Answer Posted / all

3 wire rtd sensor have a 1 postive(red) and 2
negative(white).whenever 3 wire rtd used for long distance
that means 10 meter wire..that time wire resistance also
increased.(r=pl/a).in 4 wire rtd sensor have a 2
postive(red) and 2 negative(white).4 wire rtd used for long
distance that time the red and red wire have short.so the
resistance variation is equal.

few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters

2025

---

which type inter lock use in petrochemical refinery,and oil & gas?

3023

---

what is the vital subject for scoring bhel exam&what is the question pattern

2396

---

what is KV and XV valve

1791

---

What are the different types of thermistors used in industries? How to the operation of typical thermistor?

1956

---

how many type of plug are used in pneumatic control valve,name them.

5424

---

what is function of sensor, and how is it work , explain with difination

2376

---

what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.

2765

---

i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com

3164

---

what is interface level and how it is calibrate?

2387

---

Draw a simple circuit for a well head control panel used to protect the well against fire, leak, blockage, ESD, & controls the operation of one downhole & one surface safety valve. Explain the operation and controls

1633

---

what is interface level measurement.who can calibrate interface level measurement transmitter online

2508

---

State some of balance principle’ advantages?

1172

---

why any measurement made interms of pressure is more accurate ? to be more precise most of the flow velocity is made interms of pressure and it is accurate. what is the reason behind pressure measurement being accurate ?

1899

---

What is the procedure of calibration of Load cell?

1916

---