EPC School

A1: Velocity algorithm
A2: Rotating paddle wheel
A3: Primary controller
A4: Resistive temperature detector (RTD)
A5: Digital
A6: Post-guiding

Here it is another initiative by epc-school. Flashcards are displayed below. Try answer these in comment section. Correct answers will be displayed tomorrow's blog-

Q1: Most commonly used algorithm for digitally executing PID control; the result of taking the difference between two successive iterations of the position algorithm.

Q2: Device for detecting the presence or absence of bulk solids.

Q3: Refers to the feedback controller in the outer loop whose output sets the setpoint for the inner loop controller.

Q4: Device that measures the relationship between electrical resistance and temperature.

Q5: System in which only a number of states are allowed. In binary digital, only two states (0 and 1) are allowed. In the decimal system, only ten states (0 through 9) are allowed.

Q6: Design in which a guide bushing or bushings are fitted into the body, bonnet, and/or bottom flange so as to guide a plug's post.

Top Guided & Cage Guided Valves - By Defination

Refer link below-

http://epcreference.blogspot.in/2013/04/top-guided-cage-guided-valves-by.html


Also Check
Quick Facts About Control Valves
“Tips & Tricks” on Control Valves

EPC School 2012 Series

I for Instrumentation




Q: What is potential free contact? What is the significance and application of this contact?

Contacts having not potential. E.g. Relay contacts/ field switches contacts. They are used in logic circuits. A potential free contact is usually wired into an electrical circuit. However it must be ensured that the contact ratings are suitable for the service in which it is used.