How to connect field devices to PLC and DCS using a FIELD
BUS, DP,MOD BUS(please tell me any extra interfce or
adopters need in this case if we use remote i/o s)
Answer Posted / satish awate
PLC is programmable logic control in this field instrument are connected to input or output of PLC input & output. And PLC are connected to DCS system or SCADA or HMI by a RS232 or RS434 communication cable.
| Is This Answer Correct ? | 16 Yes | 7 No |
Post New Answer View All Answers
Explain working principle of lvdt?
Tell about your IFFCO plant visit.
Displace type LT to be calibrated in workshop, wt. 40, dia- 60 mm, density- 0.8kg/cm3.
why Fahrenheit unit of moistur analyzer transmitter
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.
when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??
What is limitation of the ht.of the displacer of a level trol?
What are the types of control valves available
What are the different types of thermistors used in industries? How to the operation of typical thermistor?
what is the procedure for auto tune in masoneialn 12300 series displacer type transmitter?
Where are oxygen analysers installed in cfbc boilers? What are their usual readings?
Define cryogenic?
What is frequency factor in massflow meter? When using frequency output?
why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V
Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72