So I'm a first year apprentice and I'm having a tough time with knowing the difference between AI, AO, DI, DO. I'm having a hard time understanding what devices are which and why. Can someone explain this to me?
Answers were Sorted based on User's Feedback
Answer / varatha
transmitters analog input,
control valve analog output,
Limit switches digital input, like motor on
command digital output.
|Is This Answer Correct ?||2 Yes||0 No|
Answer / king khan
|Is This Answer Correct ?||1 Yes||0 No|
why we are using analytical instrument in plant ?
Why we use DPT? can we use PT instead of DPT?
differentiate different units of pressure like US & UK standards
how commission a transmitter evev plant is already running
I have transmitter of range -20 to -5 kpa.if it is possible to zero trim with atmospheric pressure,means HP and lp having no pressure...what will get after zero trim and it is the right way.....plz give me reply ....
HOW WE MEASURE A DRUM LEVEL BY DP TRANSMITTER ? WHAT IS ITS FORMULA ?
An engineering term STALL used in compressor operation what it means?
how to check earthing,what is minum ohms for proper earthing
if conical type tank in top LEFT side solid material coming but LT MOUNTED IN TOP OF LEFT SIDE, how to measure ultrasonic level transmitter ?
How to calibrate vertex flow meter? How to calibrate mass flow meter?
Convert a pressure, level, flow, or temperature process variable value into the appropriate pneumatic or electrical value given different types of instruments.
What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?