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1,150 Results Found
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AutoQuiz: What Is the Best Location in an HMI for the Graphic Display of a Distillation Column?
A distillation column refers to one piece of equipment in the distillation process, which will contain several loops. -
AutoQuiz: Can You Identify the P&ID Symbol?
A "circle" enclosed in a "square," which indicates it is an instrument with a shared display or a shared control. -
AutoQuiz: What Is PID in a Control Loop?
The PID term as described refers to the loop control technique used in controllers. A PID control loop includes proportional, integral, and derivative functions to control the process. -
AutoQuiz: Line Symbol Identification
Line symbol from ISA-5.1-1984, revised 2009. -
AutoQuiz: Can You Identify Instrument Line Symbols?
ISA-5.1-1984 (Revised 1992) - Instrument Symbols and Identification. -
AutoQuiz: How to Minimize Electrical Interference with AC Power and DC Signal Wiring in a Control Panel
Crossing the wires at 90 degrees will minimize the exposure of the wires to each other and therefore minimize the effects of interference. -
AutoQuiz: What Is an Industrial Process Variable?
The controlled variable by definition is the variable that the control system attempts to keep at a "set point" value. -
AutoQuiz: How to Choose Best Method for Level Measurement
Radar does not depend on temperature or composition of a fluid as long as the beam is narrow and the dielectric constant of the fluid is greater than two. -
AutoQuiz: How to Measure Pressure in a Tank
Perform the calculation using dimensional analysis from conversion tables 33.9 ft water equals one atmosphere equals 14.696 lbf /in2 (psi). -
AutoQuiz: How to Calculate the Rated Torque for a Motor
The volts-per-hertz ratio (V/Hz) controls the torque of a motor. -
AutoQuiz: Standard Range for Pneumatically Transmitted Signals
For the sake of ease and safety, Industry recognized it is better for an operator to monitor and control processes in a more convenient and protected place -
AutoQuiz: How to Measure the Resistance of a Conductor
The resistance of a length of a conductor can be determined using the specific resistance and the cross-sectional area by using the equation R = r L/A -
Future Engineers Benefit from ISA Student Sections
Students benefit from active participation in ISA section activities. They can network with working professionals and learn about career opportunities. -
AutoQuiz: Level Reading with a Differential Pressure Cell
If a differential pressure cell is not at an elevation that corresponds to zero percent level in a tank, calibrate to account for difference in elevation. -
AutoQuiz: Which Control Valve Style Is More Likely to Develop a Blockage?
Ball, butterfly, and pinch valve body style have straight-through flow, and they are less likely to develop blockage. -
AutoQuiz: How to Calibrate a Magnetic Flowmeter
Magnetic flowmeters use Faraday's law of magnetic induction as the basis of their operation. -
AutoQuiz: What Are Acceptable Hazardous Location Protection Techniques for Industrial Areas?
Hazardous location protection techniques are defined by NEC 500.7 (NEC 2002 Code). -
AutoQuiz: When Does an Instrument Need to Be Recalibrated?
Analysis of a calibration plot will help you determine when an industrial instrument needs to be recalibrated. -
AutoQuiz: What Is the Standard for Embedded Software for a SIL 3 Certified Safety System?
According to IEC 61511-1, embedded software, which is part of the safety device/ controller, should follow software guidelines in IEC 61508-3. -
AutoQuiz: How to Calculate the Inherent Flow Characteristic of a Valve
The inherent flow characteristic is the relationship between valve capacity and valve travel, and it is usually expressed graphically.
