNING AND ENDING VALUES WOULD REFER TO AN ANALOG SIGNAL
TRUE
VOLTAGE TRANSMITTERS ARE 4-WIRE TRANSMITTERS
TRUE
ON A PROPORTIONAL CONTROLLER THE DESIRED SET POINT AND PROPORTIONAL BAND ARE USUALLY ADJUSTED WITH A POTENTIOMETER
TRUE
ADDING TIME IS THE TIME IT TAKES THE CONTROLLER TO ADJUST ITSELF BACK TO ITS SET POINT
TRUE
A PROPORTIONAL PLUS INTEGRAL CONTROLLER CAN BE USED FOR THE CONTROL OF FLOW GAS AND LIQUID PRESSURE OR TEMPERATURE AND LEVEL APPLICATIONS
TRUE
PID CONTROL SYSTEMS CAN BE USED IN ALL SYSTEMS BUT PERFORM ESPECIALLY WELL IN SYSTEMS THAT HAVE LONG DELAYS
TRUE
PLC’S ARE PROGRAMMABLE LOGIC CONTROLLERS THAT PERFORM MANY LOGIC FUNCTIONS
TRUE
COMMUNICATIONS BETWEEN CONTROLLERS AND COMPUTERS ALLOW
ALL OF THE ABOVE
HUMAN MACHINE INTERFACE IS EQUIPMENT THAT ALLOWS THE OPERATOR TO INTERFACE WITH THE SYSTEM
TRUE
DATA TRANSMISSION RATE IS USUALLY EXPRESSED IN
BAUDS