Answer / vicoy

Wet Contact has line supply voltage either AC or DC
Dry Contact is open and closed continuity

Answer / saravanakumar

wet contact is a contact which is not potential free. But dry contact is a potential free contact and the contact rating can be either 24VDC, 230VAC or 110VAC.

what is difference b/w the solinoid volve and autodrain?

3 Answers  

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Why we used cage in control valve?

8 Answers  

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What is instrumentation measurement?

0 Answers  

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1)how we calculate the drum level? and how we select the transmitter range?

3 Answers  

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Thermocouple is a transducer but rtd is not transducer why? Both taking heat as a input and giving mv

7 Answers  

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hi friends,can u send me the link for downloading Allen_bradley_RsLogix_500_Pro_V_7.0 software with activation file.or how can i find activation file for this.

2 Answers  

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Emergency Shutdown Systems/ Plant Shutdown System.

0 Answers   CCIE,

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units of pressure,flow, level,temperature? principle of pressure gauge? calibration of pressure tx., level tx., temperature tx.flow tx.? description of two wire ,three wire and four wire R.T.D.? WHAT IS INPUT AND OUTPUT OF TX.? WHAT IS INPUT AND OUTPUT OF R.T.D. AND THERMOCOUPLE? WHAT IS HOT LOOP AND COLD LOOP? WHAT IS INPUT AND OUT PUT AND OUTPUT OF D.C.S. AND P.L.C.? PRINCIPLE AND WORKING OF HART? WHAT IS PNP AND NPN PROXY? CALIBRATION OF PRESSURE ,LEVEL ,FLOW SWITCH? DESCRIPTION OF FIELDBUS FOUNDATION? WORKING OF SOV.?

2 Answers  

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I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration  So is there any causes biside this or  any  permissives ?

0 Answers  

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I need the intools training institute address in india. Intools subject oriented local authors books.Refer me plz

3 Answers  

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Derive capacitance to 4-20ma conversion formula / relation in capacitance type pressure sensor?

0 Answers   ISRO,

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What are Sinking and Sourcing IO Cards

2 Answers  

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