difference between accuracy and precision

6 Answers   Honeywell, ONGC,

---

what is the use of shield cable?

2 Answers  

---

calibration of instruments.

11 Answers   ONGC,

---

what are the definitions of input, output, command & signal according to instruments controlled by PLC using DCS System?

0 Answers  

---

suppose there is gas flow meter I want to know weather meter calibration is done at high pressure or low pressure? pls justify.

2 Answers   Siemens,

---

---

When we will do simulation for I/P?IF WE DO SIMULATION through which way either series or parallel?

1 Answers   TVS,

---

what is the formula for changing Range of Transmitter from X mmwc to some Y mmwc with respect to DCS NCMH flow range from x NCMH to y NCMH?

1 Answers   HCL,

---

Could you explain to me the enraf (servo gauge) mechanism. How it works ? and how it is working on archimedes theory while it's not immersed into the surface? and how can we calibrate it ? Thanx

1 Answers  

---

what is interface level and how it is calibrate?

0 Answers  

---

On drum level, why we are using air to close Control valve?

4 Answers   L&T,

---

why we use only 4-20 ma signal as AI and not 0-20 ma?

2 Answers   Honeywell, Oil and Gas Jobs,

---

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

3 Answers  

---