Interested to Buy Any Domain ? << Click Here >> for more details...
1. How many output signals do wew have in process control?
2. Could you write down the names of the pre-commissioning
and commissioning stage test instruments and explain them
(more than 5 items)?
3. What is the first step to commission a transmitter on
service?
4. What is RTD?
5. Find the output value in MA of a temperature transmitter
(RTD Type) at 120degree celius?
6. What is the O/P signal of a pneumatic transmitter?
7. What is the O/P signal of an elctronic transmitter?
8. What is the close loop and open loon?
- 4 Answers
- 10551 Views
- I also Faced
- E-Mail Answers
Answer Posted / kalla anil kumar,jeypore
1- it may analog and digital, or
2- lot of test instruments like pressure calibrator dead weght testor,(DRUCK),temperator calibrator DECODE BOX,temp bath,For control valve mA source,for vabration (vabolator) etc.
3- we have know the tag,location and application of transmitter,
4-RTD- Resistance temperature detector, it is used up -200 to 600 deg C,
5- first we should know transmitter Range, then we calculate mA, if the range is 120 then 0deg 4mA,30deg 8mA,60deg 12mA,90deg 16mA and 120Deg 20mA,
6- .2 to 1 kg/cm2 or 3 to 15psi
7- 0 to 20mA, 4 to 20mA
8- in a close loop PID control,transmitter, and final control element like control valve,on/off valve, and MOV etc, it will work on auto there will be set valve then controlling out put will come from PID-C, in open loop there will be no set point we have control by manual,
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
what is surge and how is it prevented, what is the purpose of bypass valve across AS valve.
wich is coming the first HAZOP OR SIL
What is Span Error
Gas equation
-/5A. What is the meaning and limitations of this in energy meter constant. It is a 3 phase LT Energy Meter. If this Energy Meter is connected through a CT of ratio 200/5 Amps, then what is the multiplying constant and how its will be calculated.
In most instances, Inertia processes are quite uncommon. Give an example of a combined Resistance and Capacitance situation.Describe an application, which according to your understanding of the subject matter, comprises of both Resistance and Capacitance effects.
I am having a Phoenix digital to modbus converter. The o/p of the same is connected to flow computer FB407. But the digital signals are updated only after one minute in the flow computer. what may be the cause of delay in communication? Flow computer is having a scanning period of less than 1 sec.
I need to know steps to Calibration Valve Guard......
we have level transmitter for h2s04 storage tank capacity 10k ,always there are failure of transmitter due to failure of magnetic floats ,please come up with solutions at the earliest.
Which products are available in the Mass Systemswitch and System Manager AC range?
How to Calibrate Radar Level Transmitter in Field
what is compensation? temprature & pressure
why we are using magnet for calibration of gas detector?
what is the difference between magnetic flow meter and mass flowmeter
How to work temperature gauge?
