Answer / nisahnth

pressure switch is like an electronic switch,when crosses
set point the switch will changes to NO to NC or vice versa
so out put is DI,

pressure transmitter monitoring the pressure it send the
analog signal to DCS

Answer / madhavan

Pressure switch output is interms of NO or NC.

Electronic pressure transmitter output is in 4-20 mA or VDC

Answer / senthil

The output of pressure switch is the contact changeover, i.e. from NO (normaly open) to NC (normally close) or vice versa, when the pressure setpoint is crossed in either way.
Whereas the output of Pressure transmitter is 4 to 20 mA or 1 to 5V as the case may be with the type of transmitter you are using.

Answer / ashraf

Pressure switch output is 0 or 1 .if switch is NO it means 0 if NC it means 1. And the tx output is 4 to 20mA.

Answer / ashraf

Pressure switch output is digital 0 or 1 .if switch is NO it means 0 if NC it means 1. And the tx output is 4 to 20mA.

why we are giving negative supply for vibration sensors?

3 Answers   Shell, Solex,

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I am applied 100 % pressure on to the air to open control valve,but the valve is not fully closed..and 10-15% is open the valve. how to calibrate the control valve?

3 Answers   OPaL,

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what is loop?

4 Answers  

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IS IT POSSIBLE TO CALIBRATE A LEVEL TRANSMITTER INDICATOR(ABB) USING HART COMMUNICATOR.? I MEAN TO CHANGE FROM ONE UNIT TO ANOTHER WITHIN INDICATOR (EG. INCH TO FEET)...? PLZ NOTE THAT I HAVE MADE THE UNIT CHANGE IN TRANSMITTER USING HART COMMUNICATOR..BUT WHAT ABOUT THE INDICATOR..?

2 Answers  

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what is the tempareture conpensation?what is the use of this?

1 Answers  

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why dead weight tester called dead weight tester.

5 Answers   QAFCO,

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Hi Friends , i need one urgent help , i am preparing for M.tech entrance examination , i need some obejective questions related to instrumentation field. where can i get those ? can anyone help me pls ?

0 Answers  

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how can we understand about dcs "bailey infi 90 dcs system" . how its work how signal come from field how it process and how o/p creative by controller. how its cards work.the bsic principle of working of dcs

1 Answers  

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What is minimum distance between three thermocouples (2oo3) mounted on same pipe line (20")? Technically accepted by stright line mounted or circler mounted?

1 Answers  

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You are looking at the RS-485-side of an RS-232/RS-485 converter and the power supply voltage for the converter is +5V. Under idle conditions (no transmission), and assuming you have enabled the RS-485 output: what would you expect at: (a) Output A measured against output B (b) Output A measured against ground (c) Output B measured against ground

1 Answers   EIT,

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What is difference between differential pressure & delta pressure?

0 Answers  

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What is the difference between intrinsic instruments and ATEX instruments?

1 Answers  

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