Answer / narayan

Check Tx data sheet or engraved plate on the tx and it gives span limit as 2000mm, then we can change
if it is below 2000 mm, we can not change, or calibrate
it is sensor range

Answer / mudassir

yaa you can but you have check the model no. if it is30512G
THEN YOU CAN CALIBRATE IT upto6000mmwc

Answer / saumil

We connect 375hart protocol and given this new range and calibrate 20 mA at 2000mmwc

Answer / ramana

If the Tx. Range is 2000 mmWC we can change it. But we need
little calculation. There is one formula

square root of(P1/P2)= Q1/Q2

Where P1= Pressure 1
P2= Pressure 2
Q1= Flow at Pressure 1
Q2= Flow at Pressure 2

how can we calibate ph meter. how can we calibrat conductivimeter how can we calibrat massflowmeter & it s working.

1 Answers  

---

how to calibrate an error for pressure transmitter, make it easy to understand

2 Answers   Descon,

---

In thermocouple could we use the lug for termination or not,Thermocouple is any time,I am currently concerned with K type.please let me know if anybody know

4 Answers   Saudi Aramco Shell Refinery Company SASREF,

---

modbus and profibus communication difference?

1 Answers  

---

Why we are using DPT(Differential Pressure Transmitter) in separator instead of level trasmitter?

0 Answers  

---

---

can you give some devices that measure directly the mass flow rate.

1 Answers   Takreer,

---

give me all the details about the interview and which type of question being asked

0 Answers   Jindal,

---

in the pipe line if the control valve fails to respond to controller action,by what means we can stop the flow in the pipe line ?

9 Answers  

---

A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.

0 Answers   MNC,

---

How to carry out hot loop checking of closed loop pf temperature control valve & temperature transmitter?

2 Answers  

---

what happens when the profibus fails while in operation (operation of a valve)?

5 Answers   L&T,

---

what is mean by hot loop and cold loop testing, whts different between both

2 Answers   Honeywell, PDO,

---