Answer Posted / rajubisen1984

i read all answer of all abobe. max of u r correct for 0-20
mA but why not 3-15 mA
this is only bcoz max. of currenr transducer have the max
linearity in the range of 4-20.
again question raise that why higher limit is 20 mA
this is done because we need a large span range for good
analysis and 21.4 mA is the max. range of linearity in the
same way in lower side min range is 2.8 mA so its better to
use 4-20 mA

please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

2253

---

Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?

1529

---

how do u calibrate the vacuum transmitter if it shows more reading

2057

---

How do bending tubing provide better measurement than using tubing fittings such as elbows?

1944

---

any questions on motor and energy conversions machines?

2236

---

kindly sent some demo question and answer

2075

---

what does it mean an active front end in vfd plz explain it briefly

1891

---

How can measure flow in oil line?which type of transmitter is generally used?

4220

---

What is the use of temperature compensation?

2016

---

To become an Instrument DESIGN engineer, is there any softwares or training to become Instrument Design engineer, plz suggest me, Iam very much interested in designing.

3475

---

What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...

2095

---

Differentiate between ultrasonic flowmeter and radar type flow meter

1224

---

why I need valve guard and whats different between guard and positioner ??

1402

---

What are the error values can accepted in flow transmitter calibration?could u give any formula for this?

1918

---

HOW TO CHOOSE FREAQUENCY IN FMCW TYPE RADAR INSTRUMENTS. DESIGN BASIS OR DESIGN CALCULATONS ?

2185

---