Why DP transmitters are subjected to high static pressure test of 100 bar. Though they will be used for very small pressure range

4 Answers   HPCL,

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What are different types of control valves?

0 Answers  

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Why Flow measurement has to use Square Root

5 Answers   Hindalco, Petronas,

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Where & Why we are using SURGE PROTECTION ?

4 Answers   IOCL,

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In dcs panel we are using diff type of modules ?what is module ? what is the use of modules ?diff type of module?

0 Answers  

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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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Consider a control valve action,the inlet air pressure is only 6 ksc but physically how it can be operate against 100 ksc line fluid pressure?

2 Answers   SCS,

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What should be the main consideration while starting the Rotating compressor when we dont know the cut in and the cut off pressure setting of the pressure switch

0 Answers  

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What is passive connection of instrument in different types of IO module?

2 Answers  

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calibration of instruments.

11 Answers   ONGC,

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in a power plant which system are compensated?

2 Answers  

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Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure

0 Answers  

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