Answer / barok

AI- means input of 4-20mA comes from transmitter to DCS
AO- means output of 4-20mA comes from the controller on DCS
DI- means input of 0 and 1 comes from switch to DCS
DO- means output of 24VDC come from DCS going to solenoid.

Answer / mahmoud zaki

EX. DI like sensor.limit switch and bush bottom
DO like to run for example motor
for contactor or relay or solnid valve

AI like level transmitter or pressuer transmitter TC
AO like control valve

Answer / sudarshan sankapal

AI means field genarated signals comeing to Dcs or PLCs by the use of 24v DC suppy... ex sensors
AO means DCs or PLC genarated or field genarated signals going to control process parameters...ex control valves input 4 to 20ma
DI its logic signal 0 or 1 state came from electrical VFD drives or field...
DO its logic signal genarated in DCs to control feild process parameters..ex solenoid valves

Answer / mayursinh amw

A0 means analog voltmeter, supply come from AO cardto volt
meter

What are the different modes of a contollogix family processor? How they work?

3 Answers   Honeywell, Siemens,

---

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)

3 Answers  

---

What are the different types of temperature sensors and the principle they work on?

1 Answers   GAIL,

---

What is the deffernce bet. Instrumentation and Electrical Enginerring?

1 Answers  

---

Why Ma signal is using for control system?

1 Answers   Petrofac,

---

---

how to rectify the problem ,if we erected the DPT instrument wrongly of hp on lp side and lp on hp side?

5 Answers  

---

testing of thermo-couple?

3 Answers  

---

applications of plc in printing and packaging?

0 Answers  

---

In s7-200 we use HMI TD-200C , what that C stands for........ plz reply

2 Answers  

---

How to do calibration of magnetic flowmeter

1 Answers   Kharafi National,

---

what is the use of impulse line in AFBC boiler , WHY WE CONNECT IMPULSE LINE TO TRANSMITTER , DRFT GAUGE ETC ????????

6 Answers   Jindal, Reliance,

---

wat are the interview questions asked in air india for post service engineer

1 Answers   AirIndia, Shree Renuka Sugars,

---