Answer / janes

4-20mA Active : 2 wire device. same pair of wire is used
for the Power supply and Output 4-20 mA Signal.
4-20mA Pasive : 4 wire Device. Device having external power
supply -110 Vac / 230 Vac / 24 Vdc and generate the 4-20mA.

Which boiler is use in power plant

1 Answers   Jindal,

---

In which principles tx ,pressure gauge,Temp gauge,control valve works?

0 Answers   Bajaj, Professional Instruments,

---

WHAT IS TSI? HOW ITS WORK

2 Answers  

---

Why 1-5 vdc a standard?

1 Answers   Process Control Technologies,

---

HOW TO CONVERT 0-60KG/CM2 PRESSURE TRANSMITTER TO A LEVEL TRANSMITTER? CAN WE ABLE TO DO IT? IF YES HOW TO DO IT BY USING HART?

3 Answers  

---

What is three element drum level control system why its better than single element?

0 Answers  

---

what is the difference between plc and pc?

5 Answers   ADI, NFCL, Wipro,

---

What are SMART insuments?

5 Answers  

---

If The RTD(PT100) Show .776 Kohm Resistance the Temperature of process fluid how much?

3 Answers  

---

Explain about relays.. Can we give both AC and DC to the same relay... How it is energising.. Explain its working..

7 Answers   IOCL,

---

What is the procedure of changing a Faulty Module of Allen Bradley PlC without stopping the Process

1 Answers   Siemens,

---

What is super thermocoupal?

0 Answers   Emco,

---