Answer / smita

RS232 is a full duplex cable means both transmitting and receiving happens at a time due to this noise will be more so that we can't go for longer distance

RS484 a half duplex cable means in a single time either transmitting or receiving will happen so we can go for a longer distance without disturbance

please can anyone tell me in detail, what's mean by open loop and close loop?

6 Answers  

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if found error in magnetic flow meter?how can we adjust?

2 Answers   ANI Instruments, Techint,

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hi... i'm about to learn siemens plc i came across following question in my mind ... plr ans 1. hw motor operated by plc 2. hw drive operated by plc explain dis by both ladder logic diagram and hardware config , connection

2 Answers   KCP Cements,

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what is meant by Hydroelectric powerplant?

0 Answers  

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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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what is diff between sensors and transducers.explain with ex?

15 Answers  

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what is the difference between cold loop and hot loop

2 Answers  

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What is the difference between compensation and extension cable.

11 Answers   HPCL,

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To calculate temperature, why we multiply 25 with mV?

2 Answers  

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pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.

3 Answers  

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What is calibration?

6 Answers   Syscon,

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What is re-latch the manual trigger in solenoid valve

0 Answers   Valvitalia Systems Division,

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