Answer / ayaz

analog input/output is continuously  vary signal for example process variable continuously change so transmitter output continuously chnage 
and digital input/output is only zero or one ( o mean off condition and 1 mean on condition ) digital use only on off devices 

Answer / ayaz

dear all I am currently working with omv pakistan i want a job in instrument tech please help him 

Give 2 application of quartz crystal used for process parameter measurement.

1 Answers   ADMA OPCO,

---

What is modbus?

0 Answers  

---

I have completed B.E. Instrumentation & control in 2009. i have 3 year industrial job experience in chemical plant.now, I want to join M.E. in external. so, Plese say easiet way and good institute name.

0 Answers  

---

What is T4 temperature in compressor?

1 Answers  

---

What is the diffrence between ff tx and non ff tx

0 Answers   Jindal, Rosemount,

---

Why the Proximitor supply should be Negative voltage? Why should not we give Positive voltage to the Transducer?

6 Answers   Moser Baer,

---

hello this is dhinakar subramanian. how to piping and instrumenation drawings and also how to create the data sheets...

1 Answers  

---

what is puling in n pulling out in flame scanner system?

1 Answers  

---

explane hart protocol? what is its advantages.

3 Answers   Jindal,

---

principle of dead weight tester ?

0 Answers  

---

Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 Answers  

---

What is purpose of shield wire?

1 Answers   IFFCO,

---