Answer / krishna

The transmitter normaly Gives 4-20 mA out put current. SO
when you use 250 Ohms resistance it will
produce: .004X250=1.0 Volt to .020X250 = 5olt out put
signal interms of voltage (accross the resistance),

Similarly, the 500 ohms will give an output voltage of 2 to
10 volt accross the resistance.

Answer / ayaz

250 ohm resistance use only in smart loop use only for hart communication and not use for other purpose
any device is not smart then we do not use  250 ohm  why so the 250 ohm use only for hart protocol

what is basic difference between motion balance and force balance in pneumatic instrument?

0 Answers   Sterlite, TCL,

---

any thing about plcs?

4 Answers  

---

What are the Components of Siemens S7 300 Series PLC system ?

1 Answers   Siemens,

---

what is the meaning of reverse action and forward action of control valve...

9 Answers   Honeywell, Yokogawa,

---

What is the purpose of bypass valve across AS valve.

0 Answers   ADMA OPCO,

---

Could anybody pls give ans of boiler 3 element control system?

5 Answers   Qatar Petroleums,

---

What is Fieldbus?

3 Answers   NSL,

---

how in the 2 - wire transmitter, 24v supply and the 4ma signal gets in the same path?

1 Answers   Yokogawa,

---

why we are using magnet for calibration of gas detector?

0 Answers   NSH,

---

what is the meaning of GK value(fullform) in flowmeter ?

3 Answers   Essar,

---

can we use flow transmitter instead of level transmitter?

7 Answers  

---

What is the use of temperature compensation?

0 Answers  

---