Answer Posted / yadav manoj

Thermocouple is basically couple of two dissimilar matel
wire which generate certain emf on puting the couple end in
higher temperature source.As emf is generated then it can
measure in terms of mV.Phisically we can check the T/c by
checking it two wires, they will be of different
material/metal alloy.

RTD is resistance temperature detector works on the basis
of resistance changes when temperature changes. Physically
they can be identified by wire exposed to make
connection.In normally everyone uses three wire RTD, in
which 2 wires are of same insulation colour and resistance
between them will be nearly 2-3 Ohms. The resistance b/w
third wire and any of those wire will be 119.5 Ohms at room
temperature.RTD never generate emf hence we can't measure
any mV b/w any of wire of RTD.

what does the ratio 800-400-300-200/1-1-1-1-1 in the specification of current transformer indicates?

2470

---

What is the purpose of LO Overhead tank in turbines.

1949

---

In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

1772

---

What is the principle of capacitance type level transmitter?

1016

---

model question paper of instrumentation for Jindal GET 2010.plz reply sudhanshukumar08@yahoo.com

2277

---

what is the difference between attemperator and desuperheater ?

5517

---

how to check earthing,what is minum ohms for proper earthing

1878

---

How d.p. Transmitter can be applied to close tank?

966

---

what is output of FOUNDATION FIELD BUS transmitter

2106

---

Explain pH, Conductivity.

2077

---

What is the constant voltage unit?

1012

---

What is difference between differential pressure & delta pressure?

1029

---

If P will increase then what will happen with PID?

5975

---

What are the interlocks we have to check during the start up of LP/HP compressor?

1931

---

What is modbus?

1129

---