Answer Posted / rakesh barot
control valve opens or closes fully or partially by
receiving the signal from controller that compare set
point to process variable whose value is provided by the
sensors
| Is This Answer Correct ? | 44 Yes | 8 No |
Post New Answer View All Answers
Calibration of controller (pneumatic)
What is the use of control cable?
how can leve transmetter calibate in feild .and also put cv and flow plz .....
What is three element drum level control system why its better than single element?
How to work togather like sov,limit switch,proxy switch and booster in xv
What is ultrasonic flowmeter?
what is performance test.need defination
Can Any body tell me how to check Modbus Settings in ER300N L&T trivector meter?
Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72
what should he know if he is an assitent engineer instrumentation in cement industries of experience of 10 - 15 year.
What is zone,loop/fire alarm system?
We are using Rosemount 5400 series Radar Level Transmitters in all types of Sump Applications having oily water hdrocarbon petrochemical nature. What we are facing the problem frequently is that always getting reading frezzed at some value. If we do power recycling , sometimes it is working . then making same freezing problem. If anybody faced before such type of problem and also having solution , Please give the answer.
please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com
what is vibration a part of proceess variable? if vibration is a part variables then how we minimize the actual vibration on machine on load,? vision of instrumentation contrl plz ans me IPGDL interview question
CONTROL VALVE OPERATING IN MANUAL BUT NOT IN MANUAL. WHAT SHOULD BE THE PROBLEM ?