What are difference between automatic and manual control system?

5 Answers  

---

how can be connected thermocouple in series?what is the need?

2 Answers   Hindalco,

---

What is difference between magnetic flow transmitter & Electromagnetic flow transmitter?

1 Answers  

---

What is the meaning of Feedback? How many types it is? Explain it?

2 Answers   Bharathi Cement,

---

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

1 Answers   IMCO, Reliance,

---

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

3 Answers   Sabic, TVS,

---

Can anybody explain about wellhead control system.

1 Answers  

---

what is sequence table in DCS . make a logic in sequence table for tripping of ID fan in Boiler(in YOKOGAWA CS 3000 DCS).

1 Answers   Yokogawa,

---

Why the industry's standard current standards are from 4mA to 20mA,not from 0mA or any other range?

3 Answers  

---

I want to measure level under vaccum by using DP Tx and vaccum vary between -500 to -670 mmHg and process fluid is accetic anhydride if consider process fluid density 1 kg/cm2. how to calibrate Tx ? consider level is 0 to 100 Cm.

1 Answers   CCC,

---

What are the application of bernoulli’s theorem?

0 Answers  

---

what is proportional & what is proportional band

1 Answers   Nimir,

---