What are the processes Variables?

4 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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what is the formula for calculating milliampere at different pressure points for eg 4-20 ma = 3-15 psi but if i have to check the ma at 4.6 ma?

4 Answers  

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if i want buy a pressure gauge then witch parameter i look

2 Answers  

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Distributed control system

1 Answers   CCIE,

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if RTD damage in plant, how we know?

5 Answers   Reliance,

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Where is wet leg is used?

0 Answers  

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What is the use of GMV in turbine?

0 Answers   Hamsco, Maruti Suzuki,

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What is cavitation. what is the effect of it on control valve and how is it prevented.

1 Answers   ADMA OPCO,

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How to connect another 24 volt dc power supply in circuit when previous power supply has become weak.what is the connection?

2 Answers   Bhole Baba Dairy Industries,

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What is the diffirence between Earth and Neutral and What is the required normal voltage between earth and neutral

6 Answers  

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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 carbon

0 Answers  

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