what is the difference between 2 wire and 3 wire RTD- application wise,cost effectivity?2 5993
what is the difference between sinking and sourcing inputs and also what are there applications?2 5414
difference b\w a transducer and a sensor4 5159
Please send the all question with answer related for interview.1 1885
What pressure results for a flow transmitter of range 0- 180t/h in the dcs and 0-301mbar in the field using square root extraction. Kindly also suggest formulae for the percentages 0,25,50,75,100?1134
what is Green field /brown field exposure in chemicals /oil /petrochemicals /refineries /paints /speciality chemicals /gas /FMCG /glass industry1 2018
on interface level transmitter model(RTG3302-EMERSON) What is threshold valve how can we select correct threshold value T1,T2,T3,T4 When interface water & hydro carbon1271
i have 20 kw motor & my vfd drive capcity is 18 kw if possible to use 20kw motor on this vfd?4 7224
Tell me the field calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter.2279
Tell me the field calibration procedure step by step with diagram of temperature transmitter, temperature indicator, flow indicator, level indicator, control valve, thermocouple, pressure indicator (digital & analogue).1 7545
Calibration of controller (pneumatic)
send me HPCL paper
WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN
sir,would you please send me the Hindustan petroleum corporation limited papers(HPCL).my e-mail ID is firstname.lastname@example.org
HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.
How can we use feedback signal frm rtd for monitoring and in dcs for controlling ,then which type of rtd is sutaible 2 , 3,4wire and why ?
what is isloted barrier how it works and what are the main purpose.how it make safe area.
anybody having Qatar Petroleum questions for instrument Technician offshore ....please send me
what is the difference between magnetic flow meter and mass flowmeter
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
for oil & gas industries which zone is normally preferred? why? give its example?
draw shematic diagram of c/v positioner(smart type)?
how many type of plug are used in pneumatic control valve,name them.
how we are selecting instuments by differentiating certain instruments in 4 to 20 ma range and certain in 1 to 5 v dc
What is compensation for flow ? Why we use compensation ? What are the factors of different compensation ? We not use then what problems may happen ?