what is the meaning of reverse action and forward action of
control valve...
Answer Posted / j arumugam
if control variable(CV) INCREASES process variable
INCREASES is called Direct acting (Gain < 0)
if control variable(CV) INCREASES process variable
DECREASES is called Reverse acting (Gain > 0)
Is This Answer Correct ? | 3 Yes | 2 No |
Post New Answer View All Answers
what is diffrance between FF & SMART, explain with difination
our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS
What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?
Q-Explain the different load conditions that will produced different offset which may or may not be acceptable to thhe control function
Can Any body tell me about the Contact or Email id of any good Consultancy which help me to find a job in Instrumentation Field in India .I have Six years of Work Experience in the Same field.Please revert me back on shammi_gwalior@yahoo.com ?
Boolean algebra
Explain the combusion chamber
WHAT IS THE CAM POSITION IN CONTROL VALVE POSITIONER ? WHY IT IS USED?
What is the constant voltage unit?
I have a Control VAlve having size of 2 ".Only the known parameter is Pressure drop . Its 2 Kg. Then How to calculate control valve sizing means Cv.
what is the reason while warning lamp is on while the engine is cranking?
i have done DAE in Instrumentation and Process Control. i have applied for an apprentice training in chemical company after three day my interview will be conduct but i need more information about industrial process control and controller. my e mail is imran_dilsetu@yahoo.com please tell me interview question relative to instrumentation ?
How is automatic reference junction compensation carried out in temperature recorders?
Can u tell me the principle of the tc,rtd,level switch,pressure switch ,transmitter(pr flow level temp.),vibration...plz
what is function of SCADA , and how is it work, explain with difination