What is the definition of direct acting valve & reverse acting valve

2 Answers  

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What is the difference between HMI and MMI?

16 Answers  

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how to turbine speed measurement?

0 Answers   Jindal Steel and Power,

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why is not useing in boiler skin thermocople

1 Answers   KNPC,

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i want know about capillary type LT transmitter installation. we can install any location in between to HP and LP leg?

2 Answers  

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Is an analogue only transmitter as accurate as a smart transmitter?

2 Answers   SCA,

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why the discharge pressure of ID fan showing negative at fan running condition.(boiler operating condition.)

5 Answers  

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how to calculate range of Dp transmitter

1 Answers  

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In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.

0 Answers  

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If a control valve is hunting means means if we are giving 50% to the cv, the cv will open at 51% then slowly slwoly it will reaches 49% , then it will reaches again 50%, this type of action occured frequntly.. so what to do for solve this problem. The possible cause is in volume booster or positioner's relay.. positioner is double acting .. and make siemens..sipart.The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

2 Answers   Gujarat Fluorochemicals Limited (GFL), Shell,

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what is an ambient temperature?

5 Answers   Reliance,

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please explain smoke detectore & lel detector?what is o/p

1 Answers  

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