Answer / nagkon

for ex: the range is -760 to 0mmhg .
by following procedure we can calibrate the transmitter by
using hart
1.give the supply to transmitter
2: connect hart to transmitter with 250ohms series resistor
3.switch on the supply
4. hart shows device connected
5. go to process parameter and change the follwing
parameters
LRV:760mmhg
URV:0mmhg
then press send .then cross check the transmitter with
master pressure calibrator

Answer / senthilkumar

for ex: the range is -760 to 0mmhg .
by following procedure we can calibrate the transmitter by
using hart
1.give the supply to transmitter
2: connect hart to transmitter with 250ohms series resistor
3.switch on the supply
4. hart shows device connected
5. LRV= (-)760 mmHG URV= 0 mmHG
6. apply pressure 760 mmHG to low pressure side and see the
output it will show 20mA.

Answer / ghandhi

it will show 20 ma when no pressure applied

if found error in magnetic flow meter?how can we adjust?

2 Answers   ANI Instruments, Techint,

---

Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com

0 Answers  

---

1.what is the role of proportional comtroller in pid controller?2.How do u calibrate the control valve?

3 Answers   Bently, IOCL,

---

Control valve question what is the meaning of cauge.?what is the use of cauge?

1 Answers  

---

Where is the flow transmitter installed with respect to control valve, state reason.

1 Answers   ADMA OPCO,

---

---

What are the key components of control loop?

1 Answers  

---

What is the difference between HMI and SCADA and MMI

4 Answers  

---

what is input and output cards of plc needs to be hot swappable mean

1 Answers  

---

any body please send me the old question papers of ongc test.

0 Answers   NTPC,

---

i have D.p. transmitter of range 0 to 2540 mmWC, i want to use this for flow measurement (0 to 500 ltr/hr.) what should i do?

9 Answers  

---

How can I zero check of wet leg type DP Tx ?

6 Answers   ONGC,

---

What is zone,loop/fire alarm system?

0 Answers   Emco,

---