Answer Posted / rajeev

4-20ma is bcoz in older transmiter ckt 3ma is use for it self to ckt operation & 20ma is for saftey purpose bcoz 30ma is dangerous for life.

What is the use of each wire in three wire RTD

2455

---

What are the type of bonnets in the control valves?

1810

---

how pressure transmitter work, what is its principal to measure and how its generate signal. for pressure transmitterinstallation which precautions must be taken ??

1697

---

I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.

1937

---

dear friends, i have seen flow as the selection critriea in presure guage (bourdon tube) and i would like to know what is the relation between flow and performance of pressure guage other parameters i found in the data sheet are pressure max. 1ksc temperature max. - 50 deg c line size - 80NB operating range - 1ksc pr. guage range - 0-2 ksc thank u,

2127

---

sir,would you please send me the Hindustan petroleum corporation limited papers(HPCL).my e-mail ID is ujjwal_sharma1983@yahoo.com

2289

---

How many ohms are required for proper earthing?

1043

---

need instrumentation job completed 1 year trainee ship in mnc pesticide company. now in search of job

1844

---

Draw block digram for well head from well to shipping pump?

2113

---

what is the importance of CV in the control valves? how it is calculated?

2389

---

How to fix back the valve actuator stem

1992

---

How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.

2087

---

Why not come out analog output in ABB EL3020 when display show correct value

1837

---

this site is owned by an nonsense

2251

---

What is force balance principle?

1120

---