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PRT140 - HW #2

Questions from Homework #2

QuestionAnswer
What type of drawings contain the most detail, to include instrumentation and the entire primary control system? P&ID
What is the range & units used in Pneumatic Control Signals? 3 to 15 PSI
What is the range & units used in Voltage Control Signals? 1.000 to 5.000 VDC
What is the range & units used Amperage Control Signals? 4.00 to 20.00 mA
Instrumentation commonly use a _____ to represent the physical device Circle or balloon
What is an instrument powered by air or other gases? Pneumatic
What is an instrument located near the process? Local
What is an instrument located away from the process? Remote
What is an instrument powered by electricity? Electronic
To how many decimal places are Voltage Control Signals accurate? 3 decimal places
To how many decimal places are Amperage Control signals accurate? 2 decimal places
Why are Voltage Control Signals usually co-located near the process? Signals lose voltage over distance due to resistance
If an electrical transmission signal is listed on a P&ID, will it be Voltage or Amperage? Amperage
Created by: 1873918659595405