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Joel Don
345 Results Found
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FeatureAutoQuiz: Loop Tuning Terminology for Change in Amplitude
The common method of judging tuning is known as the "quarter wave decay" method. It has been shown if a loop is tuned so the oscillation decays with each wave being one quarter of the previous wave, i -
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AutoQuiz: Industrial Applications for Nonincendive-Rated Field Wiring
Nonincendive is allowed in Class 1, Division 2; Class 1, Zone 2, and Non-hazardous rated areas. Use in higher hazard areas, such as Division 1, Zone 1, or Zone 0 areas, is not allowed. -
FeatureAutoQuiz: Standard Wiring Color for Type K Thermocouple
Type K (chromel–alumel) is the most common general purpose thermocouple with a sensitivity of approximately 41 µV/°C. -
FeatureAutoQuiz: What Is the Liquid Flow Condition Where Falling Static Pressure Causes Formation of Vapor Bubbles?
The first stage of cavitation is the formation of vapor bubbles within the liquid system because of the fluid's static pressure falling below the fluid vapor pressure -
FeatureAutoQuiz: What are the Advantages and Disadvantages of RTDs?
Resistance temperature detectors require a temperature transmitter to function. This is not a disadvantage of an RTD, since its function does not require a temperature transmitter to be installed. -
FeatureAutoQuiz: How to Interpret Relay Logic for a Pump Control Switch
When a pump control switch is in auto, the storage tank low level switch or the pressure tank high level switch can stop the pump. -
FeatureAutoQuiz: How to Diagnose Industrial Pressure Sensor Errors
If a pressure sensor/transmitter is giving a non-linear response, replacement of the sensor and/or the transmitter will be required. -
NewsBook Excerpt + Author Q&A: Mission Critical Operations
Mission-critical specialists are in-demand in a variety of critical infrastructure areas, focused on events that could result in serious consequences, such as loss of life, harm to the environment or -
FeatureAutoQuiz: Motor Shaft Speed Relationship to Frequency and Number of Poles
The shaft speed of a motor is directly proportional to the frequency and is inversely proportional to the number of poles. -
FeatureAutoQuiz: How to Measure Tank Differential Pressure
A tank level is measured using a differential pressure transmitter (DPT-1) and a bubbler tube. The tank is vented to atmosphere. -
FeatureAutoQuiz: Nonhazardous Pressurization Systems
A Type X pressurization system reduces the classification within the enclosure from Division 1 to nonhazardous and, therefore, permits the use of ignition-capable equipment inside the enclosure. -
FeatureAutoQuiz: Identify the Function of a P&ID Symbol
In a P7ID diagram, a "circle" enclosed in a "square" indicates it is an instrument that has a shared display or a shared control. -
FeatureAutoQuiz: 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. -
FeatureAutoQuiz: 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. -
FeatureAutoQuiz: 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. -
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FeatureAutoQuiz: Can You Identify Instrument Line Symbols?
ISA-5.1-1984 (Revised 1992) - Instrument Symbols and Identification. -
FeatureAutoQuiz: 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. -
FeatureAutoQuiz: 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. -
NewsBest ISA Webinars of 2017
An ISA roundup of some of the best educational industrial automation industry webinars presented in 2017. -
FeatureAutoQuiz: 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. -
FeatureAutoQuiz: 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). -
FeatureAutoQuiz: How to Calculate the Rated Torque for a Motor
The volts-per-hertz ratio (V/Hz) controls the torque of a motor. -
FeatureAutoQuiz: 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 -
FeatureAutoQuiz: 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 -
FeatureAutoQuiz: 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. -
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Book Excerpt + Author Q&A: Condensed Handbook of Measurement and Control
ISA book is an authoritative resource for anyone responsible for selecting & implementing measurement & control devices for process automation applications. -
FeatureAutoQuiz: 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. -
FeatureAutoQuiz: How to Calibrate a Magnetic Flowmeter
Magnetic flowmeters use Faraday's law of magnetic induction as the basis of their operation. -
FeatureAutoQuiz: What Are Acceptable Hazardous Location Protection Techniques for Industrial Areas?
