What do you do as a Engineering person EPC for
Sizing&Selecting Control Valve?
Prepare AVL (Approved vendor list)
You need provide basic design data which includes but not limited to Temp., Pressure, Min., Max and no0rmal operating flow. Other requirement viz., Hand-wheel requirement, Max. opening time, limit switches SOV, available air pressure @ site, Noise requirement (< 85 dB) leakage class, You need spring return actuator or double acting ? what is the service (corrosive, Slurry, Liquid, Gas ) positioner requirement , booster etc. etc. and primary calculated CV.
Perform offer / bid evaluation.
Vendor meeting if required.
Provide inspection schedule , Delivery schedule. Preform factory inspection and sometimes site installation (based on company requirement) and inspection.
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Explain bernoulli’s theorem. State its application.
how to set calibration range in a DP transmitter to measure level for a closed tank and for an open tank,and also please explain me how to set calibration range for a DP flow transmitter in a line ?
How many loops are there in the power plant? how many closed & open loop in the power plant ? Please give me the exact clarification?
Why flow/pressure transmitter before control valve?
why we set -10 volt in vibration sensor output,why not +10 volt
what is the differnce between PLC & DCS
Please asked me How calculate DCS controller memory.
what deference between panel earth and systemearth
if i change range of flow transmitter in th field then does it need to change range in dcs?
what is the difference between CPC and i/p converter
How LVDT position transmitter works on DC supply(24vdc) from DCS, whereas transformer operates on AC supply? pls help..
What is PID tunning