Answer / nitish katoch

no we can we can only calibrate measuring devices..its
calibration is only depend upon its design

Answer / velu

Actuator can be calibrated. for example Pneumatic Actuators
are used in control valves. we have to calibrate the
Actuator as per name plate depend on the actuator size and capacity(call us bench set) for proper opening
and closure of the valve.

Answer / vinoth.s

Actuator can be calibrated. for example Pneumatic Actuators
are used in control valves. we have to calibrate the
Actuator between 3-15psi pressure range, for proper opening
and closure of the valve.
there is nothing saying whether field
devices alone can be calibrated. All process control as well
as sensing devices should be calibrated periodically.

Answer / rezvanian

You cant calibrate an actuator, you can just do setting.(
setting means better performance and more accurate ).
But calibration is the process of measuring the actual
performance of an instrument-under-test using lab
instruments ( or we can do this in the field ) that in
turn have significantly better performance than the
instrument-under-test. The measured performance is then
compared to published data sheet specifications. If observe
the instrument to be out-of-specification, instrument must
adjust and re-test .( for example we can do calibration for
a thermocouple or pressure transmitter )

Answer / rcsp2689

Inprocess loop measuring Ends can be calibrated . ie., Sensors.. Where else Actuators are Final contol element / Output devices.

send me last 5 years questions asked in rrb chennai, for section engineer

0 Answers   RRB,

---

selection of the zener barrier for the hazardeous area zone 0

0 Answers   Siemens,

---

Why Flow measurement has to use Square Root

5 Answers   Hindalco, Petronas,

---

how to check thermocouple ,its working or not?

14 Answers   Coca Cola, Ford, Honeywell,

---

temptrure me ketne frequiency hote hai

0 Answers   ME,

---

---

I want measure the volumetric flow of gas in waste heat recovery Boiler?Tell me how and which type of instruments required. Plz mail me:naba02222@gmail.com Sam please post the answer .

0 Answers  

---

what are the steps I have to deal with?

0 Answers   ONGC,

---

What is CNC

1 Answers  

---

what is the procedure for auto tune in masoneialn 12300 series displacer type transmitter?

0 Answers  

---

what is the difference b/w wet leg & dry leg level method

2 Answers  

---

what is the use of impulse line in AFBC boiler , WHY WE CONNECT IMPULSE LINE TO TRANSMITTER , DRFT GAUGE ETC ????????

6 Answers   Jindal, Reliance,

---

Definition of reverse and acting controllers:

0 Answers   Monnet,

---