when we are using HART COMMUNICATOR why we are using 250 ohm resistance while using HART COMMUNICATOR.

7 Answers  

---

can any one explain in which term we are flow flow is it volumetric r is it mass? and y

0 Answers  

---

what is function of vibration, and how is it work, explain with difination

1 Answers   Bapco Bahrain Petroleum Company,

---

What is difference between scada and virtual instrumentation?

1 Answers  

---

please suggest me, how can i change the display setting in term of unit in place of % of Honeywell pressure transmitter ST3000S100?

2 Answers  

---

State four different types of flow measurement.

4 Answers   ADMA OPCO,

---

why we are using digital signals for I/O & how to measure this signals is getting or not ?

0 Answers  

---

how to calibrate ph meter?

3 Answers  

---

In most process, speed of motor controlled by control system with a reference pot . Now if i start & it becomes uncontrollable, i.e.gets directly start & stop after certain time.Then which reasons can make such problem? can motor may be faulty?how?

3 Answers   Siemens,

---

Consider a level troll. i am getting a correct value in 4mA and 20mA. the value in the middle(30 to 60%)is disturbed and i am not getting the appropriate value. what is the solution to normalize the level and to get the correct value..

2 Answers   KNPC,

---

What should be the main consideration while starting the Rotating compressor when we dont know the cut in and the cut off pressure setting of the pressure switch

0 Answers  

---

Draw a great bridge circuit.

0 Answers   CCIE,

---