What information needs for Control Valve "sizing"

1 Answers   Qatar Petroleums,

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one rtd sensor which is connected at middle of distillation column where actual temp. is 100deg but when we tight this sensor at thermowell end it goes down to 90 deg & when remove from the thermowell(but sensor end dipped in well) showing actual reading, what is reason?

3 Answers  

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line up procedure for dp type flow transmitter?

0 Answers  

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What is negative range in transmeter?

1 Answers   TCL,

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how many maximum enter 2mm Dia solid cylindrical pipe into 8mm Dia hollow cylindrical pipe. give answer with calculation.

0 Answers  

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What is the use of each wire in three wire RTD

0 Answers   GSPC,

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A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg. This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor. And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM. The question is : If the motor speed is +5,500 (RPM), what will be the temperature? (-sign indicates that the motion is in reverse direction).

9 Answers  

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There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?

0 Answers  

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why we are using digital signals for I/O & how to measure this signals is getting or not ?

0 Answers  

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0 Answers  

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please explain about actuator action? direct action & return action ?

1 Answers  

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what is diffrance between FF & SMART, explain with difination

0 Answers   Bapco Bahrain Petroleum Company,

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