Hazardous location protection techniques are defined by NEC 500.7 (NEC 2002 Code). -
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Book Excerpt + Author Q&A: Process Analyzer Systems Project Engineering and Management
ISA book helps ease the engineering and design burden for new and experienced engineers who work on process analyzers. -
FeatureAutoQuiz: 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. -
FeatureAutoQuiz: 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. -
FeatureAutoQuiz: 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. -
NewsBook Excerpt + Author Q&A: Safety Instrumented System Design
ISA book on safety instrumented system design helps industrial automation professionals meet the requirements of international safety standards. -
FeatureAutoQuiz: Industrial Electrical Standards for Emergency Operations
The reset of an emergency stop circuit will not initiate a restart. -
FeatureAutoQuiz: What Are the Characteristics of a Piston Actuator?
An actuator is a device that applies the force necessary to cause a valve's closure member to move. -
FeatureAutoQuiz: What Is the Length Limitation for Fast Ethernet Cable?
Because of the high speed of fast Ethernet, the use of twisted pair cable is limited to 100 meters (330 feet). -
FeatureAutoQuiz: How Is Fluid Velocity Affected When the Pressure Drop Across a Valve Increases?
The pressure drop refers to the change or drop in pressure from the upstream side of the valve to the downstream side. -
FeatureAutoQuiz: What Is the Most Appropriate Technique for Modeling Linear Relationships?
The multivariate statistical-process control excels at modeling unknown linear relationships for a large number of inputs that could be correlated. -
FeatureAutoQuiz: What is 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. -
FeatureAutoQuiz: How to Minimize the Effect of Feed Upsets to the Top of a Distillation Column
A distillation tower has feed upsets that are measured and used to create a feed forward signal. -
FeatureAutoQuiz: How to Install an Electromagnetic Flowmeter
The magnetic flowmeter conductor (fluid in pipe) moves through a magnetic field; a voltage is produced relative to speed of the conductor & magnetic field. -
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Book Excerpt + Author Q&A: Calibration Handbook of Measuring Instruments
This is a handy reference and consultation handbook written mainly for operators who verify and calibrate measuring instruments. -
FeatureAutoQuiz: How to Calculate the Transfer Function
A transfer function is a mathematical representation of the relationship between the input and output of a system. -
FeatureAutoQuiz: Which Orifice Plate Is Used to Eliminate Damming of Material at the Top or Bottom of a Pipe?
Orifice plates are in a straight run of smooth pipe away from valves and fittings so they do not interfere with the restrictor and readings. -
FeatureAutoQuiz: Which Fuse Has the Quickest Response to Over Currents?
Certain types of fuses have a very high speed of response to over currents. They provide excellent short-circuit component protection. -
FeatureAutoQuiz: Optimal Beveled Orifice Angle for Flow
An orifice plate inserted in the line causes an increase in flow velocity and a corresponding decrease in pressure. -
FeatureAutoQuiz: What Is the Maximum Level of Precision Available Using Modbus?
To achieve more precision special programming or a specialized version of Modus is necessary. -
FeatureAutoQuiz: What is the Most Common Pressure Tap?
The purpose of pressure taps is prevent gas or vapor accumulations in the connections between the pipe and differential-pressure (dP) measuring device. -
FeatureAutoQuiz: Standard NFPA Wire Colors
NFPA's mission is to reduce fire and other hazards via scientifically based consensus codes and standards, research, training, and education. -
FeatureAutoQuiz: Characteristics of a Control Valve
A rotary valve has a flow closure member that rotates in the flow stream to modify the amount of fluid passing through the valve. -
NewsBook Excerpt + Author Q&A: Basic and Advanced Regulatory Control
This intermediate-level book explains the application of basic and advanced regulatory control strategies for the wet process industries. -
FeatureAutoQuiz: What Type of Electrical Enclosure Resists Corrosion and Provides Protection?
NEC 2002 defines an enclosure Type 4x as ideal for outdoor use and resistant to splashing water, windblown dust, hose directed water, and corrosion. -
FeatureAutoQuiz: What is the Coriolis Effect?
