Answer / ishtiyaqp

This number 100,500,1000 refers to the reference resistance of the Rtd.meaning pt 100 means at 0 degree temp it gives 100 ohm resistance ,similarly pt 500 gives, 500 ohm resistance at 0 degree.but not questions arrise why we go for higher resistance and the ans is simple for good sensitivity and accuracy.

Answer / jaimin

At 0 degree temperature rtd resistance is 100,500,1000.so its name change per their zero degree resistance.

Answer / mohamedhega

This number 100,500,1000 refers to the reference resistance of the Rtd.
As temperature changes ,its resistance changes and temperature is function of this change.

what is seebeck effect?

7 Answers  

---

how to overhaul control valves.what are the proper procedures.

1 Answers   Jindal, QAFCO,

---

What is pressure,What is temperature,What is flow,What is level

4 Answers   Keltech, Petrofac,

---

What is the reason PT speed not incresed in gas turbine?

0 Answers   ROC,

---

How digital input and digital output 's are working in dcs

0 Answers   BBV, Indiabulls,

---

---

What is three element in drum level?

0 Answers  

---

What is mean by AC voltage and DC voltage

2 Answers  

---

CAN WE CALIBRATE LEVEL TRANSMITTER USING HART COMMUNICATOR WHEN WATER LEVEL IS PRESENT IN THE BOILER SHELL?

4 Answers   Chemin, Emerson,

---

IS THEIR ANY AGEING EFFECT ON FLOW NOZZLE, ORIFICE, MANIFOLD, OR TRANSMITTER ?

1 Answers  

---

if the t/c o/p is 4-20mv then how plc recognize it because we are dealing with the 4-20ma in the plc ????????????????

7 Answers  

---

What are the disadvantages of Human-Machine Interface (HMI)? atleast 3.

1 Answers  

---

what is difference between RTD and Thermocouple?

2 Answers  

---