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 4mA-20mA current loop selected as standard ???

1 Answers   IMCO, Reliance,

our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS

0 Answers  

How to convert ma to mv? Resistance 250 ohm is connected in series or Parallel?

3 Answers   ISRO,

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  

What is the GK Value in Flowmeter?

0 Answers   IBPIL, Thermax,

What is the Difference between CNC and PLC

1 Answers  

In dissolution apparatus how did you calibrate the distance from end of paddle to bottom of the bowl?

1 Answers   Reddy Labs,

What is the use of GMV in turbine?

0 Answers   Hamsco, Maruti Suzuki,

What is controller? What is transmitter?

1 Answers  

hello dear i have faced problem in drum level transmitter. the problem is when i engrize the meter meter shows 100% but the actual level 40 or something plz suggest me

7 Answers  

To become an Instrument DESIGN engineer, is there any softwares or training to become Instrument Design engineer, plz suggest me, Iam very much interested in designing.

0 Answers  

how to measure the output of RTD given the general formula of  rtd.  

2 Answers