HOW DPT WORKS?

6 Answers   Essar,

---

what is relation between electronics&instrumentation

4 Answers   Hindustan Zinc,

---

why can't we use 5-20mA standard or some other instead of 4- 20mA?

6 Answers   Emerson,

---

What is input and output of plc & dcs

2 Answers  

---

What is the use of double seated valve?

0 Answers  

---

what deference between panel earth and systemearth

0 Answers   Tecnimont,

---

what is the output of conductivity sensor and PH sensor?

3 Answers  

---

how to relay switch sense the fault?

0 Answers   ME,

---

what does ip65 signify??what is its NEMA equivalent???

1 Answers  

---

In split range control, we will control 2 outputs with time interval. Eg :(with 4-20 ma signal, for 4-12 ma we are operating one control instrument like valve & for 12-20ma we are operating other control instrumet (other valve). If we get a signal of 15ma to first instrument (Valve 1), what will happened to the first valve, and if we get signal above 20 ma to 2 valve what will happened ?

3 Answers  

---

Sir,I am going to sit for IOCL written test exam. recently.Can anyone tell me the name of 'Objective type Question Book on Instrumentation Engineering ' which will help me. Pl. mail to bidyut_71@rediffmail.com / bidyut.saha2008@indiatimes.com / bidyut.saha09@yahoo.in

0 Answers  

---

Why do we go for 4-20mA? why not other standara?

6 Answers  

---