Answer / vikram budhiraja

A process variable can be transmitted (as an analog signal) over a pair of wires either as a voltage or a current.

A current (milliamp) analog signal is preferred in control systems over voltage because the current in a loop cannot be different at the generating end and the receiving end regardless of the length of the wire carrying the signal.

On the other hand a voltage signal suffers a drop ( IR loss) depending on the length of the wires carrying the signal resulting in error.

what are the use of belew gear in general ??

0 Answers  

---

how u calculate ai/di/ao/do capacity in ur dcs?

1 Answers  

---

why we set -10 volt in vibration sensor output,why not +10 volt

3 Answers   Sabic, TVS,

---

Can anyone convert a 5/2 way or 3/2 way valve into an ISO valve?

0 Answers  

---

What is the difference between rich gas and lean gas?

3 Answers  

---

how to solve temperature error in compressor?

1 Answers  

---

Thermocouples work as follow:

1 Answers   Dashen Brewery, Tata Power,

---

how to measure draft pressure in transmitter pl. give its single line digram

0 Answers  

---

what is electric motorised valve working principle.

1 Answers  

---

how to measure flow with dp

1 Answers  

---

What is the formula of vabration sesore. i mean how to covert mils to volt plz share if any body knows   very argent : my mai is merajalam143545@yahoo.com

0 Answers   Samsung,

---

which type of signal used in instrument?

3 Answers   Emco, Makson, Sail, TATA,

---