Using the Coriolis effect that causes a laterally vibrating tube to distort, a direct measurement of mass flow is obtainable using a Coriolis flowmeter. -
FeatureAutoQuiz: What Flowmeter Does Not Use an Obstruction?
A magnetic flowmeter is a volumetric flowmeter, which does not have any moving parts and is ideal for wastewater applications or any dirty liquid. -
FeatureAutoQuiz: Best Strategy for Finding Efficient Operating Points with Complex Shifting Process Conditions
Real-time optimization with a detailed process model is the best approach to fining the most efficient operating points. -
FeatureAutoQuiz: What Is the Application for an Impulse Line in Fluid Flow?
Impulse lines connect the process to the pressure transmitter, to reduce the effect of ambient temperature on the transmitter's operability and life span. -
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Book Excerpt + Author Q&A: Driving Business Value in Industrial Innovation
The emerging frontier for industrial innovation points at exciting changes likely to revolutionize the business of manufacturing. -
FeatureAutoQuiz: Why Are Gathering Requirements Critical to the Success of an Automation Project?
Gathering requirements are important because they define the objectives, purpose, scope, needs, and other key meters. -
FeatureAutoQuiz: What Is the Process for a Continuity Check of a Field Transmitter?
A continuity check is performed on a length of finished wire or cable to determine if the electrical current flows continuously throughout the length. -
FeatureAutoQuiz: How to Measure and Compensate for Disturbances to Prevent Set Point Deviance
The objective of feedforward control is to measure disturbances and compensate for them before the controlled variable deviates from set point. -
FeatureAutoQuiz: What Is the Dead Band of an Instrument?
The dead band is the range through which an input signal may vary, upon reversal of direction, without initiating an observable change in output signal. -
NewsBook Excerpt + Author Q&A: Detecting Leaks in Pipelines
Successful leak detection depends on a productive confluence of several situationally dependent technologies. -
FeatureAutoQuiz: How to Simultaneously Optimize an Interacting Dead-Time Dominant Process with Multiple Constraints
Model predictive control excels at dead-time dominance and simultaneous optimization while accounting for future prediction of proximity to constraints. -
FeatureAutoQuiz: What are the Closure Members in Globe and Butterfly Valves?
A butterfly valve has a circular body and a rotary-motion disk-closure member. The physical blocking mechanism in a globe valve is a plug. -
FeatureAutoQuiz: How Do You Assess Peak Performance for an Operating Unit?
Cost sheets show the best periods of operation, and data historians explain the conditions and relationships. -
FeatureAutoQuiz: How to Define the Flow Characteristic for a Valve
A linear flow characteristic is when flow capacity or (Cv) increases linearly with valve travel. Flow is directly proportional to valve travel. -
FeatureAutoQuiz: How to Detect a Fault in a Safety System
A proof test on a system may reveal faults that would otherwise not be mentioned by internal diagnostic measures and is therefore correct. -
FeatureAutoQuiz: How to Calculate the Output Signal Value of a Pneumatic Transmitter
There is a straightforward linear relationship between the units of pounds per square inch (psi) and degrees F (Fahrenheit). -
FeatureAutoQuiz: What is the Cause of a High Process Variability?
An oversized control valve will operate next to the seat where the friction and stick slip is greatest. -
FeatureAutoQuiz: How to Calculate Temperature for an Electronic Transmitter
There is a straightforward linear relationship between the units of milliamps and degrees. -
FeatureAutoQuiz: What is the Operating Principle of an AC Motor?
An AC motor consists of a rotor (rotating portion) with a laminated iron core containing copper bars in the slots. -
FeatureAutoQuiz: What is a Thermowell?
A thermowell is a closed-end tube that surrounds the measuring junction of a thermocouple. -
News
Book Excerpt + Author Q&A: Measurement Uncertainty
The new, expanded fifth edition of ISA's book on measurement uncertainty presents a variety of uncertainty experiments as well as several new appendices. -
FeatureAutoQuiz: How to Calculate Dead Time from Transportation Delay for Thickness Control
The time it takes the sheet to go from the diebolt actuators to the thickness gauge that transverses the sheet is the transportation delay -
FeatureISA Training and Education: First Quarter 2017
The first half of 2017 saw ISA offer many different training and education programs. -
FeatureAutoQuiz: What is the Purpose of a Breadboard in Electronics Applications?
A breadboard is a construction base for prototyping of electronics. -
FeatureAutoQuiz: What Device Is Used to Change an Analog Signal to a Digital Signal?
An analog-to-digital converter is a function that converts an analog signal (current, voltage, or electric charge) into digital data (usually binary) -
FeatureAutoQuiz: How Do You Compensate for Thermowell Lag Time?
Thermowell and temperature processes have multiple interacting thermal lags. -
FeatureAutoQuiz: What Type of Wire Is Used in a Process Control Loop?
The major components of a control system include a sensor, a controller and a final control element. -
FeatureAutoQuiz: Tuning the Temperature Controller for an Exothermic Reactor
The temperature controller for an exothermic reactor must stay in automatic to prevent a runaway reaction. -
FeatureAutoQuiz: What Does a Low Resistance Reading from an Ungrounded Signal Lead Mean?
A low resistance reading from an ungrounded signal lead connected to a ground indicates a problem of a lead having an unwanted connection to ground. -
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Infographic: Tune Your (LinkedIn) Loop
If you haven't updated your LinkedIn profile in a while, you may be missing on professional networking, career and new business opportunities. -
FeatureAutoQuiz: When Is the Best Time to Perform Operator Training?
The best time to train operators for an automation project is after acceptance testing and prior to startup. -
FeatureAutoQuiz: How to Calculate the Speed of a Four-Pole Synchronous Motor
Synchronous speed in RPM = (two × frequency × 60) / (number of poles) -
NewsBook Excerpt + Author Q&A: Industrial Ethernet
Industrial Internet is a guidebook for people who need to fully understand factory floor Ethernet and features new sections on Industrial Internet of Things -
FeatureAutoQuiz: How Do You Avoid a Ground Loop on Shielded Cable?
The best way to avert the ground loop in this question is to ground the shield at only one end of the circuit. -
FeatureAutoQuiz: What Does the Function of the Preset Value Determine in a PLC Timer?
A timer preset for a PLC is a programming value for the timing function. -
FeatureHow to Live Stream Any Meeting or Event Worldwide (Almost) for Free
You can live stream any meeting or event with a smartphone, a good WiFi connection and an account at one of the popular social media platforms. -
FeatureAutoQuiz: Changing the Point of Origin for Input Data and Output Signal Destination with a DCS
A DCS is that class of instrumentation that executes stated control functions and enables transmission of control, measurement and operating information. -
FeatureLearn, Advance and Succeed with ISA Training in November and December
Read this complete roundup of ISA education and training programs for November and December 2016. -
FeatureAutoQuiz: What Type of Actuator Responds to a Pneumatic Signal?
An actuator is a hydraulic, electric, or pneumatic device that moves an object or device. -
FeatureAutoQuiz: What is the Average Human Response Rate to Signals?
ISA's CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional's skills -
FeatureAutoQuiz: In What Position Does a Control Valve with a Direct Acting Actuator Fail?
A direct acting valve travels to the closed position when the signal increases. When there is a failure, there is no signal and power. -
FeatureIndustrial Marketing Tips for 'Distracted' Engineers Gone Mobile
The increasing use of mobile devices means industrial marketers must focus on content optimized to be noticed, consumed and acted upon. -
FeatureAutoQuiz: How to Optimize HMI Screen Design
For HMI screen design, studies show people can remember only a select number of new things for about 20 seconds. -
FeatureAutoQuiz: What Is the Final Control Element in a Process Control System?
A final control element is a device that directly controls the value of the manipulated variable of a control loop. -
FeatureTechnical Training from ISA for October and November
A look at the late-Fall offerings from ISA in 2016. -
FeatureAutoQuiz: What Part of an Industrial Test Procedure Should Be Performed First?
Looking at a mechanical and electrical situation globally to spot obvious and safety threats first is always best.